OpenBLAS 0.3.27

OpenBLAS is an optimized BLAS (Basic Linear Algebra Subprograms) library based on GotoBLAS2 1.13 BSD version.

Tags blas lapak c fortran assembly cpp
License BSDL-2
State stable

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Recent Releases

0.3.2704 Apr 2024 22:05 minor bugfix: general: added initial (generic) support for the CSKY architecture capped the maximum number of threads used in GEMM, GETRF and POTRF to avoid creating underutilized or idle threads sped up multithreaded POTRF on all platforms added extension openblas_set_num_threads_local() that returns the previous thread count re-evaluated the SGEMV and DGEMV load thresholds to avoid activating multithreading for too small workloads improved the fallback code used when the precompiled number of threads is exceeded, and made it callable multiple times during the lifetime of an instance added CBLAS interfaces for the BLAS extensions ?AMIN,?AMAX, CAXPYC and ZAXPYC fixed a potential buffer overflow in the interface to the GEMMT kernels fixed use of incompatible pointer types in GEMMT and C/ZAXPBY as flagged by GCC-14 fixed unwanted case sensitivity of the character parameters in ?TRTRS sped up the OpenMP thread management code fixed sizing of logical variables in INTERFACE64 builds of the C version of LAPACK fixed inclusion of new LAPACK and LAPACKE functions from LAPACK 3.11 in the shared library added a testsuite for the BLAS extensions modified the error thresholds for SGS/DGS functions in the LAPACK testsuite to suppress spurious errors added support for building the benchmark collection with CMAKE added rewriting of linker options to avoid linking both libgomp and libomp in CMAKE builds with OpenMP enabled that use clang with gfortran fixed building on systems with ucLibc added support for calling ?NRM2 with a negative increment value on all architectures added support for the LLVM18 version of the flang-new compiler fixed handling of the OPENBLAS_LOOPS variable in several benchmarks Integrated fixes from the Reference-LAPACK project: Increased accuracy in C/ZLARFGP (Reference-LAPACK PR 981)
0.3.2603 Jan 2024 13:32 minor bugfix: general: - improved the version of openblas.pc that is created by the CMAKE build - fixed a CMAKE-specific build problem on older versions of MacOS - worked around linking problems on old versions of MacOS - corrected installation location of the lapacke_mangling header in CMAKE builds - added type declarations for complex variables to the MSVC-specific parts of the LAPACK header - significantly sped up ?GESV for small problem sizes by introducing a lower bound for multithreading - imported additions and corrections from the Reference-LAPACK project: - added new LAPACK functions for truncated QR with pivoting (Reference-LAPACK PRs 891 941) - handle miscalculation of minimum work array size in corner cases (Reference-LAPACK PR 942) - fixed use of uninitialized variables in ?GEDMD and improved inline documentation (PR 959) - fixed use of uninitialized variables (and consequential failures) in ?BBCSD (PR 967) - added tests for the recently introduced Dynamic Mode Decomposition functions (PR 736) - fixed several memory leaks in the LAPACK testsuite (PR 953) - fixed counting of testsuite results by the Python script (PR 954) x86-64: - fixed computation of CASUM on SkylakeX and newer targets in the special case that AVX512 is not supported by the compiler or operating environment - fixed potential undefined behaviour in the CASUM/ZASUM kernels for AVX512 targets - worked around a problem in the pre-AVX kernels for GEMV - sped up the thread management code on MS Windows arm64: - fixed building of the LAPACK testsuite with Xcode 15 on Apple M1 and newer - sped up the thread management code on MS Windows - sped up SGEMM and DGEMM on Neoverse V1 and N1 - sped up ?DOT on SVE-capable targets - reduced the number of targets in DYNAMIC_ARCH builds by eliminating functionally equivalent ones - included support for Apple M1 and newer targets in DYNAMIC_ARCH builds power: - improved the SGEMM kernel for POWER10 - fixed compilation with (very) old versions of gc