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general:

  • some code cleanup, with added casts etc.
  • fixed obtaining the cpu count with OpenMP and OMP_PROC_BIND unset
  • fixed pivot index calculation by ?LASWP for negative increments other than one
  • fixed input argument check in LAPACK ? GEQRT2
  • improved the check for a Fortran compiler in CMAKE builds
  • disabled building OpenBLAS' optimized versions of LAPACK complex SPMV,SPR,SYMV,SYR with NO_LAPACK=1
  • fixed building of LAPACK on certain distributed filesystems with parallel gmake
  • fixed building the shared library on MacOS with classic flang

x86_64:

  • fixed cross-compilation with CMAKE for CORE2 target
  • fixed miscompilation of AVX512 code in DYNAMIC_ARCH builds
  • added support for the "incidental" AVX512 hardware in Alder Lake when enabled in BIOS

E2K:

  • add new architecture (Russian Elbrus E2000 family)

SPARC:

  • fix IMIN/IMAX

ARMV8:

  • added SVE-enabled CGEMM and ZGEMM kernels for ARMV8SVE and A64FX
  • added support for Neoverse N2 and V1 cpus

MIPS64:

  • fixed autodetection of MSA capability

LOONGARCH64:

  • added an optimized DGEMM kernel

abfaa43d995046ca4c56ccf14165c93c OpenBLAS-0.3.20.tar.gz
33526b15e15971edb657edc15de0c67f OpenBLAS-0.3.20.zip
3d9daef71592665261c032888bd810d6 OpenBLAS-0.3.20-x64.zip
5bfe847082510e44cdc59755cd49b941 OpenBLAS-0.3.20-x86.zip

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2480e50
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general:

  • reverted unsafe TRSV/ZRSV optimizations introduced in 0.3.16
  • fixed a potential thread race in the thread buffer reallocation routines
    that were introduced in 0.3.18
  • fixed miscounting of thread pool size on Linux with OMP_PROC_BIND=TRUE
  • fixed CBLAS interfaces for CSROT/ZSROT and CROTG/ZROTG
  • made automatic library suffix for CMAKE builds with INTERFACE64 available
    to CBLAS-only builds

x86_64:

  • DYNAMIC_ARCH builds now fall back to the cpu with most similar capabilities
    when an unknown CPUID is encountered, instead of defaulting to Prescott
  • added cpu detection for Intel Alder Lake
  • added cpu detection for Intel Sapphire Rapids
  • added an optimized SBGEMM kernel for Sapphire Rapids
  • fixed DYNAMIC_ARCH builds on OSX with CMAKE
  • worked around DYNAMIC_ARCH builds made on Sandybridge failing on SkylakeX
  • fixed missing thread initialization for static builds on Windows/MSVC
  • fixed an excessive read in ZSYMV

POWER:

  • added support for POWER10 in big-endian mode
  • added support for building with CMAKE
  • added optimized SGEMM and DGEMM kernels for small matrix sizes

ARMV8:

  • added basic support and cputype detection for Fujitsu A64FX
  • added a generic ARMV8SVE target
  • added SVE-enabled SGEMM and DGEMM kernels for ARMV8SVE and A64FX
  • added optimized CGEMM and ZGEMM kernels for Cortex A53 and A55 cpus
  • fixed cpuid detection for Apple M1 and improved performance
  • improved compiler flag setting in CMAKE builds

RISCV64:

  • fixed improper initialization in CSCAL/ZSCAL for strided access patterns

MIPS:

  • added a GENERIC target for MIPS32
  • added support for cross-compiling to MIPS32 on x86_64 using CMAKE

MIPS64:

  • fixed misdetection of MSA capability

9721d04d72a7d601c81eafb54520ba2c OpenBLAS-0.3.19.tar.gz
bd74be5bafbc748266b4e9578bba955b OpenBLAS-0.3.19.zip
507a02d501944bd7586caeee4944d409 OpenBLAS-0.3.19-x86.zip
0cff635aeda36435813caeac391ca39e OpenBLAS-0.3.19-x64.zip

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efe4248
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general:

  • when the build-time number of preconfigured threads is exceeded
    at runtime (by an external program calling BLAS functions from
    a larger number of threads), OpenBLAS will now allocate an
    auxiliary control structure for up to 512 additional threads
    instead of aborting
  • added support for Loongson's LoongArch64 cpu architecture
  • fixed building OpenBLAS with CMAKE and -DBUILD_BFLOAT16=ON
  • added support for building OpenBLAS as a CMAKE subproject
  • added support for building for Windows/ARM64 targets with clang
  • improved support for building with the IBM xlf compiler
  • imported Reference-LAPACK PR 625 (out-of-bounds access in ?LARRV)
  • imported Reference-LAPACK PR 597 for testsuite compatibility with
    LLVM's libomp

x86_64:

  • added SkylakeX S/DGEMM kernels for small problem sizes (MNK<=1000000)
  • added optimized SBGEMM for Intel Cooper Lake
  • reinstated the performance patch for AVX512 SGEMV_T with a proper fix
  • added a workaround for a gcc11 tree-vectorizer bug that caused spurious
    failures in the test programs for complex BLAS3 when compiling at -O3
    (the default for cmake "release" builds)
  • added support for runtime cpu count detection under Haiku OS
  • worked around a long-standing miscompilation issue of the Haswell DGEMV_T
    kernel with gcc that could produce NaN output in some corner cases

POWER:

  • improved performance of DASUM on POWER10

ARMV8:

  • fixed crashes (use of reserved register x18) on Apple M1 under OSX
  • fixed building with gcc releases earlier than 5.1

MIPS:

  • fixed building under BSD

MIPS64:

  • fixed building under BSD

5cd5df5a1541ad414f5874aaae17730f OpenBLAS-0.3.18.tar.gz
0ebf2e1ddc491f37be26bea4e0d1239a OpenBLAS-0.3.18.zip
b76692df00d0b655d4f14058f6c2e10f OpenBLAS-0.3.18-x64.zip
b421f7c47223c5f228c1fe1c66f3f0e1 OpenBLAS-0.3.18-x86.zip
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common:

  • reverted the optimization of SGEMV_N/DGEMV_N for small input sizes
    and consecutive arguments as it led to stack overflows on x86_64
    with some operating systems (notably OSX and Windows)

x86_64:

  • reverted the performance patch for SGEMV_T on AVX512 as it caused
    wrong results in some applications

SPARC:

  • fixed compilation with compilers other than gcc

5429954163bcbaccaa13e11fe30ca5b6 OpenBLAS-0.3.17.tar.gz
d7e52f5f9ed8e6fc5a5269634ecface3 OpenBLAS-0.3.17.zip
1ee19f55bfd46120689cd260e16e7ce6 OpenBLAS-0.3.17-x64.zip
40f6c0ac1b33729cc94f7f9af177e3a6 OpenBLAS-0.3.17-x86.zip

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common:

  • drastically reduced the stack size requirements for running the LAPACK
    testsuite (Reference-LAPACK PR 553)
  • fixed spurious test failures in the LAPACK testsuite (Reference-LAPACK
    PR 564)
  • expressly setting DYNAMIC_ARCH=0 no longer enables dynamic_arch mode
  • improved performance of xGER, xSPR, xSPR2, xSYR, xSYR2, xTRSV, SGEMV_N
    and DGEMV_N, for small input sizes and consecutive arguments
  • improved performance of xGETRF, xPORTF and xPOTRI for small input sizes
    by disabling multithreading
  • fixed installing with BSD versions of the "install" utility

RISCV:

  • fixed the implementation of xIMIN
  • improved the performance of DSDOT
  • fixed linking of the tests on C910V with current vendor gcc

POWER:

  • fixed SBGEMM computation for some odd value inputs
  • fixed compilation for PPCG4, PPC970, POWER3, POWER4 and POWER5

x86_64:

  • improved performance of SGEMV_N and SGEMV_T for small N on AVX512-capable cpus
  • worked around a miscompilation of ZGEMM/ZTRMM on Sandybridge with old gcc
    versions
  • fixed compilation with MS Visual Studio versions older than 2017
  • fixed macro name collision with winnt.h from the latest Win10 SDK
  • added cpu type autodetection for Intel Ice Lake SP
  • fixed cpu type autodetection for Intel Tiger Lake
  • added cpu type autodetection for recent Centaur/Zhaoxin models
  • fixed compilation with musl libc

ARM64:

  • fixed compilation with gcc/gfortran on the Apple M1
  • fixed linking of the tests on FreeBSD
  • fixed missing restore of a register in the recently rewritten DNRM2 kernel
    for ThunderX2 and Neoverse N1 that could cause spurious failures in e.g.
    DGEEV
  • added compiler optimization flags for the EMAG8180
  • added initial support for Cortex A55

ARM:

  • fixed linking of the tests on FreeBSD

md5sum:
78cc2d682cfcd64edf982173420c06c0 OpenBLAS-0.3.16.tar.gz
1a35c22920aca83828eb2478043847b9 OpenBLAS-0.3.16.zip
2f4404a4da21b319447b3ce7fe351426 OpenBLAS-0.3.16-x64.zip
2eb01f0b2eb31c7938d7a3a536638aaa OpenBLAS-0.3.16-x86.zip

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904f9a2
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common:

  • imported improvements and bugfixes from Reference-LAPACK 3.9.1
  • imported LAPACKE interface fixes from Reference-LAPACK PRs 534 + 537
  • fixed a problem in the cpu detection of 0.3.14 that prevented cross-compilation
  • fixed a sequence problem in the generation of softlinks to the library in GMAKE

RISC V:

  • fixed a potential division by zero in CROTG and ZROTG

POWER:`

  • fixed LAPACK testsuite failures seen with the NVIDIA HPC compiler
  • improved CGEMM, DGEMM and ZGEMM performance on POWER10
  • added an optimized ZGEMV kernel for POWER10
  • fixed a potential division by zero in CROTG and ZROTG

x86_64:

  • added support for Intel Control-flow Enforcement Technology (CET)
  • reverted the DOMATCOPY_RT code to the generic C version
  • fixed a bug in the AVX512 SGEMM kernel introduced in 0.3.14
  • fixed misapplication of -msse flag to non-SSE cpus in DYNAMIC_ARCH
  • added support for compilation of the benchmarks on older OSX versions
  • fixed propagation of the NO_AVX512 option in CMAKE builds
  • fixed compilation of the AVX512 SGEMM kernel with clang-cl on Windows
  • fixed compilation of the CTESTs with INTERFACE64=1 (random faults on OSX)
  • corrected the Haswell DROT kernel to require AVX2/FMA3 rather than AVX512

ARM:

  • fixed a potential division by zero in CROTG and ZROTG
  • fixed a potential overflow in IMATCOPY/ZIMATCOPY and the CTESTs

ARM64:

  • fixed spurious reads outside the array in the SGEMM tcopy macro
  • fixed a potential division by zero in CROTG and ZROTG
  • fixed a segmentation fault in DYNAMIC_ARCH builds (reappeared in 0.3.14)

MIPS

  • fixed a potential division by zero in CROTG and ZROTG
  • fixed a potential overflow in IMATCOPY/ZIMATCOPY and the CTESTs

##/MIPS64:

  • fixed a potential division by zero in CROTG and ZROTG

SPARC:

  • fixed a potential division by zero in CROTG and ZROTG

183dbd71895f2018d297be271cb31128 OpenBLAS-0.3.15.tar.gz
7bc1ea337884df348ddc87ac27a801d6 OpenBLAS-0.3.15.zip
acffcbe7be0bb22d28320e39a4439d1f OpenBLAS-0.3.15-x64.zip
ef587a916b7b44c328ad553dbc630646 OpenBLAS-0.3.15-x86.zip

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2f6d35c
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Pre-release

NOTE: this has a (now) known regression in AVX512 SGEMM

common:

  • Fixed a race condition on thread shutdown in non-OpenMP builds
  • Fixed custom BUFFERSIZE option getting ignored in gmake builds
  • Fixed CMAKE compilation of the TRMM kernels for GENERIC platforms
  • Added CBLAS interfaces for CROTG, ZROTG, CSROT and ZDROT
  • improved performance of OMATCOPY_RT across all platforms
  • Changed perl scripts to use env instead of a hardcoded /usr/bin/perl
  • Fixed potential misreading of the GCC compiler version in the build scripts
  • Fixed convergence problems in LAPACK complex GGEV/GGES (Reference-LAPACK #477)
  • Reduced the stacksize requirements for running the LAPACK testsuite (Reference-LAPACK #335)

RISC V:

  • Fixed compilation on RISCV (missing entry in getarch)

POWER:

  • Fixed compilation for DYNAMIC_ARCH with clang and with older gcc versions
  • Added support for compilation on FreeBSD/ppc64le
  • Added optimized POWER10 kernels for SSCAL, DSCAL, CSCAL, ZSCAL
  • Added optimized POWER10 kernels for SROT, DROT, CDOT, SASUM, DASUM
  • improved SSWAP, DSWAP, CSWAP, ZSWAP performance on POWER10
  • improved SCOPY and CCOPY performance on POWER10
  • improved SGEMM and DGEMM performance on POWER10
  • Added support for compilation with the NVIDIA HPC compiler

x86_64:

  • Added an optimized bfloat16 GEMM kernel for Cooperlake
  • Added CPUID autodetection for Intel Rocket Lake and Tiger Lake cpus
  • improved the performance of SASUM,DASUM,SROT,DROT on AMD Ryzen cpus
  • Added support for compilation with the NAG Fortran compiler
  • Fixed recognition of the AMD AOCC compiler
  • Fixed compilation for DYNAMIC_ARCH with clang on Windows
  • Added support for running the BLAS/CBLAS tests on Windows
  • Fixed signatures of the tls callback functions for Windows x64
  • Fixed various issues with fma intrinsics support handling

ARM:

  • Support compilation for embedded Cortex M4 targets via a new option EMBEDDED

ARM64:

  • Fixed the THUNDERX2T99 and NEOVERSEN1 DNRM2/ZNRM2 kernels for inputs with Inf
  • Added support for the DYNAMIC_LIST option
  • Added support for compilation with the NVIDIA HPC compiler
  • Added support for compiling with the NAG Fortran compiler

md5sum:
a5aa1d61d4b27f471dc60c40c11e61fe OpenBLAS-0.3.14.tar.gz
f8fe13f5ebf9c4c487784f4e6a7b1a56 OpenBLAS-0.3.14.zip

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common:

  • Added a generic bfloat16 SBGEMV kernel
  • Fixed a potentially severe memory leak after fork in OpenMP builds
    that was introduced in 0.3.12
  • Added detection of the Fujitsu Fortran compiler
  • Added detection of the (e)gfortran compiler on OpenBSD
  • Added support for overriding the default name of the library independently
    from symbol suffixing in the gmake builds (already supported in cmake)

RISC V:

  • Added a RISC V port optimized for C910V

POWER:

  • Added optimized POWER10 kernels for SAXPY, CAXPY, SDOT, DDOT and DGEMV_N
  • Improved DGEMM performance on POWER10
  • Improved STRSM and DTRSM performance on POWER9 and POWER10
  • Fixed segmemtation faults in DYNAMIC_ARCH builds
  • Fixed compilation with the PGI compiler

x86:

  • Fixed compilation of kernels that require SSE2 intrinsics since 0.3.12

x86_64:

  • Added an optimized bfloat16 SBGEMV kernel for SkylakeX and Cooperlake
  • Improved the performance of SASUM and DASUM kernels through parallelization
  • Improved the performance of SROT and DROT kernels
  • Improved the performance of multithreaded xSYRK
  • Fixed OpenMP builds that use the LLVM Clang compiler together with GNU gfortran
    (where linking of both the LLVM libomp and GNU libgomp could lead to lockups or
    wrong results)
  • Fixed miscompilations by old gcc 4.6
  • Fixed misdetection of AVX2 capability in some Sandybridge cpus
  • Fixed lockups in builds combining DYNAMIC_ARCH with TARGET=GENERIC on OpenBSD

ARM64:

  • Fixed segmentation faults in DYNAMIC_ARCH builds

MIPS:

  • Improved kernels for Loongson 3R3 ("3A") and 3R4 ("3B") models, including MSA
  • Fixed bugs in the MSA kernels for CGEMM, CTRMM, CGEMV and ZGEMV
  • Added handling of zero increments in the MSA kernels for SSWAP and DSWAP
  • Added DYNAMIC_ARCH support for MIPS64 (currently Loongson3R3/3R4 only)

SPARC:

  • Fixed building 32 and 64 bit SPARC kernels with the SolarisStudio compilers

md5sum:
2ca05b9cee97f0d1a8ab15bd6ea2b747 OpenBLAS-0.3.13.tar.gz
ab433ae7ed37ad282a67c2cfcc7c4301 OpenBLAS-0.3.13.zip
855469f768c6e32cf68f9cdb6f5fa69e OpenBLAS-0.3.13-x64.zip
467463847f57f54b94242fb6393a0bf9 OpenBLAS-0.3.13-x86.zip

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common:

  • Fixed missing BLAS/LAPACK functions (inadvertently dropped during
    the build system restructuring to support selective compilation)
  • Fixed argument conversion macro in LAPACKE_zgesvdq (LAPACK #458)

POWER:

  • Added optimized SCOPY/CCOPY kernels for POWER10
  • Increased and unified the default size of the GEMM buffer
  • Fixed building for POWER10 in DYNAMIC_ARCH mode
  • POWER10 compatibility test now checks binutils version as well
  • Cleaned up compiler warnings

x86_64:

  • corrected compiler version checks for AVX2 compatibility
  • added compiler option -mavx2 for building with flang
  • fixed direct SGEMM pathway for small matrix sizes (broken by
    the code refactoring in 0.3.11)
  • fixed unhandled partial register clobbers in several kernels
    for AXPY,DOT,GEMV_N and GEMV_T flagged by gcc10 tree-vectorizer

