Change Log

4.0.0 (2023-02-21)

Full Changelog

Features:

Allow value types without default constructor in Kokkos::View with Kokkos::WithoutInitializing #5307
parallel_scan with View as result type. #5146
Introduced SharedSpace, an alias for a MemorySpace that is accessible by every ExecutionSpace. The memory is moved and then accessed locally. #5289
Introduced SharedHostPinnedSpace, an alias for a MemorySpace that is accessible by every ExecutionSpace. The memory is pinned to the host and accessed via zero-copy access. #5405
Groundwork for MDSpan integration. #4973 and #5304
Introduced MD version of hierarchical parallelism: TeamThreadMDRange, ThreadVectorMDRange and TeamVectorMDRange. #5238

Backend and Architecture Enhancements:

CUDA:

Allow CUDA PTX forward compatibility #3612 #5536 #5527
Add support for NVIDIA Hopper GPU architecture #5538
Don't rely on synchronization behavior of default stream in CUDA and HIP #5391
Improve CUDA cache config settings #5706

HIP:

Move HIP, HIPSpace, HIPHostPinnedSpace, and HIPManagedSpace out of the Experimental namespace #5383
Don't rely on synchronization behavior of default stream in CUDA and HIP #5391
Export AMD architecture flag when using Trilinos #5528
Fix linking error (see OLCF issue) when using amdclang: #5539
Remove support for MI25 and added support for Navi 1030 #5522
Fix race condition when using HSA_XNACK=1 #5755
Add parameter to force using GlobalMemory launch mechanism. This can be used when encountering compiler bugs with ROCm 5.3 and 5.4 #5796

SYCL:

Delegate choice of workgroup size for parallel_reduce with RangePolicy to the compiler. #5227
SYCL RangePolicy: manually specify workgroup size through chunk size #4875

OpenMPTarget:

Select the right device #5492

OpenMP:

Add partition_space #5105

General Enhancements

Implement OffsetView constructor taking pairs and ViewCtorProp #5303
Promote math constants to Kokkos::numbers namespace #5434
Add overloads of hypot math function that take 3 arguments #5341
Add fma fused multiply-add math function #5428
Views using MemoryTraits::Atomic don't need volatile overloads for the value type anymore. #5455
Added is_team_handle trait #5375
Refactor desul atomics to support compiling CUDA with NVC++ #5431 #5497 #5498
Support finding libquadmath with native compiler support #5286
Add architecture flags for MSVC #5673
SIMD backend for ARM NEON #5829

Build System Changes

Let CMake determine OpenMP flags. #4105
Update minimum compiler versions. #5323
Makefile and CMake support for C++23 #5283
Do not add -cuda to the link line with NVHPC compiler when the CUDA backend is not actually enabled #5485
Only add -latomic in generated GNU makefiles when OpenMPTarget backend is enabled #5501 #5537 (3.7 patch release candidate)
Kokkos_ENABLE_CUDA_LAMBDA now ON by default with NVCC #5580
Fix enabling of relocatable device code when using CUDA as CMake language #5564
Fix cmake configuration with CUDA 12 #5691

Incompatibilities (i.e. breaking changes)

Require C++17 #5277
Turn setting Kokkos_CXX_STANDARD into an error #5293
Remove all deprecations in Kokkos 3 #5297
Remove KOKKOS_COMPILER_CUDA_VERSION #5430
Drop reciprocal_overflow_threshold numeric trait #5326
Move reduction_identity out of <Kokkos_NumericTraits.hpp> into a new <Kokkos_ReductionIdentity.hpp> header #5450
Reduction and scan routines will report an error if the join() operator they would use takes volatile-qualified parameters #5409
ENABLE_CUDA_UVM is dropped in favor of using SharedSpace as MemorySpace explicitly #5608
Remove Kokkos_ENABLE_CUDA_LDG_INTRINSIC option #5623
Don't rely on synchronization behavior of default stream in CUDA and HIP - this potentially will break unintended implicit synchronization with other libraries such as MPI #5391
Make ExecutionSpace::concurrency() a non-static member function #5655 and related PRs

Deprecations

Guard against non-public header inclusion #5178
Raise deprecation warnings if non empty WorkTag class is used #5230
Deprecate parallel_* overloads taking the label as trailing argument #5141
Deprecate nested types in functional #5185
Deprecate InitArguments struct and replace it with InitializationSettings #5135
Deprecate finalize_all() #5134
Deprecate command line arguments (other than --help) that are not prefixed with kokkos-* #5120
Deprecate --[kokkos-]numa cmdline arg and KOKKOS_NUMA env var #5117
Deprecate --[kokkos-]threads command line argument in favor of --[kokkos-]num-threads #5111
Deprecate Kokkos::is_reducer_type #4957
Deprecate OffsetView constructors taking index_list_type #4810
Deprecate overloads of Kokkos::sort taking a parameter bool always_use_kokkos_sort #5382
Deprecate CudaUVMSpace::available() which always returned true #5614
Deprecate volatile-qualified members from Kokkos::pair and Kokkos::complex #5412
Deprecate KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_* macros #5824 (oversight in 3.2)

Bug Fixes

Avoid allocating memory for UniqueToken #5300
Fix pragma ivdep in Kokkos_OpenMP_Parallel.hpp #5356
Fix configuring with Threads support when rerunning CMake #5486
Fix View assignment between LayoutLeft and LayoutRight with static extents #5535 (3.7 patch release candidate)
Add fence() calls to sorting routine overloads that don't take an execution space parameter #5389
ClockTic changed to 64 bit to fix overflow on Power #5577 (incl. in 3.7.01 patch release)
Fix incorrect offset in CUDA and HIP parallel_scan for < 4 byte types #5555 (3.7 patch release candidate)
Fix incorrect alignment behavior of scratch allocations in some corner cases (e.g. very small allocations) #5687 (3.7 patch release candidate)
Add missing ReductionIdentity<char> specialization #5798
Don't install standard algorithms headers multiple times #5670
Fix max scratch size calculation for level 0 scratch in CUDA and HIP #5718

3.7.01 (2022-12-01)

Full Changelog

Bug Fixes:

Add fences to all sorting routines not taking an execution space instance argument #5547
Fix repeated team_reduce without barrier #5552
Fix memory spaces in create_mirror_view overloads using view_alloc #5521
Allow as_view_of_rank_n() to be overloaded for "special" scalar types #5553
Fix warning calling a __host__ function from a __host__ __device__ from View:: as_view_of_rank_n #5591
OpenMPTarget: adding implementation to set device id. #5557
Use Kokkos::atomic_load to Correct Race Condition Giving Rise to Seg Faulting Error in OpenMP tests #5559
cmake: define KOKKOS_ARCH_A64FX #5561
Only link against libatomic in gnu-make OpenMPTarget build #5565
Fix static extents assignment for LayoutLeft/LayoutRight assignment #5566
Do not add -cuda to the link line with NVHPC compiler when the CUDA backend is not actually enabled #5569
Export the flags in KOKKOS_AMDGPU_OPTIONS when using Trilinos #5571
Add support for detecting MPI local rank with MPICH and PMI #5570 #5582
Remove listing of undefined TPL dependencies #5573
ClockTic changed to 64 bit to fix overflow on Power #5592
Fix incorrect offset in CUDA and HIP parallel scan for < 4 byte types #5607
Fix initialization of Cuda lock arrays #5622

3.7.00 (2022-08-22)

Full Changelog

Features:

Use non-volatile join() member functions and operator+= in parallel_reduce/scan #4931 #4954 #4951
Add SIMD sub package (requires C++17) #5016
Add is_finalized() #5247
Promote mathematical functions from namespace Kokkos::Experimental to namespace Kokkos #4791
Promote min, max, clamp, minmax functions from namespace Kokkos::Experimental to namespace Kokkos #5170
Add round, logb, nextafter, copysign, and signbit math functions #4768
Add HIPManagedSpace, similar to CudaUVMSpace #5112
Accept view construction allocation properties in create_mirror[_view,_view_and_copy] and resize/realloc #5125 #5095 #5035 #4805 #4844
Allow MemorySpace::allocate() to be called with execution space #4826
Experimental: Compile time view subscriber #4197

Backends and Archs Enhancements:

Add support for Sapphire Rapids Intel architecture #5015
Add support for ICX, SKL and ICL Intel architectures #5013 #4929
Add arch flags for Intel GPU Ponte Vecchio #4932
SYCL: require GPU if GPU architecture was set at configuration time (i.e. do not allow fallback to CPU device) #5264 #5222
SYCL: Add SYCL::sycl_queue() for interoperability #5241
SYCL: Loosen restriction for using built-in sycl::group_broadcast #4552
SYCL: preserve address space #4396
OpenMPTarget: Adding a workaound for team scan #5219
OpenMPTarget: Adding logic to skip the kernel launch if league_size=0 #5067
OpenMPTarget: Make sure Kokkos::abort() causes abnormal program termination when called on the host-side #4808
HIP: Make HIPHostPinnedSpace coarse-grained #5152
Refactor OpenMP parallel_for implementation to use more native OpenMP constructs #4664
Add option to optimize for local CPU architecture Kokkos_ARCH_NATIVE #4930

Implemented enhancements

Add command line argument/environment variable to print the configuration #5233
Improve error message in view memory access violations #4950
Remove unnecessary fences in View initialization #4823
Make View::shmem_size() device-callable #4936
Update numerics support for __float128 #5081
Add log10 overload for Kokkos::complex #5009
Add [[nodiscard]] to ScopeGuard #5224
Add structured binding support for Kokkos::Array #4962
Enable accessing Kokkos::Array elements in constant expressions #4916
Mark as_view_of_rank_n as KOKKOS_FUNCTION #5248
Cleanup/rework fence overloads #5148
Assert that Layout construction from extents is valid in functions taking integer extents #5209
Add fill_random overload that takes an execution space as first argument #5181
Avoid some unnecessary fences in parallel_reduce/scan #5154
Include KOKKOS_ENABLE_LIBDL in options when printing configuration #5086
DynRankView: make layout() return the same as a corresponding static View #5026
Use _mm_malloc for icpx #5012
Avoid forcing matching execution spaces in BinSort constructor and sort() #4919
Check number of bins in BinSort #4890
Improve performance in parallel STL-like algorithms #4887 #4886
Disable memset on A64FX and launch parallel_for instead (performance) #4884
Allow non-power-of-two team sizes for team reductions and scans #4809

Harmonization of Kokkos execution environment initialization:

Warn when unable to detect local MPI rank and user explicitly asked for it #5263
Refactor parsing of command line arguments and environment variables #5221
Refactor device selection at initialization #5211
Rename tools settings for consistency #5201
Print help only once #5128
Update precedence rule in initialization #5130
Warn instead of just ignoring user settings when kokkos-tools is disabled #5088
Drop numa args in threads backend initialization #5127
Warn users when a flag prefixed with -[-]kokkos is not recognized and do not remove it #5256
Give back to Core what belongs to Core (aka moving tune_internals option from Tools back to Core) #5202

Build system updates:

nvcc_wrapper: filter out -pedantic-errors from nvcc options #5235
nvcc_wrapper: add known nvcc option --source-in-ptx #5052
Link libdl as interface library #5179
Only show GPU architectures with enabled corresponding backend #5119
Enable optional external desul build #5021 #5132
Export Kokkos_CXX_STANDARD variable with CMake #5068
Suppress warnings with nvc++ #5031
Disallow multiple host architectures in CMake #4996
Do not include compiler warning flags in the compile option of the cmake target #4989
AOT flags for OpenMPTarget targeting Intel GPUs #4915
Repurpose Kokkos_ARCH_INTEL_GEN for SYCL to mean JIT to be conforming with OMPT #4894
Replace amdgpu-target with offload-arch #4874
Do not enable kokkos_launch_compiler when CMAKE_CXX_COMPILER_LAUNCHER is set #4870
Move CMake version check up #4797

