HyTeg Patches

HyTeg/README.md

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+# Patches for HyTeg
+
+This folder contains configuration and regression patches for the `HyTeg` project.
+
+## General
+
+The HyTeg project exposes 2 configuration options that can be switched:
+
+- Solver
+  - CGSolver
+  - MinResSolver
+  - GMRESSolver
+- Smoother
+  - SORSmoother
+  - SymmetricSORSmoother
+
+## Configuration Patches
+
+There are configuration patches for the whole configuration space available. The `feature_tags` of the info files will contain the names of the configuration options that are activated.
+
+A configuration patch is of the form `$PTy_$SolverTy_$SmootherTy.patch` where `$SolverTy` and `$SmootherTy` are shorthands of the activated configuration option for that category.
+`$PType` is one of `["p1","p2"]`. It switches the poisson problem to use a different problem setup, so this is loosely comparable to running a different workload [citation needed].
+
+## Regression Patches
+
+For each configuration option one or multiple regression patches of 5 severities (`1ms`, `10ms`, `100ms`, `1000ms` and `10000ms`) are available.
+The `tags` in the `.info` file will contain the name of the confugration option that is affected. Artificial regressions will be introduced into a specific function in the source code.
+
+The regressed function will always be the `solve` function of the solver or smoother selected.

HyTeg/cg_solve_10000ms.info

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+description: Introduces an artificial regression of 10000ms into the solve function
+  of the CGSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: cg_solve_10000ms.patch
+project_name: HyTeg
+shortname: cg_solve_10000ms
+tags:
+- compile-time
+- regression
+- template
+- 10000ms
+- synthetic
+- CGSolver
+- HyTeg

HyTeg/cg_solve_10000ms.patch

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+diff --git a/src/hyteg/solvers/CGSolver.hpp b/src/hyteg/solvers/CGSolver.hpp
+index 4696554c9..5a0790613 100644
+--- a/src/hyteg/solvers/CGSolver.hpp
++++ b/src/hyteg/solvers/CGSolver.hpp
+@@ -66,6 +66,7 @@ class CGSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 10000 );
+       if ( maxIter_ == 0 )
+          return;
+
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/cg_solve_1000ms.info

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+description: Introduces an artificial regression of 1000ms into the solve function
+  of the CGSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: cg_solve_1000ms.patch
+project_name: HyTeg
+shortname: cg_solve_1000ms
+tags:
+- compile-time
+- regression
+- template
+- 1000ms
+- synthetic
+- CGSolver
+- HyTeg

HyTeg/cg_solve_1000ms.patch

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+diff --git a/src/hyteg/solvers/CGSolver.hpp b/src/hyteg/solvers/CGSolver.hpp
+index 4696554c9..5a0790613 100644
+--- a/src/hyteg/solvers/CGSolver.hpp
++++ b/src/hyteg/solvers/CGSolver.hpp
+@@ -66,6 +66,7 @@ class CGSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 1000 );
+       if ( maxIter_ == 0 )
+          return;
+
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/cg_solve_100ms.info

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+description: Introduces an artificial regression of 100ms into the solve function
+  of the CGSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: cg_solve_100ms.patch
+project_name: HyTeg
+shortname: cg_solve_100ms
+tags:
+- compile-time
+- regression
+- template
+- 100ms
+- synthetic
+- CGSolver
+- HyTeg

HyTeg/cg_solve_100ms.patch

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+diff --git a/src/hyteg/solvers/CGSolver.hpp b/src/hyteg/solvers/CGSolver.hpp
+index 4696554c9..5a0790613 100644
+--- a/src/hyteg/solvers/CGSolver.hpp
++++ b/src/hyteg/solvers/CGSolver.hpp
+@@ -66,6 +66,7 @@ class CGSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 100 );
+       if ( maxIter_ == 0 )
+          return;
+
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/cg_solve_10ms.info

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+description: Introduces an artificial regression of 10ms into the solve function of
+  the CGSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: cg_solve_10ms.patch
+project_name: HyTeg
+shortname: cg_solve_10ms
+tags:
+- compile-time
+- regression
+- template
+- 10ms
+- synthetic
+- CGSolver
+- HyTeg

