v2.36.0-rc1 (25 November 2024)

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v2.35.0 (3 June 2024)

• Exposes new arguments for laplace:
  calculate_lp is a boolean subarg of laplace which controls whether or not log_prob is called for each approximate draw. Default is true (existing behavior).
  The diagnostic_file argument of output now exposes information from the mode, namely the gradient and Hessian.
  (#1246)
• CmdStan will now halt if a filesystem error prevents writing to one of the output files. (#1249)
• The generate_quantities method now supports the num_chains arguments to perform downstream analysis in parallel. (#1256)
• log_prob now prevents the same CSV from being read and written to at the same time. (#1259)
• Boolean arguments to cmdstan accept true and false in addition to 1 and 0. (#1260)
• mingw32-make is no longer necessary on Windows, the standard make program is sufficient. (#1262)
• Improved the logic around the USER_HEADER variable to give an informative error when it is misspecified. (#1264)
• make clean deletes more files, hopefully making it so make clean-all needs to be run far less often. (#1267)
• Fixed an issue preventing the precompiled header from being used with GCC. (#1268)
• Allow num_warmup=0 to be paired with adapt engaged=0 when the algorithm is the fixed_param sampler. (#1277)

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v2.35.0-rc3 (23 May 2024)

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v2.35.0-rc2 (13 May 2024)

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v2.35.0-rc1 (13 May 2024)

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v2.34.1 (23 January 2024)

• Fixed an indexing error which could lead to crashes (#1239)
• Fixed an issue where output was swallowed by the log_prob method if an error occurred (#1235)
• Fixed an issue where floating point arguments would be echoed back to the user with insufficient precision (#1243)

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v2.34.0 (16 January 2024)

• Add option adaptation save_metric=1 to save adapted metric in separate JSON file with elements "stepsize", "metric_type" and "inv_metric" (#1203, #1229)
• New argument under output save_cmdstan_config. If set to 1, creates output_config.json which contains the argument tree and extra information (equivalent to the CSV file header) (#1204)
• Adds psis_resample and calculate_lp as options for Pathfinder (#1234)
• Removed usages of boost::lexical_cast (#1205)
• Resolved various compiler warnings (#1206)
• Fixed a linking issue when building stansummary (#1209)
• Fixed an issue where the default values of some arguments were not printed in sufficient precision (#1215)
• Improved the error users see if they are missing the stan or stan_math submodules (#1217)
• Improved the dependency detection in the build system (#1219)
• Added a warning when more PSIS draws are requested than total number of draws from single-pathfinders (#1221)
• Disallowed pathfinder when the model has no parameters. (#1221)
• Fixed a typo in make help-dev. (#1225)
• Fixed several edge cases and unexpected behaviors in the way output filenames were generated for multi-chain sampling and multi-path Pathfinder (#1228)
• Added a version.hpp header (#1231)

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v2.34.0-rc1 (8 January 2024)

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v2.33.1 (13 September 2023)

• Update stanc3 binaries to v2.33.1

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v2.33.0 (5 September 2023)

• Exposed pathfinder algorithm. (#1155)
• Added CXX_MAJOR and CXX_MINOR to the name of the precompiled header file when it is enabled. The goal is to prevent the annoying errors from clang updates etc. (#1171)
• Removed use of boost::lexical_cast wherever possible. (#1172)
• Fixes various typos in output messages and comments. (#1174)
• Enabled the num_chains argument on all HMC variants other than the static engine. (#1176)
• Fixed a bug where the num_chains argument was not properly using multiple init files (#1191)
• A warning is now shown when users provide "R dump" formatted inputs to CmdStan, letting them know that this format is essentially unsupported and new features like Tuples are not being added to it. (#1177, #1183)

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• CmdStan User's Guide 2.33

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• CmdStan User's Guide 2.33