Incompatibilities:

Remove KOKKOS_THREAD_LOCAL #5064
Remove KOKKOS_ENABLE_POSIX_MEMALIGN #5011
Remove unused KOKKOS_ENABLE_TM #4995
Remove unused cmakedefine KOKKOS_ENABLE_COMPILER_WARNINGS #4883
Remove unused KOKKOS_ENABLE_DUALVIEW_MODIFY_CHECK #4882
Drop Instruction Set Architecture (ISA) macros #4981
Warn in ScopeGuard about illegal usage #5250

Deprecations:

Guard against non-public header inclusion #5178
Raise deprecation warnings if non empty WorkTag class is used #5230
Deprecate parallel_* overloads taking the label as trailing argument #5141
Deprecate nested types in functional #5185
Deprecate InitArguments struct and replace it with InitializationSettings #5135
Deprecate finalize_all() #5134
Deprecate command line arguments (other than --help) that are not prefixed with kokkos-* #5120
Deprecate --[kokkos-]numa cmdline arg and KOKKOS_NUMA env var #5117
Deprecate --[kokkos-]threads command line argument in favor of --[kokkos-]num-threads #5111
Deprecate Kokkos::is_reducer_type #4957
Deprecate OffsetView constructors taking index_list_type #4810
Deprecate overloads of Kokkos::sort taking a parameter bool always_use_kokkos_sort #5382
Warn about parallel_reduce cases that call join() with volatile-qualified arguments #5215

Bug Fixes:

CUDA Reductions: Fix data races reported by Nvidia compute-sanitizer #4855
Work around Intel compiler bug #5301
Avoid allocating memory for UniqueToken #5300
DynamicView: Properly resize mirror instances after construction #5276
Remove Kokkos::Rank limit of 6 ranks #5271
Do not forget to set last element to nullptr when removing a flag in Kokkos::initialize #5272
Fix CUDA+MSVC build issue #5261
Fix DynamicView::resize_serial #5220
Fix cmake default compiler flags for unknown compiler #5217
Fix move_backward #5191
Fixing issue 5196 - missing symbol with intel compiler #5207
Preserve KOKKOS_INVALID_INDEX in ViewDimension and ArrayLayout construction #5188
Finalize deep_copy_space early avoiding printing to std::cerr for Cuda #5151
Use correct policy in Threads MDRange parallel_reduce #5123
Fix building with NVCC as the CXX compiler while the CUDA backend is not enabled #5115
OpenMPTarget Index range fix for MDRange. #5089
Fix bug with CUDA's team reduction for empty ranges #5079
Fix using ZeroMemset for Serial #5077
Fix Kokkos::Vector::push_back for default execution space #5047
ScatterView: Fix ScatterMin/ScatterMax to use proper atomics #5045
Fix calling ZeroMemset in deep_copy #5040
Make View self-assignment not produce double-free #5024
Guard against unrecognized pragma with intel compilers #5019
Fix racing condition in HIPParallelLaunch #5008
KokkosP: Fix device_id in profiling #4997
Fix for Kokkos::vector::insert into empty vector with begin and end iterators #4988
Fix Core header files installation #4984
Fix bounds errors with Kokkos::sort #4980
Fixup let RangePolicy::set_chunk_size return a reference to self #4918
Fix allocating large Views #4907
Fix combined reductions with Kokkos::View #4896
Fixed _CUDA_ARCH__ to __CUDA_ARCH__ for CUDA LDG #4893
Fixup View::access() truncate parameter pack #4876
Fix abort with HIP backend for ROCm 5.0.2 and beyond #4873
Fix HIP version when printing the configuration #4872
Fix scratch lock array when using scratch level 1 #4871
Fix Makefile.kokkos to work with fujitsu compiler #4867
cmake: Correct link THREADS link option #4854
UniqueToken impl_acquire function should be device only #4819
Fix example calls to non existing static print_configuration #4806
Fix requests for large team scratch sizes #4728

3.6.01 (2022-05-23)

Full Changelog

Bug Fixes:

Fix Threads: Fix serial resizing scratch space (3.6.01 cherry-pick) #5109
Fix ScatterMin/ScatterMax to use proper atomics (3.6.01 cherry-pick) #5046
Fix allocating large Views #4907
Fix bounds errors with Kokkos::sort #4980
Fix HIP version when printing the configuration #4872
Fixed _CUDA_ARCH__ to __CUDA_ARCH__ for CUDA LDG #4893
Fixed an incorrect struct initialization #5028
Fix racing condition in HIPParallelLaunch #5008
Avoid deprecation warnings with OpenMPExec::validate_partition #4982
Make View self-assignment not produce double-free #5024

3.6.00 (2022-02-18)

Full Changelog

Features:

Add C++ standard algorithms #4315
Implement fill_random for DynRankView #4763
Add bhalf_t #4543 #4653
Add mathematical constants #4519
Allow Kokkos::{create_mirror*,resize,realloc} to be used with WithoutInitializing #4486 #4337
Implement KOKKOS_IF_ON_{HOST,DEVICE} macros #4660
Allow setting the CMake language for Kokkos #4323

Perf bug fix

Desul: Add ScopeCaller #4690
Enable Desul atomics by default when using Makefiles #4606
Unique token improvement #4741 #4748

Other improvements:

Add math function long double overload on the host side #4712

Deprecations:

Array reductions with pointer return types #4756
Deprecate partition_master, validate_partition #4737
Deprecate Kokkos_ENABLE_PTHREAD in favor of Kokkos_ENABLE_THREADS #4619 ** pair with use std::threads **
Deprecate log2(unsigned) -> int (removing in next release) #4595
Deprecate Kokkos::Impl::is_view #4592
Deprecate KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_* macros and the ActiveExecutionMemorySpace alias #4668

Backends and Archs Enhancements:

SYCL:

Update required SYCL compiler version #4749
Cap vector size to kernel maximum for SYCL #4704
Improve check for compatibility of vector size and subgroup size in SYCL #4579
Provide chunk_size for SYCL #4635
Use host-pinned memory for SYCL kernel memory #4627
Use shuffle-based algorithm for scalar reduction #4608
Implement pool of USM IndirectKernelMemory #4596
Provide valid default team size for SYCL #4481

CUDA:

Add checks for shmem usage in parallel_reduce #4548

HIP:

Add support for fp16 in the HIP backend #4688
Disable multiple kernel instantiations when using HIP (configure with -DKokkos_ENABLE_HIP_MULTIPLE_KERNEL_INSTANTIATIONS=ON to use) #4644
Fix HIP scratch use per instance #4439
Change allocation header to 256B alignment for AMD VEGA architecture #4753
Add generic KOKKOS_ARCH_VEGA macro #4782
Require ROCm 4.5 #4689

HPX:

Adapt to HPX 1.7.0 which is now required #4241

OpenMP:

Fix thread deduction for OpenMP for thread_count==0 #4541

OpenMPTarget:

Update memory space size_type to improve performance (size_t -> unsigned) #4779

Other Improvements:

Improve NVHPC support #4599
Add Kokkos::Experimental::{min,max,minmax,clamp} #4629 #4506
Use device type as template argument in Containers and Algorithms #4724 #4675
Implement Kokkos::sort with execution space #4490
Kokkos::resize always error out for mismatch in runtime rank #4681
Print current call stack when calling Kokkos::abort() from the host #4672 #4671
Detect mismatch of execution spaces in functors #4655
Improve view label access on host #4647
Error out for const scalar return type in reduction #4645
Don't allow calling UnorderdMap::value_at for a set #4639
Add KOKKOS_COMPILER_NVHPC macro, disable quiet_NaN and signaling_NaN #4586
Improve performance of local_deep_copy #4511
Improve performance when sorting integers #4464
Add missing numeric traits (denorm_min, reciprocal_overflow_threshold, {quiet,silent}_NaN}) and make them work on cv-qualified types #4466 #4415 #4473 #4443

Implemented enhancements BuildSystem

Manually compute IntelLLVM compiler version for older CMake versions #4760
Add Xptxas without = to nvcc_wrapper #4646
Use external GoogleTest optionally #4563
Silent warnings about multiple optimization flags with nvcc_wrapper #4502
Use the same flags in Makefile.kokkos for POWER7/8/9 as for CMake #4483
Fix support for A64FX architecture #4745

Incompatibilities:

Drop KOKKOS_ARCH_HIP macro when using generated GNU makefiles #4786
Remove gcc-toolchain auto add for clang in Makefile.kokkos #4762

Bug Fixes:

Lock constant memory in Cuda/HIP kernel launch with a mutex (thread safety) #4525
Fix overflow for large requested scratch allocation #4551
Fix Windows build in mingw #4564
Fix kokkos_launch_compiler: escape $ character #4769 #4703
Fix math functions with NVCC and GCC 5 as host compiler #4733
Fix shared build with Intel19 #4725
Do not install empty desul/src/ directory #4714
Fix wrong device_id computation in identifier_from_devid (Profiling Interface) #4694
Fix a bug in CUDA scratch memory pool (abnormally high memory consumption) #4673
Remove eval of command args in hpcbind #4630
SYCL fix to run when no GPU is detected #4623
Fix layout_strides::span for rank-0 views #4605
Fix SYCL atomics for local memory #4585
Hotfix mdrange_large_deep_copy for SYCL #4581
Fix bug when sorting integer using the HIP backend #4570
Fix compilation error when using HIP with RDC #4553
DynamicView: Fix deallocation extent #4533
SYCL fix running parallel_reduce with TeamPolicy for large ranges #4532
Fix bash syntax error in nvcc_wrapper #4524
OpenMPTarget team_policy reduce fixes for init/join reductions #4521
Avoid hangs in the Threads backend #4499
OpenMPTarget fix reduction bug in parallel_reduce for TeamPolicy #4491
HIP fix scratch space per instance #4439
OpenMPTarget fix team scratch allocation #4431

3.5.00 (2021-10-19)

Full Changelog

Features:

Add support for quad-precision math functions/traits #4098
Adding ExecutionSpace partitioning function #4096
Improve Python Interop Capabilities #4065
Add half_t Kokkos::rand specialization #3922
Add math special functions: erf, erfcx, expint1, Bessel functions, Hankel functions #3920
Add missing common mathematical functions #4043 #4036 #4034
Let the numeric traits be SFINAE-friendly #4038
Add Desul atomics - enabling memory-order and memory-scope parameters #3247
Add detection idiom from the C++ standard library extension version 2 #3980
Fence Profiling Support in all backends #3966 #4304 #4258 #4232
Significant SYCL enhancements (see below)

Deprecations:

Deprecate CUDA_SAFE_CALL and HIP_SAFE_CALL #4249
Deprecate Kokkos::Impl::Timer (Kokkos::Timer has been available for a long time) #4201
Deprecate Experimental::MasterLock #4094
Deprecate Kokkos_TaskPolicy.hpp (headers got reorganized, doesn't remove functionality) #4011
Deprecate backward compatibility features #3978
Update and deprecate is_space::host_memory/execution/mirror_space #3973

Backends and Archs Enhancements:

Enabling constbitset constructors in kernels #4296
Use ZeroMemset in View constructor to improve performance #4226
Use memset in deep_copy #3944
Add missing fence() calls in resize(View) that effectively do deep_copy(resized, orig) #4212
Avoid allocations in resize and realloc #4207
StaticCsrGraph: use device type instead of execution space to construct views #3991
Consider std::sort when view is accessible from host #3929
Fix CPP20 warnings except for volatile #4312

SYCL:

Introduce SYCLHostUSMSpace #4268
Implement SYCL TeamPolicy for vector_size > 1 #4183
Enable 64bit ranges for SYCL #4211
Don't print SYCL device info in execution space intialization #4168
Improve SYCL MDRangePolicy performance #4161
Use sub_groups in SYCL parallel_scan #4147
Implement subgroup reduction for SYCL RangePolicy parallel_reduce #3940
Use DPC++ broadcast extension in SYCL team_broadcast #4103
Only fence in SYCL parallel_reduce for non-device-accessible result_ptr #4089
Improve fencing behavior in SYCL backend #4088
Fence all registered SYCL queues before deallocating memory #4086
Implement SYCL::print_configuration #3992
Reuse scratch memory in parallel_scan and TeamPolicy (decreases memory footprint) #3899 #3889

CUDA:

Cuda improve heuristic for blocksize #4271
Don't use [[deprecated]] for nvcc #4229
Improve error message for NVHPC as host compiler #4227
Update support for cuda reductions to work with types < 4bytes #4156
Fix incompatible team size deduction in rare cases parallel_reduce #4142
Remove UVM usage in DynamicView #4129
Remove dependency between core and containers #4114
Adding opt-in CudaMallocSync support when using CUDA version >= 11.2 #4026 #4233
Fix a potential race condition in the CUDA backend #3999

HIP:

Implement new blocksize deduction method for HIP Backend #3953
Add multiple LaunchMechanism #3820
Make HIP backend thread-safe #4170

Serial:

Refactor Serial backend and fix thread-safety issue #4053

OpenMPTarget:

OpenMPTarget: support array reductions in RangePolicy #4040
OpenMPTarget: add MDRange parallel_reduce #4032
OpenMPTarget: Fix bug in for the case of a reducer. #4044
OpenMPTarget: verify process fix #4041

Implemented enhancements BuildSystem

Important BuildSystem Updates:

Use hipcc architecture autodetection when Kokkos_ARCH is not set #3941
Introduce Kokkos_ENABLE_DEPRECATION_WARNINGS and remove deprecated code with Kokkos_ENABLE_DEPRECATED_CODE_3 #4106 #3855

Other Improvements:

Add allow-unsupported-compiler flag to nvcc-wrapper #4298
nvcc_wrapper: fix errors in argument handling #3993
Adds support for -time= and -time in nvcc_wrapper #4015
nvcc_wrapper: suppress duplicates of GPU architecture and RDC flags #3968
Fix TMPDIR support in nvcc_wrapper #3792
NVHPC: update PGI compiler arch flags #4133
Replace PGI with NVHPC (works for both) #4196
Make sure that KOKKOS_CXX_HOST_COMPILER_ID is defined #4235
Add options to Makefile builds for deprecated code and warnings #4215
Use KOKKOS_CXX_HOST_COMPILER_ID for identifying CPU arch flags #4199
Added support for Cray Clang to Makefile.kokkos #4176
Add XLClang as compiler #4120
Keep quoted compiler flags when passing to Trilinos #3987
Add support for AMD Zen3 CPU architecture #3972
Rename IntelClang to IntelLLVM #3945
Add cppcoreguidelines-pro-type-cstyle-cast to clang-tidy #3522
Add sve bit size definition for A64FX #3947 #3946
Remove KOKKOS_ENABLE_DEBUG_PRINT_KERNEL_NAMES #4150

Other Changes:

Tool Enhancements:

Retrieve original value from a point in a MultidimensionalSparseTuningProblem #3977
Allow extension of built-in tuners with additional tuning axes #3961
Added a categorical tuner #3955

Miscellaneous:

hpcbind: Use double quotes around $@ when invoking user command #4284
Add file and line to error message #3985
Fix compiler warnings when compiling with nvc++ #4198
Add OpenMPTarget CI build on AMD GPUs #4055
CI: icpx is now part of intel container #4002

Incompatibilities:

Remove pre CUDA 9 KOKKOS_IMPL_CUDA_* macros #4138

Bug Fixes:

UnorderedMap::clear() should zero the size() #4130
Add memory fence for HostSharedPtr::cleanup() #4144
SYCL: Fix race conditions in TeamPolicy::parallel_reduce #4418
Adding missing memory fence to serial exec space fence. #4292
Fix using external SYCL queues in tests #4291
Fix digits10 bug #4281
Fixes constexpr errors with frounding-math on gcc < 10. #4278
Fix compiler flags for PGI/NVHPC #4264
Fix Zen2/3 also implying Zen Arch with Makefiles #4260
Kokkos_Cuda.hpp: Fix shadow warning with cuda/11.0 #4252
Fix issue w/ static initialization of function attributes #4242
Disable long double hypot test on Power systems #4221
Fix false sharing in random pool #4218
Fix a missing memory_fence for debug shared alloc code #4216
Fix two xl issues #4179
Makefile.kokkos: fix (standard_in) 1: syntax error #4173
Fixes for query_device example #4172
Fix a bug when using HIP atomic with Kokkos::Complex #4159
Fix mistaken logic in pthread creation #4157
Define KOKKOS_ENABLE_AGGRESSIVE_VECTORIZATION when requesting Kokkos_ENABLE_AGGRESSIVE_VECTORIZATION=ON #4107
Fix compilation with latest MSVC version #4102
Fix incorrect macro definitions when compiling with Intel compiler on Windows #4087
Fixup global buffer overflow in hand rolled string manipulation #4070
Fixup heap buffer overflow in cmd line args parsing unit tests #4069
Only add quotes in compiler flags for Trilinos if necessary #4067
Fixed invocation of tools init callbacks #4061
Work around SYCL JIT compiler issues with static variables #4013
Fix TestDetectionIdiom.cpp test inclusion for Trilinos/TriBITS #4010
Fixup allocation headers with OpenMPTarget backend #4003
Add missing specialization for OMPT to Kokkos Random #3967
Disable hypot long double test on power arches #3962
Use different EBO workaround for MSVC (rebased) #3924
Fix SYCL Kokkos::Profiling::(de)allocateData calls #3928

3.4.01 (2021-05-19)

Full Changelog

Bug Fixes:

Windows: Remove atomic_compare_exchange_strong overload conflicts with Windows #4024
OpenMPTarget: Fixup allocation headers with OpenMPTarget backend #4020
OpenMPTarget: Add missing specailization for OMPT to Kokkos Random #4022
AMD: Add support for AMD Zen3 CPU architecture #4021
SYCL: Implement SYCL::print_configuration #4012
Containers: staticcsrgraph: use device type instead of execution space to construct views #3998
nvcc_wrapper: fix errors in argument handling, suppress duplicates of GPU architecture and RDC flags #4006
CI: Add icpx testing to intel container #4004
CMake/TRIBITS: Keep quoted compiler flags when passing to Trilinos #4007
CMake: Rename IntelClang to IntelLLVM #3945

3.4.00 (2021-04-25)

Full Changelog

Highlights:

SYCL Backend Almost Feature Complete
OpenMPTarget Backend Almost Feature Complete
Performance Improvements for HIP backend
Require CMake 3.16 or newer
Tool Callback Interface Enhancements
cmath wrapper functions available now in Kokkos::Experimental

Features:

Implement parallel_scan with ThreadVectorRange and Reducer #3861
Implement SYCL Random #3849
OpenMPTarget: Adding Implementation for nested reducers #3845
Implement UniqueToken for SYCL #3833
OpenMPTarget: UniqueToken::Global implementation #3823
DualView sync's on ExecutionSpaces #3822
SYCL outer TeamPolicy parallel_reduce #3818
SYCL TeamPolicy::team_scan #3815
SYCL MDRangePolicy parallel_reduce #3801
Enable use of execution space instances in ScatterView #3786
SYCL TeamPolicy nested parallel_reduce #3783
OpenMPTarget: MDRange with TagType for parallel_for #3781
Adding OpenMPTarget parallel_scan #3655
SYCL basic TeamPolicy #3654
OpenMPTarget: scratch memory implementation #3611

Implemented enhancements Backends and Archs:

SYCL choose a specific GPU #3918
[HIP] Lock access to scratch memory when using Teams #3916
[HIP] fix multithreaded access to get_next_driver #3908
Forward declare HIPHostPinnedSpace and SYCLSharedUSMSpace #3902
Let SYCL USMObjectMem use SharedAllocationRecord #3898
Implement clock_tic for SYCL #3893
Don't use a static variable in HIPInternal::scratch_space #3866(kokkos#3866)
Reuse memory for SYCL parallel_reduce #3873
Update SYCL compiler in CI #3826
Introduce HostSharedPtr to manage m_space_instance for Cuda/HIP/SYCL #3824
[HIP] Use shuffle for range reduction #3811
OpenMPTarget: Changes to the hierarchical parallelism #3808
Remove ExtendedReferenceWrapper for SYCL parallel_reduce #3802
Eliminate sycl_indirect_launch #3777
OpenMPTarget: scratch implementation for parallel_reduce #3776
Allow initializing SYCL execution space from sycl::queue and SYCL::impl_static_fence #3767
SYCL TeamPolicy scratch memory alternative #3763
Alternative implementation for SYCL TeamPolicy #3759
Unify handling of synchronous errors in SYCL #3754
core/Cuda: Half_t updates for cgsolve #3746
Unify HIPParallelLaunch structures #3733
Improve performance for SYCL parallel_reduce #3732
Use consistent types in Kokkos_OpenMPTarget_Parallel.hpp #3703
Implement non-blocking kernel launches for HIP backend #3697
Change SYCLInternal::m_queue std::unique_ptr -> std::optional #3677
Use alternative SYCL parallel_reduce implementation #3671
Use runtime values in KokkosExp_MDRangePolicy.hpp #3626
Clean up AnalyzePolicy #3564
Changes for indirect launch of SYCL parallel reduce #3511

Implemented enhancements BuildSystem:

Also require C++14 when building gtest #3912
Fix compiling SYCL with OpenMP #3874
Require C++17 for SYCL (at configuration time) #3869
Add COMPILE_DEFINITIONS argument to kokkos_create_imported_tpl #3862
Do not pass arch flags to the linker with no rdc #3846
Try compiling C++14 check with C++14 support and print error message #3843
Enable HIP with Cray Clang #3842
Add an option to disable header self containment tests #3834
CMake check for C++14 #3809
Prefer -std=* over --std=* #3779
Kokkos launch compiler updates #3778
Updated comments and enabled no-op for kokkos_launch_compiler #3774
Apple's Clang not correctly recognised #3772
kokkos_launch_compiler + CUDA auto-detect arch #3770
Add Spack test support for Kokkos #3753
Split SYCL tests for aot compilation #3741
Use consistent OpenMP flag for IntelClang #3735
Add support for -Wno-deprecated-gpu-targets #3722
Add configuration to target CUDA compute capability 8.6 #3713
Added VERSION and SOVERSION to KOKKOS_INTERNAL_ADD_LIBRARY #3706
Add fast-math to known NVCC flags #3699
Add MI-100 arch string #3698
Require CMake >=3.16 #3679
KokkosCI.cmake, KokkosCTest.cmake.in, CTestConfig.cmake.in + CI updates #2844