ARMV8:

  • improved Apple Vortex support to include cross-compiling

Download OpenBLAS

md5sums:
03bff4558fc701b7d0e689814055ecb2 OpenBLAS-0.3.12.zip
baf8c58c0ef6ebe0f9eb74a5c4acd662 OpenBLAS-0.3.12.tar.gz
4df4ebb7b5c4f1b5ec8fa58f48be6a51 OpenBLAS-0.3.12-x64.zip

51c2261
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Pre-release

NOTE there appear to be several defects in this version unfortunately - this should not be redistributed or used in a production environment

common:

  • API change:

        the newly added BFLOAT16 functions were renamed to use the
        letter "B" instead of "H" to avoid potential confusion with
        the IEEE "half precision float" type, i.e. the 0.3.10
        SHGEMM is now SBGEMM and the corresponding build option
        was changed from "BUILD_HALF" to "BUILD_BFLOAT16".
    
  • Reduced the default BLAS3_MEM_ALLOC_THRESHOLD (used as an upper
    limit for placing temporary arrays on the stack) to be compatible
    with a stack size of 1mb (as imposed by the JAVA runtime library)
  • Added mixed-precision dot function SBDOT and utility functions
    shstobf16, shdtobf16, sbf16tos and dbf16tod to convert between
    single or double precision float arrays and bfloat16 arrays
  • Fixed prototypes of LAPACK_?ggsvp and LAPACK_?ggsvd functions
    in lapack.h
  • Fixed underflow and rounding errors in LAPACK SLANV2 and DLANV2
    (causing miscalculations in e.g. SHSEQR/DHSEQR, LAPACK issue #263)
  • Fixed workspace calculation in LAPACK ?GELQ (LAPACK issue #415)
  • Fixed several bugs in the LAPACK testsuite
  • Improved performance of TRMM and TRSM for certain problem sizes
  • Fixed infinite recursions and workspace miscalculations in ReLAPACK
  • CMAKE builds no longer require pkg-config for creating the .pc file
  • Makefile builds no longer misread NO_CBLAS=0 or NO_LAPACK=0 as
    enabling these options
  • Fixed detection of gfortran when invoked through an mpi wrapper
  • Improve thread reinitialization performance with OpenMP after a fork
  • Added support for building only the subset of the library required
    for a particular precision by specifying BUILD_SINGLE, BUILD_DOUBLE
  • Optional function name prefixes and suffixes are now correctly
    reflected in the generated cblas.h
  • Added CMAKE build support for the LAPACK and multithreading tests

POWER:

  • Added optimized support for POWER10
  • Added support for compiling for POWER8 in 32bit mode
  • Added support for compilation with LLVM/clang
  • Added support for compilation with NVIDIA/PGI compilers
  • Fixed building on big-endian POWER8
  • Fixed miscompilation of ZDOTC by gcc10
  • Fixed alignment errors in the POWER8 SAXPY kernel
  • Improved CPU detection on AIX
  • Supported building with older compilers on POWER9

x86_64:

  • Added support for Intel Cooperlake
  • Added autodetection of AMD Renoir/Matisse/Zen3 cpus
  • Added autodetection of Intel Comet Lake cpus
  • Reimplemented ?sum, ?dot and daxpy using universal intrinsics
  • Reset the fpu state before using the fpu on Windows as a workaround
    for a problem introduced in Windows 10 build 19041 (a.k.a. SDK 2004)
  • Fixed potentially undefined behaviour in the dot and gemv_t kernels
  • Fixed a potential segmentation fault in DYNAMIC_ARCH builds
  • Fixed building for ZEN with PGI/NVIDIA and AMD AOCC compilers

ARMV7:

  • Fixed cpu detection on BSD-like systems

ARMV8:

  • Added preliminary support for Apple Vortex cpus
  • Added support for the Cavium ThunderX3T110 cpu
  • Fixed cpu detection on BSD-like systems
  • Fixed compilation in -std=C18 mode

IBM Z:

  • Added support for compiling with the clang compiler
  • Improved GEMM performance on Z14

Download OpenBLAS

md5sums:
dd211b73398383a44ebd75fffabd937a OpenBLAS-0.3.11.tar.gz
a76bfee7c125071bce6b24eae5b07468 OpenBLAS-0.3.11.zip
bad36be9fe4fe40372b06d326cfc5a2f OpenBLAS-0.3.11-x64.zip