Martin Kroeker
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| OpenBLAS ChangeLog | |||
| ==================================================================== | |||
| Version 0.3.28 | |||
| 8-Aug-2024 | |||
| general: | |||
| - Reworked the unfinished implementation of HUGETLB from GotoBLAS | |||
| for allocating huge memory pages as buffers on suitable systems | |||
| - Changed the unfinished implementation of GEMM3M for the generic | |||
| target on all architectures to at least forward to regular GEMM | |||
| - Improved multithreaded GEMM performance for large non-skinny matrices | |||
| - Improved BLAS3 performance on larger multicore systems through improved | |||
| parallelism | |||
| - Improved performance of the initial memory allocation by reducing | |||
| locking overhead | |||
| - Improved performance of GBMV at small problem sizes by introducing | |||
| a size barrier for the switch to multithreading | |||
| - Added an implementation of the CBLAS_GEMM_BATCH extension | |||
| - Fixed miscompilation of CAXPYC and ZAXPYC on all architectures in | |||
| CMAKE builds (error introduced in 0.3.27) | |||
| - Fixed corner cases involving the handling of NAN and INFINITY | |||
| arguments in ?SCAL on all architectures | |||
| - Added support for cross-compiling to WEBM with CMAKE (in addition | |||
| to the already present makefile support) | |||
| - Fixed NAN handling and potential accuracy issues in compilations with | |||
| Intel ICX by supplying a suitable fp-model option by default | |||
| - The contents of the github project wiki have been converted into | |||
| a new set of documentation included with the source code. | |||
| - It is now possible to register a callback function that replaces | |||
| the built-in support for multithreading with an external backend | |||
| like TBB (openblas_set_threads_callback_function) | |||
| - Fixed potential duplication of suffixes in shared library naming | |||
| - Improved C compiler detection by the build system to tolerate more | |||
| naming variants for gcc builds | |||
| - Fixed an unnecessary dependency of the utest on CBLAS | |||
| - Fixed spurious error reports from the BLAS extensions utest | |||
| - Fixed unwanted invocation of the GEMM3M tests in cross-compilation | |||
| - Fixed a flaw in the makefile build that could lead to the pkgconfig | |||
| file containing an entry of UNKNOWN for the target cpu after installing | |||
| - Integrated fixes from the Reference-LAPACK project: | |||
| - Fixed uninitialized variables in the LAPACK tests for ?QP3RK (PR 961) | |||
| - Fixed potential bounds error in ?UNHR_COL/?ORHR_COL (PR 1018) | |||
| - Fixed potential infinite loop in the LAPACK testsuite (PR 1024) | |||
| - Make the variable type used for hidden length arguments configurable (PR 1025) | |||
| - Fixed SYTRD workspace computation and various typos (PR 1030) | |||
| - Prevent compiler use of FMA that could increase numerical error in ?GEEVX (PR 1033) | |||
| x86-64: | |||
| - reverted thread management under Windows to its state before 0.3.26 | |||
| due to signs of race conditions in some circumstances now under study | |||
| - fixed accidental selection of the unoptimized generic SBGEMM kernel | |||
| in CMAKE builds for CooperLake and SapphireRapids targets | |||
| - fixed a potential thread buffer overrun in SBSTOBF16 on small systems | |||
| - fixed an accuracy issue in ZSCAL introduced in 0.3.26 | |||
| - fixed compilation with CMAKE and recent releases of LLVM | |||
| - added support for Intel Emerald Rapids and Meteor Lake cpus | |||
| - added autodetection support for the Zhaoxin KX-7000 cpu | |||
| - fixed autodetection of Intel Prescott (probably broken since 0.3.19) | |||
| - fixed compilation for older targets with the Yocto SDK | |||
| - fixed compilation of the converter-generated C versions | |||
| of the LAPACK sources with gcc-14 | |||
| - improved compiler options when building with CMAKE and LLVM for | |||
| AVX512-capable targets | |||
| - added support for supplying the L2 cache size via an environment | |||
| variable (OPENBLAS_L2_SIZE) in case it is not correctly reported | |||
| (as in some VM configurations) | |||
| - improved the error message shown when thread creation fails on startup | |||
| - fixed setting the rpath entry of the dylib in CMAKE builds on MacOS | |||
| arm: | |||
| - fixed building for baremetal targets with make | |||
| arm64: | |||
| - Added a fast path forwarding SGEMM and DGEMM calls with a 1xN or Mx1 | |||
| matrix to the corresponding GEMV kernel | |||
| - added optimized SGEMV and DGEMV kernels for A64FX | |||
| - added optimized SVE kernels for small-matrix GEMM | |||
| - added A64FX to the cpu list for DYNAMIC_ARCH | |||
| - fixed building with support for cpu affinity | |||
| - worked around accuracy problems with C/ZNRM2 on NeoverseN1 and | |||
| Apple M targets | |||
| - improved GEMM performance on Neoverse V1 | |||
| - fixed compilation for NEOVERSEN2 with older compilers | |||
| - fixed potential miscompilation of the SVE SDOT and DDOT kernels | |||
| - fixed potential miscompilation of the non-SVE CDOT and ZDOT kernels | |||
| - fixed a potential overflow when using very large user-defined BUFFERSIZE | |||
| - fixed setting the rpath entry of the dylib in CMAKE builds on MacOS | |||
| power: | |||
| - Added a fast path forwarding SGEMM and DGEMM calls with a 1xN or Mx1 | |||
| matrix to the corresponding GEMV kernel | |||
| - significantly improved performance of SBGEMM on POWER10 | |||
| - fixed compilation with OpenMP and the XLF compiler | |||
| - fixed building of the BLAS extension utests under AIX | |||
| - fixed building of parts of the LAPACK testsuite with XLF | |||
| - fixed CSWAP/ZSWAP on big-endian POWER10 targets | |||
| - fixed a performance regression in SAXPY on POWER10 with OpenXL | |||
| - fixed accuracy issues in CSCAL/ZSCAL when compiled with LLVM | |||
| - fixed building for POWER9 under FreeBSD | |||
| - fixed a potential overflow when using very large user-defined BUFFERSIZE | |||
| - fixed an accuracy issue in the POWER6 kernels for GEMM and GEMV | |||
| riscv64: | |||
| - Added a fast path forwarding SGEMM and DGEMM calls with a 1xN or Mx1 | |||
| matrix to the corresponding GEMV kernel | |||
| - fixed building for RISCV64_GENERIC with OpenMP enabled | |||
| - added DYNAMIC_ARCH support (comprising GENERIC_RISCV64 and the two | |||
| RVV 1.0 targets with vector length of 128 and 256) | |||
| - worked around the ZVL128B kernels for AXPBY mishandling the special | |||
| case of zero Y increment | |||
| loongarch64: | |||
| - improved GEMM performance on servers of the 3C5000 generation | |||
| - improved performance and stability of DGEMM | |||
| - improved GEMV and TRSM kernels for LSX and LASX vector ABIs | |||
| - fixed CMAKE compilation with the INTERFACE64 option set | |||
| - fixed compilation with CMAKE | |||
| - worked around spurious errors flagged by the BLAS3 tests | |||
| - worked around a miscompilation of the POTRS utest by gcc 14.1 | |||
| mips64: | |||
| - fixed ASUM and SUM kernels to accept negative step sizes in X | |||
| - fixed complex GEMV kernels for MSA | |||
| ==================================================================== | |||
| Version 0.3.27 | |||
| 4-Apr-2024 | |||