Implemented enhancements Tools:

Improve readability of the callback invocation in profiling #3860
V1.1 Tools Interface: incremental, action-based #3812
Enable launch latency simulations #3721
Added metadata callback to tools interface #3711
MDRange Tile Size Tuning #3688
Added support for command-line args for kokkos-tools #3627
Query max tile sizes for an MDRangePolicy, and set tile sizes on an existing policy #3481

Implemented enhancements Other:

Try detecting ndevices in get_gpu #3921
Use strcmp to compare names() #3909
Add execution space arguments for constructor overloads that might allocate a new underlying View #3904
Prefix labels in internal use of kokkos_malloc #3891
Prefix labels for internal uses of SharedAllocationRecord #3890
Add missing hypot math function #3880
Unify algorithm unit tests to avoid code duplication #3851
DualView.template view() better matches for Devices in UVMSpace cases #3857
More extensive disentangling of Policy Traits #3829
Replaced nanosleep and sched_yield with STL routines #3825
Constructing Atomic Subviews #3810
Metadata Declaration in Core #3729
Allow using tagged final functor in parallel_reduce #3714
Major duplicate code removal in SharedAllocationRecord specializations #3658

Fixed bugs:

Provide forward declarations in Kokkos_ViewLayoutTiled.hpp for XL #3911
Fixup absolute value of floating points in Kokkos complex #3882
Address intel 17 ICE #3881
Add missing pow(Kokkos::complex) overloads #3868
Fix bug {pow, log}(Kokkos::complex) #3866(kokkos#3866)
Cleanup writing to output streams in Cuda #3859
Fixup cache CUDA fallback execution space instance used by DualView::sync #3856
Fix cmake warning with pthread #3854
Fix typo FOUND_CUDA_{DRIVVER -> DRIVER} #3852
Fix bug in SYCL team_reduce #3848
Atrocious bug in MDRange tuning #3803
Fix compiling SYCL with Kokkos_ENABLE_TUNING=ON #3800
Fixed command line parsing bug #3797
Workaround race condition in SYCL parallel_reduce #3782
Fix Atomic{Min,Max} for Kepler30 #3780
Fix SYCL typo #3755
Fixed Kokkos_install_additional_files macro #3752
Fix a typo for Kokkos_ARCH_A64FX #3751
OpenMPTarget: fixes and workarounds to work with "Release" build type #3748
Fix parsing bug for number of devices command line argument #3724
Avoid more warnings with clang and C++20 #3719
Fix gcc-10.1 C++20 warnings #3718
Fix cuda cache config not being set correct #3712
Fix dualview deepcopy perftools #3701
use drand instead of frand in drand #3696

Incompatibilities:

Remove unimplemented member functions of SYCLDevice #3919
Replace cl::sycl #3896
Get rid of SYCL workaround in Kokkos_Complex.hpp #3884
Replace most uses of if_c #3883
Remove Impl::enable_if_type #3863
Remove HostBarrier test #3847
Avoid (void) interface #3836
Remove VerifyExecutionCanAccessMemorySpace #3813
Avoid duplicated code in ScratchMemorySpace #3793
Remove superfluous FunctorFinal specialization #3788
Rename cl::sycl -> sycl in Kokkos_MathematicalFunctions.hpp #3678
Remove integer_sequence backward compatibility implementation #3533

Enabled tests:

Fixup re-enable core performance tests #3903
Enable more SYCL tests #3900
Restrict MDRange Policy tests for Intel GPUs #3853
Disable death tests for rawhide #3844
OpenMPTarget: Block unit tests that do not pass with the nvidia compiler #3839
Enable Bitset container test for SYCL #3830
Enable some more SYCL tests #3744
Enable SYCL atomic tests #3742
Enable more SYCL perf_tests #3692
Enable examples for SYCL #3691

3.3.01 (2021-01-06)

Full Changelog

Bug Fixes:

Fix severe performance bug in DualView which added memcpys for sync and modify #3693
Fix performance bug in CUDA backend, where the cuda Cache config was not set correct.

3.3.00 (2020-12-16)

Full Changelog

Features:

Require C++14 as minimum C++ standard. C++17 and C++20 are supported too.
HIP backend is nearly feature complete. Kokkos Dynamic Task Graphs are missing.
Major update for OpenMPTarget: many capabilities now work. For details contact us.
Added DPC++/SYCL backend: primary capabilites are working.
Added Kokkos Graph API analogous to CUDA Graphs.
Added parallel_scan support with TeamThreadRange #3536
Added Logical Memory Spaces #3546
Added initial half precision support #3439
Experimental feature: control cuda occupancy #3379

Implemented enhancements Backends and Archs:

Add a64fx and fujitsu Compiler support #3614
Adding support for AMD gfx908 archictecture #3375
SYCL parallel_for MDRangePolicy #3583
SYCL add parallel_scan #3577
SYCL custom reductions #3544
SYCL Enable container unit tests #3550
SYCL feature level 5 #3480
SYCL Feature level 4 (parallel_for) #3474
SYCL feature level 3 #3451
SYCL feature level 2 #3447
OpenMPTarget: Hierarchial reduction for + operator on scalars #3504
OpenMPTarget hierarchical #3411
HIP Add Impl::atomic_[store,load] #3440
HIP enable global lock arrays #3418
HIP Implement multiple occupancy paths for various HIP kernel launchers #3366

Implemented enhancements Policies:

MDRangePolicy: Let it be semiregular #3494
MDRangePolicy: Check narrowing conversion in construction #3527
MDRangePolicy: CombinedReducers support #3395
Kokkos Graph: Interface and Default Implementation #3362
Kokkos Graph: add Cuda Graph implementation #3369
TeamPolicy: implemented autotuning of team sizes and vector lengths #3206
RangePolicy: Initialize all data members in default constructor #3509

Implemented enhancements BuildSystem:

Auto-generate core test files for all backends #3488
Avoid rewriting test files when calling cmake #3548
RULE_LAUNCH_COMPILE and RULE_LAUNCH_LINK system for nvcc_wrapper #3136
Adding -include as a known argument to nvcc_wrapper #3434
Install hpcbind script #3402
cmake/kokkos_tribits.cmake: add parsing for args #3457

Implemented enhancements Tools:

Changed namespacing of Kokkos::Tools::Impl::Impl::tune_policy #3455
Delegate to an impl allocate/deallocate method to allow specifying a SpaceHandle for MemorySpaces #3530
Use the Kokkos Profiling interface rather than the Impl interface #3518
Runtime option for tuning #3459
Dual View Tool Events #3326

Implemented enhancements Other:

Abort on errors instead of just printing #3528
Enable C++14 macros unconditionally #3449
Make ViewMapping trivially copyable #3436
Rename struct ViewMapping to class #3435
Replace enums in Kokkos_ViewMapping.hpp (removes -Wextra) #3422
Use bool for enums representing bools #3416
Fence active instead of default execution space instances #3388
Refactor parallel_reduce fence usage #3359
Moved Space EBO helpers to Kokkos_EBO #3357
Add remove_cvref type trait #3340
Adding identity type traits and update definition of identity_t alias #3339
Add is_specialization_of type trait #3338
Make ScratchMemorySpace semi-regular #3309
Optimize min/max atomics with early exit on no-op case #3265
Refactor Backend Development #2941

Fixed bugs:

Fixup MDRangePolicy construction from Kokkos arrays #3591
Add atomic functions for unsigned long long using gcc built-in #3588
Fixup silent pointless comparison with zero in checked_narrow_cast (compiler workaround) #3566
Fixes for ROCm 3.9 #3565
Fix windows build issues which crept in for the CUDA build #3532
HIP Fix atomics of large data types and clean up lock arrays #3529
Pthreads fix exception resulting from 0 grain size #3510
Fixup do not require atomic operation to be default constructible #3503
Fix race condition in HIP backend #3467
Replace KOKKOS_DEBUG with KOKKOS_ENABLE_DEBUG #3458
Fix multi-stream team scratch space definition for HIP #3398
HIP fix template deduction #3393
Fix compiling with HIP and C++17 #3390
Fix sigFPE in HIP blocksize deduction #3378
Type alias change: replace CS with CTS to avoid conflicts with NVSHMEM #3348
Clang compilation of CUDA backend on Windows #3345
Fix HBW support #3343
Added missing fences to unique token #3260

Incompatibilities:

Remove unused utilities (forward, move, and expand_variadic) from Kokkos::Impl #3535
Remove unused traits #3534
HIP: Remove old HCC code #3301
Prepare for deprecation of ViewAllocateWithoutInitializing #3264
Remove ROCm backend #3148

3.2.01 (2020-11-17)

Full Changelog

Fixed bugs:

Disallow KOKKOS_ENABLE_CUDA_RELOCATABLE_DEVICE_CODE in shared library builds #3332
Do not install libprinter-tool when testing is enabled #3313
Fix restrict/alignment following refactor #3373
- Intel fix: workaround compiler issue with using statement #3383
Fix zero-length reductions #\3364
- Pthread zero-length reduction fix #3452
- HPX zero-length reduction fix #3470
- cuda/9.2 zero-length reduction fix #3580
Fix multi-stream scratch #\3269
Guard KOKKOS_ALL_COMPILE_OPTIONS if Cuda is not enabled #3387
Do not include link flags for Fortran linkage #3384
Fix NVIDIA GPU arch macro with autodetection #3473
Fix libdl/test issues with Trilinos #3543
- Register Pthread as Tribits option to be enabled with Trilinos #3558

Implemented enhancements:

Separate Cuda timing-based tests into their own executable #3407

3.2.00 (2020-08-19)

Full Changelog

Implemented enhancements:

HIP:Enable stream in HIP #3163
HIP:Add support for shuffle reduction for the HIP backend #3154
HIP:Add implementations of missing HIPHostPinnedSpace methods for LAMMPS #3137
HIP:Require HIP 3.5.0 or higher #3099
HIP:WorkGraphPolicy for HIP #3096
OpenMPTarget: Significant update to the new experimental backend. Requires C++17, works on Intel GPUs, reference counting fixes. #3169
Windows Cuda support #3018
Pass -Wext-lambda-captures-this to NVCC when support for __host__ __device__ lambda is enabled from CUDA 11 #3241
Use explicit staging buffer for constant memory kernel launches and cleanup host/device synchronization #3234
Various fixup to policies including making TeamPolicy default constructible and making RangePolicy and TeamPolicy assignable: #3202 , #3203 , #3196
Annotations for DefaultExectutionSpace and DefaultHostExectutionSpace to use in static analysis #3189
Add documentation on using Spack to install Kokkos and developing packages that depend on Kokkos #3187
Add OpenMPTarget backend flags for NVC++ compiler #3185
Move deep_copy/create_mirror_view on Experimental::OffsetView into Kokkos:: namespace #3166
Allow for larger block size in HIP #3165
View: Added names of Views to the different View initialize/free kernels #3159
Cuda: Caching cudaFunctorAttributes and whether L1/Shmem prefer was set #3151
BuildSystem: Improved performance in default configuration by defaulting to Release build #3131
Cuda: Update CUDA occupancy calculation #3124
Vector: Adding data() to Vector #3123
BuildSystem: Add CUDA Ampere configuration support #3122
General: Apply [[noreturn]] to Kokkos::abort when applicable #3106
TeamPolicy: Validate storage level argument passed to TeamPolicy::set_scratch_size() #3098
BuildSystem: Make kokkos_has_string() function in Makefile.kokkos case insensitive #3091
Modify KOKKOS_FUNCTION macro for clang-tidy analysis #3087
Move allocation profiling to allocate/deallocate calls #3084
BuildSystem: FATAL_ERROR when attempting in-source build #3082
Change enums in ScatterView to types #3076
HIP: Changes for new compiler/runtime #3067
Extract and use get_gpu #3061 , #3048
Add is_allocated to View-like containers #3059
Combined reducers for scalar references #3052
Add configurable capacity for UniqueToken #3051
Add installation testing #3034
HIP: Add UniqueToken #3020
Autodetect number of devices #3013