HyTeg/cg_solve_10ms.patch

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+diff --git a/src/hyteg/solvers/CGSolver.hpp b/src/hyteg/solvers/CGSolver.hpp
+index 4696554c9..5a0790613 100644
+--- a/src/hyteg/solvers/CGSolver.hpp
++++ b/src/hyteg/solvers/CGSolver.hpp
+@@ -66,6 +66,7 @@ class CGSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 10 );
+       if ( maxIter_ == 0 )
+          return;
+
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/cg_solve_1ms.info

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+description: Introduces an artificial regression of 1ms into the solve function of
+  the CGSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: cg_solve_1ms.patch
+project_name: HyTeg
+shortname: cg_solve_1ms
+tags:
+- compile-time
+- regression
+- template
+- 1ms
+- synthetic
+- CGSolver
+- HyTeg

HyTeg/cg_solve_1ms.patch

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+diff --git a/src/hyteg/solvers/CGSolver.hpp b/src/hyteg/solvers/CGSolver.hpp
+index 4696554c9..5a0790613 100644
+--- a/src/hyteg/solvers/CGSolver.hpp
++++ b/src/hyteg/solvers/CGSolver.hpp
+@@ -66,6 +66,7 @@ class CGSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 1 );
+       if ( maxIter_ == 0 )
+          return;
+
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/gmres_solve_10000ms.info

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+description: Introduces an artificial regression of 10000ms into the solve function
+  of the GMRESSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: gmres_solve_10000ms.patch
+project_name: HyTeg
+shortname: gmres_solve_10000ms
+tags:
+- compile-time
+- regression
+- template
+- 10000ms
+- synthetic
+- GMRESSolver
+- HyTeg

HyTeg/gmres_solve_10000ms.patch

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+diff --git a/src/hyteg/solvers/GMRESSolver.hpp b/src/hyteg/solvers/GMRESSolver.hpp
+index 3bb7cad99..40280d2a3 100644
+--- a/src/hyteg/solvers/GMRESSolver.hpp
++++ b/src/hyteg/solvers/GMRESSolver.hpp
+@@ -76,6 +76,7 @@ class GMRESSolver : public Solver< OperatorType >
+
+    void solve( const OperatorType& A, const FunctionType& x, const FunctionType& b, const uint_t level ) override
+    {
++      fp_util::busy_sleep_for_millisecs( 10000 );
+       timingTree_->start( "GMRES Solver" );
+
+       real_t approxERR        = approxTOL_ + 1;
+diff --git a/src/hyteg/solvers/Solver.hpp b/src/hyteg/solvers/Solver.hpp
+index 6d9ebb542..a9354816d 100644
+--- a/src/hyteg/solvers/Solver.hpp
++++ b/src/hyteg/solvers/Solver.hpp
+@@ -21,6 +21,23 @@
+
+ #include "core/DataTypes.h"
+
++namespace fp_util {
++   inline void busy_sleep_for_millisecs(unsigned Millisecs) {
++      auto start_us = std::chrono::duration_cast<std::chrono::microseconds>(
++          std::chrono::high_resolution_clock::now().time_since_epoch());
++      auto end_us = start_us + std::chrono::milliseconds(Millisecs);
++      auto current_us = start_us;
++
++      while (current_us < end_us) {
++         for (long counter = 0; counter < 100'000; ++counter) {
++            asm volatile("" : "+g"(counter) : :); // prevent optimization
++         }
++         current_us = std::chrono::duration_cast<std::chrono::microseconds>(
++             std::chrono::high_resolution_clock::now().time_since_epoch());
++      }
++   }
++}
++
+ namespace hyteg {
+ template < class OperatorType >
+ class Solver

HyTeg/gmres_solve_1000ms.info

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+description: Introduces an artificial regression of 1000ms into the solve function
+  of the GMRESSolver of HyTeg.
+include_revisions:
+  revision_range:
+    start: f4711dadc3f61386e6ccdc704baa783253332db2
+path: gmres_solve_1000ms.patch
+project_name: HyTeg
+shortname: gmres_solve_1000ms
+tags:
+- compile-time
+- regression
+- template
+- 1000ms
+- synthetic
+- GMRESSolver
+- HyTeg