Fixed bugs:

Check error code from cudaStreamSynchronize in CUDA fences #3255
Fix issue with C++ standard flags when using nvcc\_wrapper with PGI #3254
Add missing threadfence in lock-based atomics #3208
Fix dedup of linker flags for shared lib on CMake <=3.12 #3176
Fix memory leak with CUDA streams #3170
BuildSystem: Fix OpenMP Target flags for Cray #3161
ScatterView: fix for OpenmpTarget remove inheritance from reducers #3162
BuildSystem: Set OpenMP flags according to host compiler #3127
OpenMP: Fix logic for nested omp in partition_master bug #3101
nvcc_wrapper: send --cudart to nvcc instead of host compiler #3092
BuildSystem: Fixes for Cuda/11 and c++17 #3085
HIP: Fix print_configuration #3080
Conditionally define get_gpu #3072
Fix bounds for ranges in random number generator #3069
Fix Cuda minor arch check #3035
BuildSystem: Add -expt-relaxed-constexpr flag to nvcc_wrapper #3021

Incompatibilities:

Remove ETI support #3157
Remove KOKKOS_INTERNAL_ENABLE_NON_CUDA_BACKEND #3147
Remove core/unit_test/config #3146
Removed the preprocessor branch for KOKKOS_ENABLE_PROFILING #3115
Disable profiling with MSVC #3066

Closed issues:

Silent error (Validate storage level arg to set_scratch_size) #3097
Remove KOKKKOS_ENABLE_PROFILING Option #3095
Cuda 11 -> allow C++17 #3083
In source build failure not explained #3081
Allow naming of Views for initialization kernel #3070
DefaultInit tests failing when using CTest resource allocation feature #3040
Add installation testing. #3037
nvcc_wrapper needs to handle -expt-relaxed-constexpr flag #3017
CPU core oversubscription warning on macOS with OpenMP backend #2996
Default behavior of KOKKOS_NUM_DEVICES to use all devices available #2975
Assert blocksize > 0 #2974
Add ability to assign kokkos profile function from executable #2973
ScatterView Support for the pre/post increment operator #2967
Compiler issue: Cuda build with clang 10 has errors with the atomic unit tests #3237
Incompatibility of flags for C++ standard with PGI v20.4 on Power9/NVIDIA V100 system #3252
Error configuring as subproject #3140
CMake fails with Nvidia compilers when the GPU architecture option is not supplied (Fix configure with OMPT and Cuda) #3207
PGI compiler being passed the gcc -fopenmp flag #3125
Cuda: Memory leak when using CUDA stream #3167
RangePolicy has an implicitly deleted assignment operator #3192
MemorySpace::allocate needs to have memory pool counting. #3064
Missing write fence for lock based atomics on CUDA #3038
CUDA compute capability version check problem #3026
Make DynRankView fencing consistent #3014
nvcc_wrapper cant handle -Xcompiler -o out.o #2993
Reductions of non-trivial types of size 4 fail in CUDA shfl operations #2990
complex_double misalignment in reduce, clang+CUDA #2989
Span of degenerated (zero-length) subviews is not zero in some special cases #2979
Rank 1 custom layouts dont work as expected. #2840

3.1.01 (2020-04-14)

Full Changelog

Fixed bugs:

Fix complex_double misalignment in reduce, clang+CUDA #2989
Fix compilation fails when profiling disabled and CUDA enabled #3001
Fix cuda reduction of non-trivial scalars of size 4 #2990
Configure and install version file when building in Trilinos #2957
Fix OpenMPTarget build missing include and namespace #3000
fix typo in KOKKOS_SET_EXE_PROPERTY() #2959
Fix non-zero span subviews of zero sized subviews #2979

3.1.00 (2020-04-14)

Full Changelog

Features:

HIP Support for AMD
OpenMPTarget Support with clang
Windows VS19 (Serial) Support #1533

Implemented enhancements:

generate_makefile.bash should allow tests to be disabled #2886
clang/7+cuda/9 build -Werror-unused parameter error in nightly test #2884
ScatterView memory space is not user settable #2826
clang/8+cuda/10.0 build error with c++17 #2809
warnings.... #2805
Kokkos version in cpp define #2787
Remove Defunct QThreads Backend #2751
Improve Kokkos::fence behavior with multiple execution spaces #2659
polylithic(?) initialization of Kokkos #2658
Unnecessary(?) check for host execution space initialization from Cuda initialization #2652
Kokkos error reporting failures with CUDA GPUs in exclusive mode #2471
atomicMax equivalent (and other atomics) #2401
Fix alignment for Kokkos::complex #2255
Warnings with Cuda 10.1 #2206
dual view with Kokkos::ViewAllocateWithoutInitializing #2188
Check error code from cudaOccupancyMaxActiveBlocksPerMultiprocessor #2172
Add non-member Kokkos::resize/realloc for DualView #2170
Construct DualView without initialization #2046
Expose is_assignable to determine if one view can be assigned to another #1936
profiling label #1935
team_broadcast of bool failed on CUDA backend #1908
View static_extent #660
Misleading Kokkos::Cuda::initialize ERROR message when compiled for wrong GPU architecture #1944
Cryptic Error When Malloc Fails #2164
Drop support for intermediate standards in CMake #2336

Fixed bugs:

DualView sync_device with length zero creates cuda errors #2946
building with nvcc and clang (or clang based XL) as host compiler: "Kokkos::atomic_fetch_min(volatile int *, int)" has already been defined #2903
Cuda 9.1,10.1 debug builds failing due to -Werror=unused-parameter #2880
clang -Werror: Kokkos_FixedBufferMemoryPool.hpp:140:28: error: unused parameter 'alloc_size' #2869
intel/16.0.1, intel/17.0.1 nightly build failures with debugging enabled #2867
intel/16.0.1 debug build errors #2863
xl/16.1.1 with cpp14, openmp build, nightly test failures #2856
Intel nightly test failures: team_vector #2852
Kokkos Views with intmax/2<N<intmax can hang during construction #2850
workgraph_fib test seg-faults with threads backend and hwloc #2797
cuda.view_64bit test hangs on Power8+Kepler37 system - develop and 2.9.00 branches #2771
device_type for Kokkos_Random ? #2693
"More than one tag given" error in Experimental::require() #2608
Segfault on Marvell from our finalization stack #2542

3.0.00 (2020-01-27)

Full Changelog

Implemented enhancements:

BuildSystem: Standalone Modern CMake Support #2104
StyleFormat: ClangFormat Style #2157
Documentation: Document build system and CMake philosophy #2263
BuildSystem: Add Alias with Namespace Kokkos:: to Interal Libraries #2530
BuildSystem: Universal Kokkos find_package #2099
BuildSystem: Dropping support for Kokkos_{DEVICES,OPTIONS,ARCH} in CMake #2329
BuildSystem: Set Kokkos_DEVICES and Kokkos_ARCH variables in exported CMake configuration #2193
BuildSystem: Drop support for CUDA 7 and CUDA 8 #2489
BuildSystem: Drop CMake option SEPARATE_TESTS #2266
BuildSystem: Support expt-relaxed-constexpr same as expt-extended-lambda #2411
BuildSystem: Add Xnvlink to command line options allowed in nvcc_wrapper #2197
BuildSystem: Install Kokkos config files and target files to lib/cmake/Kokkos #2162
BuildSystem: nvcc_wrappers and c++ 14 #2035
BuildSystem: Kokkos version major/version minor (Feature request) #1930
BuildSystem: CMake namespaces (and other modern cmake cleanup) #1924
BuildSystem: Remove capability to install Kokkos via GNU Makefiles #2332
Documentation: Remove PDF ProgrammingGuide in Kokkos replace with link #2244
View: Add Method to Resize View without Initialization #2048
Vector: implement “insert” method for Kokkos_Vector (as a serial function on host) #2437

Fixed bugs:

ParallelScan: Kokkos::parallel\scan fix race condition seen in inter-block fence #2681
OffsetView: Kokkos::OffsetView missing constructor which takes pointer #2247
OffsetView: Kokkos::OffsetView: allow offset=0 #2246
DeepCopy: Missing DeepCopy instrumentation in Kokkos #2522
nvcc_wrapper: --host-only fails with multiple -W* flags #2484
nvcc_wrapper: taking first -std option is counterintuitive #2553
Subview: Error taking subviews of views with static_extents of min rank #2448
TeamPolicy: reducers with valuetypes without += broken on CUDA #2410
Libs: Fix inconsistency of Kokkos library names in Kokkos and Trilinos #1902
Complex: operator>> for complex<T> uses std::ostream, not std::istream #2313
Macros: Restrict not honored for non-intel compilers #1922

2.9.00 (2019-06-24)

Full Changelog

Implemented enhancements:

Capability: CUDA Streams #1723
Capability: CUDA Stream support for parallel_reduce #2061
Capability: Feature Request: TeamVectorRange #713
Capability: Adding HPX backend #2080
Capability: TaskScheduler to have multiple queues #565
Capability: Support for additional reductions in ScatterView #1674
Capability: Request: deep_copy within parallel regions #689
Capability: Feature Request: create\_mirror\_view\_without\_initializing #1765
View: Use SFINAE to restrict possible View type conversions #2127
Deprecation: Deprecate ExecutionSpace::fence() as static function and make it non-static #2140
Deprecation: Deprecate LayoutTileLeft #2122
Macros: KOKKOS_RESTRICT defined for non-Intel compilers #2038

Fixed bugs:

Cuda: TeamThreadRange loop count on device is passed by reference to host static constexpr #1733
Cuda: Build error with relocatable device code with CUDA 10.1 GCC 7.3 #2134
Cuda: cudaFuncSetCacheConfig is setting CachePreferShared too often #2066
Cuda: TeamPolicy doesn't throw then created with non-viable vector length and also doesn't backscale to viable one #2020
Cuda: cudaMemcpy error for large league sizes on V100 #1991
Cuda: illegal warp sync in parallel_reduce by functor on Turing 75 #1958
TeamThreadRange: Inconsistent results from TeamThreadRange reduction #1905
Atomics: atomic_fetch_oper & atomic_oper_fetch don't build for complex<float> #1964
Views: Kokkos randomread Views leak memory #2155
ScatterView: LayoutLeft overload currently non-functional #2165
KNL: With intel 17.2.174 illegal instruction in random number test #2078
Bitset: Enable copy constructor on device #2094
Examples: do not compile due to template deduction error (multi_fem) #1928

2.8.00 (2019-02-05)

Full Changelog

Implemented enhancements:

Capability, Tests: C++14 support and testing #1914
Capability: Add environment variables for all command line arguments #1798
Capability: --kokkos-ndevices not working for Slurm #1920
View: Undefined behavior when deep copying from and to an empty unmanaged view #1967
BuildSystem: nvcc_wrapper should stop immediately if nvcc is not in PATH #1861

Fixed bugs:

Cuda: Fix Volta Issues 1 Non-deterministic behavior on Volta, runs fine on Pascal #1949
Cuda: Fix Volta Issues 2 CUDA Team Scan gives wrong values on Volta with -G compile flag #1942
Cuda: illegal warp sync in parallel_reduce by functor on Turing 75 #1958
Threads: Pthreads backend does not handle RangePolicy with offset correctly #1976
Atomics: atomic_fetch_oper has no case for Kokkos::complex<double> or other 16-byte types #1951
MDRangePolicy: Fix zero-length range #1948
TeamThreadRange: TeamThreadRange MaxLoc reduce doesnt compile #1909

2.7.24 (2018-11-04)

Full Changelog

Implemented enhancements:

DualView: Add non-templated functions for sync, need_sync, view, modify #1858
DualView: Avoid needlessly allocates and initializes modify_host and modify_device flag views #1831
DualView: Incorrect deduction of "not device type" #1659
BuildSystem: Add KOKKOS_ENABLE_CXX14 and KOKKOS_ENABLE_CXX17 #1602
BuildSystem: Installed kokkos_generated_settings.cmake contains build directories instead of install directories #1838
BuildSystem: KOKKOS_ARCH: add ticks to printout of improper arch setting #1649
BuildSystem: Make core/src/Makefile for Cuda use needed nvcc_wrapper #1296
Build: Support PGI as host compiler for NVCC #1828
Build: Many Warnings Fixed e.g.#1786
Capability: OffsetView with non-zero begin index #567
Capability: Reductions into device side view #1788
Capability: Add max_size to Kokkos::Array #1760
Capability: View Assignment: LayoutStride -> LayoutLeft and LayoutStride -> LayoutRight #1594
Capability: Atomic function allow implicit conversion of update argument #1571
Capability: Add team_size_max with tagged functors #663
Capability: Fix allignment of views from Kokkos_ScratchSpace should use different alignment #1700
Capabilitiy: create_mirror_view_and_copy for DynRankView #1651
Capability: DeepCopy HBWSpace / HostSpace #548
ROCm: support team vector scan #1645
ROCm: Merge from rocm-hackathon2 #1636
ROCm: Add ParallelScanWithTotal #1611
ROCm: Implement MDRange in ROCm #1314
ROCm: Implement Reducers for Nested Parallelism Levels #963
ROCm: Add asynchronous deep copy #959
Tests: Memory pool test seems to allocate 8GB #1830
Tests: Add unit_test for team_broadcast #734

Fixed bugs:

BuildSystem: Makefile.kokkos gets gcc-toolchain wrong if gcc is cached #1841
BuildSystem: kokkos_generated_settings.cmake placement is inconsistent #1771
BuildSystem: Invalid escape sequence . in kokkos_functions.cmake #1661
BuildSystem: Problem in Kokkos generated cmake file #1770
BuildSystem: invalid file names on windows #1671
Tests: reducers min/max_loc test fails randomly due to multiple min values and thus multiple valid locations #1681
Tests: cuda.scatterview unit test causes "Bus error" when force_uvm and enable_lambda are enabled #1852
Tests: cuda.cxx11 unit test fails when force_uvm and enable_lambda are enabled #1850
Tests: threads.reduce_device_view_range_policy failing with Cuda/8.0.44 and RDC #1836
Build: compile error when compiling Kokkos with hwloc 2.0.1 (on OSX 10.12.6, with g++ 7.2.0) #1506
Build: dual_view.view broken with UVM #1834
Build: White cuda/9.2 + gcc/7.2 warnings triggering errors #1833
Build: warning: enum constant in boolean context #1813
Capability: Fix overly conservative max_team_size thingy #1808
DynRankView: Ctors taking ViewAllocateWithoutInitializing broken #1783
Cuda: Apollo cuda.team_broadcast test fail with clang-6.0 #1762
Cuda: Clang spurious test failure in impl_view_accessible #1753
Cuda: Kokkos::complex<double> atomic deadlocks with Clang 6 Cuda build with -O0 #1752
Cuda: LayoutStride Test fails for UVM as default memory space #1688
Cuda: Scan wrong values on Volta #1676
Cuda: Kokkos::deep_copy error with CudaUVM and Kokkos::Serial spaces #1652
Cuda: cudaErrorInvalidConfiguration with debug build #1647
Cuda: parallel_for with TeamPolicy::team_size_recommended with launch bounds not working -- reported by Daniel Holladay #1283
Cuda: Using KOKKOS_CLASS_LAMBDA in a class with Kokkos::Random_XorShift64_Pool member data #1696
Long Build Times on Darwin #1721
Capability: Typo in Kokkos_Sort.hpp - BinOp3D - wrong comparison #1720
Buffer overflow in SharedAllocationRecord in Kokkos_HostSpace.cpp #1673
Serial unit test failure #1632

2.7.00 (2018-05-24)

Full Changelog

Part of the Kokkos C++ Performance Portability Programming EcoSystem 2.7

Implemented enhancements:

Deprecate team_size auto adjusting to maximal value possible #1618
DynamicView - remove restrictions to std::is_trivial types and value_type is power of two #1586
Kokkos::StaticCrsGraph does not propagate memory traits (e.g., Unmanaged) #1581
Adding ETI for DeepCopy / ViewFill etc. #1578
Deprecate all the left over KOKKOS_HAVE_ Macros and Kokkos_OldMacros.hpp #1572
Error if Kokkos_ARCH set in CMake #1555
Deprecate ExecSpace::initialize / ExecSpace::finalize #1532
New API for TeamPolicy property setting #1531
clang 6.0 + cuda debug out-of-memory test failure #1521
Cuda UniqueToken interface not consistent with other backends #1505
Move Reducers out of Experimental namespace #1494
Provide scope guard for initialize/finalize #1479
Check Kokkos::is_initialized in SharedAllocationRecord dtor #1465
Remove static list of allocations #1464
Makefiles: Support single compile/link line use case #1402
ThreadVectorRange with a range #1400
Exclusive scan + last value API #1358
Install kokkos_generated_settings.cmake #1348
Kokkos arrays (not views!) don't do bounds checking in debug mode #1342
Expose round-robin GPU assignment outside of initialize(int, char**) #1318
DynamicView misses use_count and label function #1298
View constructor should check arguments #1286
False Positive on Oversubscription Warning #1207
Allow (require) execution space for 1st arg of VerifyExecutionCanAccessMemorySpace #1192
ROCm: Add ROCmHostPinnedSpace #958
power of two functions #656
CUDA 8 has 64bit __shfl #361
Add TriBITS/CMake configure information about node types #243

Fixed bugs:

CUDA atomic_fetch_sub for doubles is hitting CAS instead of intrinsic #1624
Bug: use of ballot on Volta #1612
Kokkos::deep_copy memory access failures #1583
g++ -std option doubly set for cmake project #1548
ViewFill for 1D Views of larger 32bit entries fails #1541
CUDA Volta another warpsync bug #1520
triple_nested_parallelism fails with KOKKOS_DEBUG and CUDA #1513
Jenkins errors in Kokkos_SharedAlloc.cpp with debug build #1511
Kokkos::Sort out-of-bounds with empty bins #1504
Get rid of deprecated functions inside Kokkos #1484
get_work_partition casts int64_t to int, causing a seg fault #1481
NVCC bug with __device__ on defaulted function #1470
CMake example broken with CUDA backend #1468

2.6.00 (2018-03-07)

Full Changelog

Part of the Kokkos C++ Performance Portability Programming EcoSystem 2.6

Implemented enhancements:

Support NVIDIA Volta microarchitecture #1466
Kokkos - Define empty functions when profiling disabled #1424
Don't use __constant__ cache for lock arrays, enable once per run update instead of once per call #1385
task dag enhancement. #1354
Cuda task team collectives and stack size #1353
Replace View operator acceptance of more than rank integers with 'access' function #1333
Interoperability: Do not shut down backend execution space runtimes upon calling finalize. #1305
shmem_size for LayoutStride #1291
Kokkos::resize performs poorly on 1D Views #1270
stride() is inconsistent with dimension(), extent(), etc. #1214
Kokkos::sort defaults to std::sort on host #1208
DynamicView with host size grow #1206
Unmanaged View with Anonymous Memory Space #1175
Sort subset of Kokkos::DynamicView #1160
MDRange policy doesn't support lambda reductions #1054
Add ability to set hook on Kokkos::finalize #714
Atomics with Serial Backend - Default should be Disable? #549
KOKKOS_ENABLE_DEPRECATED_CODE #1359

Fixed bugs:

cuda_internal_maximum_warp_count returns 8, but I believe it should return 16 for P100 #1269
Cuda: level 1 scratch memory bug (reported by Stan Moore) #1434
MDRangePolicy Reduction requires value_type typedef in Functor #1379
Kokkos DeepCopy between empty views fails #1369
Several issues with new CMake build infrastructure (reported by Eric Phipps) #1365
deep_copy between rank-1 host/device views of differing layouts without UVM no longer works (reported by Eric Phipps) #1363
Profiling can't be disabled in CMake, and a parallel_for is missing for tasks (reported by Kyungjoo Kim) #1349
get_work_partition int overflow (reported by berryj5) #1327
Kokkos::deep_copy must fence even if the two views are the same #1303
CudaUVMSpace::allocate/deallocate must fence #1302
ViewResize on CUDA fails in Debug because of too many resources requested #1299
Cuda 9 and intrepid2 calls from Panzer. #1183
Slowdown due to tracking_enabled() in 2.04.00 (found by Albany app) #1016
Bounds checking fails with zero-span Views (reported by Stan Moore) #1411

2.5.00 (2017-12-15)

Full Changelog

Part of the Kokkos C++ Performance Portability Programming EcoSystem 2.5

Implemented enhancements:

Provide Makefile.kokkos logic for CMake and TriBITS #878
Add Scatter View #825
Drop gcc 4.7 and intel 14 from supported compiler list #603
Enable construction of unmanaged view using common_view_alloc_prop #1170
Unused Function Warning with XL #1267
Add memory pool parameter check #1218
CUDA9: Fix warning for unsupported long double #1189
CUDA9: fix warning on defaulted function marking #1188
CUDA9: fix warnings for deprecated warp level functions #1187
Add CUDA 9.0 nightly testing #1174
{OMPI,MPICH}_CXX hack breaks nvcc_wrapper use case #1166
KOKKOS_HAVE_CUDA_LAMBDA became KOKKOS_CUDA_USE_LAMBDA #1274

Fixed bugs:

MinMax Reducer with tagged operator doesn't compile #1251
Reducers for Tagged operators give wrong answer #1250
Kokkos not Compatible with Big Endian Machines? #1235
Parallel Scan hangs forever on BG/Q #1234
Threads backend doesn't compile with Clang on OS X #1232
$(shell date) needs quote #1264
Unqualified parallel_for call conflicts with user-defined parallel_for #1219
KokkosAlgorithms: CMake issue in unit tests #1212
Intel 18 Error: "simd pragma has been deprecated" #1210
Memory leak in Kokkos::initialize #1194
CUDA9: compiler error with static assert template arguments #1190
Kokkos::Serial::is_initialized returns always true #1184
Triple nested parallelism still fails on bowman #1093
OpenMP openmp.range on Develop Runs Forever on POWER7+ with RHEL7 and GCC4.8.5 #995
Rendezvous performance at global scope #985

2.04.11 (2017-10-28)

Full Changelog

Implemented enhancements:

Add Subview pattern. #648
Add Kokkos "global" is_initialized #1060
Add create_mirror_view_and_copy #1161
Add KokkosConcepts SpaceAccessibility function #1092
Option to Disable Initialize Warnings #1142
Mature task-DAG capability #320
Promote Work DAG from experimental #1126
Implement new WorkGraph push/pop #1108
Kokkos_ENABLE_Cuda_Lambda should default ON #1101
Add multidimensional parallel for example and improve unit test #1064
Fix ROCm: Performance tests not building #1038
Make KOKKOS_ALIGN_SIZE a configure-time option #1004
Make alignment consistent #809
Improve subview construction on Cuda backend #615

Fixed bugs:

Kokkos::vector fixes for application #1134
DynamicView non-power of two value_type #1177
Memory pool bug #1154
Cuda launch bounds performance regression bug #1140
Significant performance regression in LAMMPS after updating Kokkos #1139
CUDA compile error #1128
MDRangePolicy neg idx test failure in debug mode #1113
subview construction on Cuda backend #615

2.04.04 (2017-09-11)

Full Changelog

Implemented enhancements:

OpenMP partition: set number of threads on nested level #1082
Add StaticCrsGraph row() method #1071
Enhance Kokkos complex operator overloading #1052
Tell Trilinos packages about host+device lambda #1019
Function markup for defaulted class members #952
Add deterministic random number generator #857

Fixed bugs:

Fix reduction_identity<T>::max for floating point numbers #1048
Fix MD iteration policy ignores lower bound on GPUs #1041
(Experimental) HBWSpace Linking issues in KokkosKernels #1094
(Experimental) ROCm: algorithms/unit_tests test_sort failing with segfault #1070

2.04.00 (2017-08-16)

Full Changelog

Implemented enhancements:

Added ROCm backend to support AMD GPUs
Kokkos::complex<T> behaves slightly differently from std::complex<T> #1011
Kokkos::Experimental::Crs constructor arguments were in the wrong order #992
Work graph construction ease-of-use (one lambda for count and fill) #991
when_all returns pointer of futures (improved interface) #990
Allow assignment of LayoutLeft to LayoutRight or vice versa for rank-0 Views #594
Changed the meaning of Kokkos_ENABLE_CXX11_DISPATCH_LAMBDA #1035

Fixed bugs:

memory pool default constructor does not properly set member variables. #1007

2.03.13 (2017-07-27)

Full Changelog

Implemented enhancements:

Disallow enabling both OpenMP and Threads in the same executable #406
Make Kokkos::OpenMP respect OMP environment even if hwloc is available #630
Improve Atomics Performance on KNL/Broadwell where PREFETCHW/RFO is Available #898
Kokkos::resize should test whether dimensions have changed before resizing #904
Develop performance-regression/acceptance tests #737
Make the deep_copy Profiling hook a start/end system #890
Add deep_copy Profiling hook #843
Append tag name to parallel construct name for Profiling #842
Add view label to View bounds error message for CUDA backend #870
Disable printing the loaded profiling library #824
"Declared but never referenced" warnings #853
Warnings about lock_address_cuda_space #852
WorkGraph execution policy #771
Simplify makefiles by guarding compilation with appropriate KOKKOS_ENABLE_### macros #716
Cmake build: wrong include install directory #668
Derived View type and allocation #566
Fix Compiler warnings when compiling core unit tests for Cuda #214

Fixed bugs:

Out-of-bounds read in Kokkos_Layout.hpp #975
CudaClang: Fix failing test with Clang 4.0 #941
Respawn when memory pool allocation fails (not available memory) #940
Memory pool aborts on zero allocation request, returns NULL for < minimum #939
Error with TaskScheduler query of underlying memory pool #917
Profiling::*Callee static variables declared in header #863
calling *Space::name() causes compile error #862
bug in Profiling::deallocateData #860
task_depend test failing, CUDA 8.0 + Pascal + RDC #829
[develop branch] Standalone cmake issues #826
Kokkos CUDA failes to compile with OMPI_CXX and MPICH_CXX wrappers #776
Task Team reduction on Pascal #767
CUDA stack overflow with TaskDAG test #758
TeamVector test on Cuda #670
Clang 4.0 Cuda Build broken again #560

2.03.05 (2017-05-27)

Full Changelog

Implemented enhancements:

Harmonize Custom Reductions over nesting levels #802
Prevent users directly including KokkosCore_config.h #815
DualView aborts on concurrent host/device modify (in debug mode) #814
Abort when running on a NVIDIA CC5.0 or higher architecture with code compiled for CC < 5.0 #813
Add "name" function to ExecSpaces #806
Allow null Future in task spawn dependences #795
Add Unit Tests for Kokkos::complex #785
Add pow function for Kokkos::complex #784
Square root of a complex #729
Command line processing of --threads argument prevents users from having any commandline arguments starting with --threads #760
Protected deprecated API with appropriate macro #756
Allow task scheduler memory pool to be used by tasks #747
View bounds checking on host-side performance: constructing a std::string #723
Add check for AppleClang as compiler distinct from check for Clang. #705
Uninclude source files for specific configurations to prevent link warning. #701
Add --small option to snapshot script #697
CMake Standalone Support #674
CMake build unit test and install #808
CMake: Fix having kokkos as a subdirectory in a pure cmake project #629
Tribits macro assumes build directory is in top level source directory #654
Use bin/nvcc_wrapper, not config/nvcc_wrapper #562
Allow MemoryPool::allocate() to be called from multiple threads per warp. #487
Allow MemoryPool::allocate to be called from multiple threads per warp. #487
Move OpenMP 4.5 OpenMPTarget backend into Develop #456
Testing on ARM testbed #288

Fixed bugs:

Fix label in OpenMP parallel_reduce verify_initialized #834
TeamScratch Level 1 on Cuda hangs #820
[bug] memory pool. #786
Some Reduction Tests fail on Intel 18 with aggressive vectorization on #774
Error copying dynamic view on copy of memory pool #773
CUDA stack overflow with TaskDAG test #758
ThreadVectorRange Customized Reduction Bug #739
set_scratch_size overflows #726
Get wrong results for compiler checks in Makefile on OS X. #706
Fix check if multiple host architectures enabled. #702
Threads Backend Does not Pass on Cray Compilers #609
Rare bug in memory pool where allocation can finish on superblock in empty state #452
LDFLAGS in core/unit_test/Makefile: potential "undefined reference" to pthread lib #148

2.03.00 (2017-04-25)

Full Changelog

Implemented enhancements:

UnorderedMap: make it accept Devices or MemorySpaces #711
sort to accept DynamicView and [begin,end) indices #691
ENABLE Macros should only be used via #ifdef or #if defined #675
Remove impl/Kokkos_Synchronic_* #666
Turning off IVDEP for Intel 14. #638
Using an installed Kokkos in a target application using CMake #633
Create Kokkos Bill of Materials #632
MDRangePolicy and tagged evaluators #547
Add PGI support #289

Fixed bugs:

Output from PerTeam fails #733
Cuda: architecture flag not added to link line #688
Getting large chunks of memory for a thread team in a universal way #664
Kokkos RNG normal() function hangs for small seed value #655
Kokkos Tests Errors on Shepard/HSW Builds #644

2.02.15 (2017-02-10)

Full Changelog

Implemented enhancements:

Containers: Adding block partitioning to StaticCrsGraph #625
Kokkos Make System can induce Errors on Cray Volta System #610
OpenMP: error out if KOKKOS_HAVE_OPENMP is defined but not _OPENMP #605
CMake: fix standalone build with tests #604
Change README (that GitHub shows when opening Kokkos project page) to tell users how to submit PRs #597
Add correctness testing for all operators of Atomic View #420
Allow assignment of Views with compatible memory spaces #290
Build only one version of Kokkos library for tests #213
Clean out old KOKKOS_HAVE_CXX11 macros clauses #156
Harmonize Macro names #150

Fixed bugs:

Cray and PGI: Kokkos_Parallel_Reduce #634
Kokkos Make System can induce Errors on Cray Volta System #610
Normal() function random number generator doesn't give the expected distribution #592

2.02.07 (2016-12-16)

Full Changelog

Implemented enhancements:

Add CMake option to enable Cuda Lambda support #589
Add CMake option to enable Cuda RDC support #588
Add Initial Intel Sky Lake Xeon-HPC Compiler Support to Kokkos Make System #584
Building Tutorial Examples #582
Internal way for using ThreadVectorRange without TeamHandle #574
Testing: Add testing for uvm and rdc #571
Profiling: Add Memory Tracing and Region Markers #557
nvcc_wrapper not installed with Kokkos built with CUDA through CMake #543
Improve DynRankView debug check #541
Benchmarks: Add Gather benchmark #536
Testing: add spot_check option to test_all_sandia #535
Deprecate Kokkos::Impl::VerifyExecutionCanAccessMemorySpace #527
Add AtomicAdd support for 64bit float for Pascal #522
Add Restrict and Aligned memory trait #517
Kokkos Tests are Not Run using Compiler Optimization #501
Add support for clang 3.7 w/ openmp backend #393
Provide an error throw class #79

Fixed bugs:

Cuda UVM Allocation test broken with UVM as default space #586
Bug (develop branch only): multiple tests are now failing when forcing uvm usage. #570
Error in generate_makefile.sh for Kokkos when Compiler is Empty String/Fails #568
XL 13.1.4 incorrect C++11 flag #553
Improve DynRankView debug check #541
Installing Library on MAC broken due to cp -u #539
Intel Nightly Testing with Debug enabled fails #534

2.02.01 (2016-11-01)

Full Changelog

Implemented enhancements:

Add Changelog generation to our process. #506

Fixed bugs:

Test scratch_request fails in Serial with Debug enabled #520
Bug In BoundsCheck for DynRankView #516

2.02.00 (2016-10-30)

Full Changelog

Implemented enhancements:

Add PowerPC assembly for grabbing clock register in memory pool #511
Add GCC 6.x support #508
Test install and build against installed library #498
Makefile.kokkos adds expt-extended-lambda to cuda build with clang #490
Add top-level makefile option to just test kokkos-core unit-test #485
Split and harmonize Object Files of Core UnitTests to increase build parallelism #484
LayoutLeft to LayoutLeft subview for 3D and 4D views #473
Add official Cuda 8.0 support #468
Allow C++1Z Flag for Class Lambda capture #465
Add Clang 4.0+ compilation of Cuda code #455
Possible Issue with Intel 17.0.098 and GCC 6.1.0 in Develop Branch #445
Add name of view to "View bounds error" #432
Move Sort Binning Operators into Kokkos namespace #421
TaskPolicy - generate error when attempt to use uninitialized #396
Import WithoutInitializing and AllowPadding into Kokkos namespace #325
TeamThreadRange requires begin, end to be the same type #305
CudaUVMSpace should track # allocations, due to CUDA limit on # UVM allocations #300
Remove old View and its infrastructure #259

Fixed bugs:

Bug in TestCuda_Other.cpp: most likely assembly inserted into Device code #515
Cuda Compute Capability check of GPU is outdated #509
multi_scratch test with hwloc and pthreads seg-faults. #504
generate_makefile.bash: "make install" is broken #503
make clean in Out of Source Build/Tests Does Not Work Correctly #502
Makefiles for test and examples have issues in Cuda when CXX is not explicitly specified #497
Dispatch lambda test directly inside GTEST macro doesn't work with nvcc #491
UnitTests with HWLOC enabled fail if run with mpirun bound to a single core #489
Failing Reducer Test on Mac with Pthreads #479
make test Dumps Error with Clang Not Found #471
OpenMP TeamPolicy member broadcast not using correct volatile shared variable #424
TaskPolicy - generate error when attempt to use uninitialized #396
New task policy implementation is pulling in old experimental code. #372
MemoryPool unit test hangs on Power8 with GCC 6.1.0 #298

2.01.10 (2016-09-27)

Full Changelog

Implemented enhancements:

Enable Profiling by default in Tribits build #438
parallel_reduce(0), parallel_scan(0) unit tests #436
data()==NULL after realloc with LayoutStride #351
Fix tutorials to track new Kokkos::View #323
Rename team policy set_scratch_size. #195

Fixed bugs:

Possible Issue with Intel 17.0.098 and GCC 6.1.0 in Develop Branch #445
Makefile spits syntax error #435
Kokkos::sort fails for view with all the same values #422
Generic Reducers: can't accept inline constructed reducer #404
data==NULL after realloc with LayoutStride #351
const subview of const view with compile time dimensions on Cuda backend #310
Kokkos (in Trilinos) Causes Internal Compiler Error on CUDA 8.0.21-EA on POWER8 #307
Core Oversubscription Detection Broken? #159

2.01.06 (2016-09-02)

Full Changelog

Implemented enhancements:

Add "standard" reducers for lambda-supportable customized reduce #411
TaskPolicy - single thread back-end execution #390
Kokkos master clone tag #387
Query memory requirements from task policy #378
Output order of test_atomic.cpp is confusing #373
Missing testing for atomics #341
Feature request for Kokkos to provide Kokkos::atomic_fetch_max and atomic_fetch_min #336
TaskPolicy<Cuda> performance requires teams mapped to warps #218

Fixed bugs:

Reduce with Teams broken for custom initialize #407
Failing Kokkos build on Debian #402
Failing Tests on NVIDIA Pascal GPUs #398
Algorithms: fill_random assumes dimensions fit in unsigned int #389
Kokkos::subview with RandomAccess Memory Trait #385
Build warning (signed / unsigned comparison) in Cuda implementation #365
wrong results for a parallel_reduce with CUDA8 / Maxwell50 #352
Hierarchical parallelism - 3 level unit test #344
Can I allocate a View w/ both WithoutInitializing & AllowPadding? #324
subview View layout determination #309
Unit tests with Cuda - Maxwell #196

2.01.00 (2016-07-21)

Full Changelog

Implemented enhancements:

Edit ViewMapping so assigning Views with the same custom layout compiles when const casting #327
DynRankView: Performance improvement for operator() #321
Interoperability between static and dynamic rank views #295
subview member function ? #280
Inter-operatibility between View and DynRankView. #245
(Trilinos) build warning in atomic_assign, with Kokkos::complex #177
View<>::shmem_size should runtime check for number of arguments equal to rank #176
Custom reduction join via lambda argument #99
DynRankView with 0 dimensions passed in at construction #293
Inject view_alloc and friends into Kokkos namespace #292
Less restrictive TeamPolicy reduction on Cuda #286
deep_copy using remap with source execution space #267
Suggestion: Enable opt-in L1 caching via nvcc-wrapper #261
More flexible create_mirror functions #260
Rename View::memory_span to View::required_allocation_size #256
Use of subviews and views with compile-time dimensions #237
Use of subviews and views with compile-time dimensions #237
Kokkos::Timer #234
Fence CudaUVMSpace allocations #230
View::operator() accept std::is_integral and std::is_enum #227
Allocating zero size View #216
Thread scalable memory pool #212
Add a way to disable memory leak output #194
Kokkos exec space init should init Kokkos profiling #192
Runtime rank wrapper for View #189
Profiling Interface #158
Fix View assignment (of managed to unmanaged) #153
Add unit test for assignment of managed View to unmanaged View #152
Check for oversubscription of threads with MPI in Kokkos::initialize #149
Dynamic resizeable 1dimensional view #143
Develop TaskPolicy for CUDA #142
New View : Test Compilation Downstream #138
New View Implementation #135
Add variant of subview that lets users add traits #134
NVCC-WRAPPER: Add --host-only flag #121
Address gtest issue with TriBITS Kokkos build outside of Trilinos #117
Make tests pass with -expt-extended-lambda on CUDA #108
Dynamic scheduling for parallel_for and parallel_reduce #106
Runtime or compile time error when reduce functor's join is not properly specified as const member function or with volatile arguments #105
Error out when the number of threads is modified after kokkos is initialized #104
Porting to POWER and remove assumption of X86 default #103
Dynamic scheduling option for RangePolicy #100
SharedMemory Support for Lambdas #81
Recommended TeamSize for Lambdas #80
Add Aggressive Vectorization Compilation mode #72
Dynamic scheduling team execution policy #53
UVM allocations in multi-GPU systems #50
Synchronic in Kokkos::Impl #44
index and dimension types in for loops #28
Subview assign of 1D Strided with stride 1 to LayoutLeft/Right #1

Fixed bugs:

misspelled variable name in Kokkos_Atomic_Fetch + missing unit tests #340
seg fault Kokkos::Impl::CudaInternal::print_configuration #338
Clang compiler error with named parallel_reduce, tags, and TeamPolicy. #335
Shared Memory Allocation Error at parallel_reduce #311
DynRankView: Fix resize and realloc #303
Scratch memory and dynamic scheduling #279
MemoryPool infinite loop when out of memory #312
Kokkos DynRankView changes break Sacado and Panzer #299
MemoryPool fails to compile on non-cuda non-x86 #297
Random Number Generator Fix #296
View template parameter ordering Bug #282
Serial task policy broken. #281
deep_copy with LayoutStride should not memcpy #262
DualView::need_sync should be a const method #248
Arbitrary-sized atomics on GPUs broken; loop forever #238
boolean reduction value_type changes answer #225
Custom init() function for parallel_reduce with array value_type #210
unit_test Makefile is Broken - Recursively Calls itself until Machine Apocalypse. #202
nvcc_wrapper Does Not Support -Xcompiler <compiler option> #198
Kokkos exec space init should init Kokkos profiling #192
Kokkos Threads Backend impl_shared_alloc Broken on Intel 16.1 (Shepard Haswell) #186
pthread back end hangs if used uninitialized #182
parallel_reduce of size 0, not calling init/join #175
Bug in Threads with OpenMP enabled #173
KokkosExp_SharedAlloc, m_team_work_index inaccessible #166
128-bit CAS without Assembly Broken? #161
fatal error: Cuda/Kokkos_Cuda_abort.hpp: No such file or directory #157
Power8: Fix OpenMP backend #139
Data race in Kokkos OpenMP initialization #131
parallel_launch_local_memory and cuda 7.5 #125
Resize can fail with Cuda due to asynchronous dispatch #119
Qthread taskpolicy initialization bug. #92
Windows: sys/mman.h #89
Windows: atomic_fetch_sub() #88
Windows: snprintf #87
Parallel_Reduce with TeamPolicy and league size of 0 returns garbage #85
Throw with Cuda when using (2D) team_policy parallel_reduce with less than a warp size #76
Scalar views don't work with Kokkos::Atomic memory trait #69
Reduce the number of threads per team for Cuda #63
Named Kernels fail for reductions with CUDA #60
Kokkos View dimension_() for long returning unsigned int #20
atomic test hangs with LLVM #6
OpenMP Test should set omp_set_num_threads to 1 #4

Closed issues:

develop branch broken with CUDA 8 and --expt-extended-lambda #354
--arch=KNL with Intel 2016 build failure #349
Error building with Cuda when passing -DKOKKOS_CUDA_USE_LAMBDA to generate_makefile.bash #343
Can I safely use int indices in a 2-D View with capacity > 2B? #318
Kokkos::ViewAllocateWithoutInitializing is not working #317
Intel build on Mac OS X #277
deleted #271
Broken Mira build #268
32-bit build #246
parallel_reduce with RDC crashes linker #232
build of Kokkos_Sparse_MV_impl_spmv_Serial.cpp.o fails if you use nvcc and have cuda disabled #209
Kokkos Serial execution space is not tested with TeamPolicy. #207
Unit test failure on Hansen KokkosCore_UnitTest_Cuda_MPI_1 #200
nvcc compiler warning: calling a __host__ function from a __host__ __device__ function is not allowed #180
Intel 15 build error with defaulted "move" operators #171
missing libkokkos.a during Trilinos 12.4.2 build, yet other libkokkos*.a libs are there #165
Tie atomic updates to execution space or even to thread team? (speculation) #144
New View: Compiletime/size Test #137
New View : Performance Test #136
Signed/unsigned comparison warning in CUDA parallel #130
Kokkos::complex: Need op* w/ std::complex & real #126
Use uintptr_t for casting pointers #110
Default thread mapping behavior between P and Q threads. #91
Windows: Atomic_Fetch_Exchange() return type #90
Synchronic unit test is way too long #84
nvcc_wrapper -> $(NVCC_WRAPPER) #42
Check compiler version and print helpful message #39
Kokkos shared memory on Cuda uses a lot of registers #31
Can not pass unit test cuda.space without a GT 720 #25
Makefile.kokkos lacks bounds checking option that CMake has #24
Kokkos can not complete unit tests with CUDA UVM enabled #23
Simplify teams + shared memory histogram example to remove vectorization #21
Kokkos needs to rever to ${PROJECT_NAME}_ENABLE_CXX11 not Trilinos_ENABLE_CXX11 #17
Kokkos Base Makefile adds AVX to KNC Build #16
MS Visual Studio 2013 Build Errors #9
subview(X, ALL(), j) for 2-D LayoutRight View X: should it view a column? #5

End_C++98 (2015-04-15)

* This Change Log was automatically generated by github_changelog_generator

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Change Log

4.0.0 (2023-02-21)

Features:

Backend and Architecture Enhancements:

CUDA:

HIP:

SYCL:

OpenMPTarget:

OpenMP:

General Enhancements

Build System Changes

Incompatibilities (i.e. breaking changes)

Deprecations

Bug Fixes

3.7.01 (2022-12-01)

Bug Fixes:

3.7.00 (2022-08-22)

Features:

Backends and Archs Enhancements:

Implemented enhancements

Harmonization of Kokkos execution environment initialization:

Build system updates:

Incompatibilities:

Deprecations:

Bug Fixes:

3.6.01 (2022-05-23)

Bug Fixes:

3.6.00 (2022-02-18)

Features:

Perf bug fix

Other improvements:

Deprecations:

Backends and Archs Enhancements:

SYCL:

CUDA:

HIP:

HPX:

OpenMP:

OpenMPTarget:

Other Improvements:

Implemented enhancements BuildSystem

Incompatibilities:

Bug Fixes:

3.5.00 (2021-10-19)

Features:

Deprecations:

Backends and Archs Enhancements:

SYCL:

CUDA:

HIP:

Serial:

OpenMPTarget:

Implemented enhancements BuildSystem

Important BuildSystem Updates:

Other Improvements:

Other Changes:

Tool Enhancements:

Miscellaneous:

Incompatibilities:

Bug Fixes:

3.4.01 (2021-05-19)

3.4.00 (2021-04-25)

3.3.01 (2021-01-06)

3.3.00 (2020-12-16)

3.2.01 (2020-11-17)

3.2.00 (2020-08-19)

3.1.01 (2020-04-14)

3.1.00 (2020-04-14)

3.0.00 (2020-01-27)

2.9.00 (2019-06-24)

2.8.00 (2019-02-05)

2.7.24 (2018-11-04)

2.7.00 (2018-05-24)

2.6.00 (2018-03-07)