OpenBLAS 0.3.8 version

common:

- LAPACK has been updated to 3.9.0 (plus patches up to January 2nd, 2020)
- CMAKE support has been improved in several areas including cross-compilation
- a thread race condition in the GEMM3M kernels was resolved
- the "generic" (plain C) gemm beta kernel used by many targets has been sped up
- an optimized version of the LAPACK trtrs functions has been added
- an incompatibilty between the LAPACK tests and the OpenBLAS implementation of XERBLA
  was resolved, removing the numerous warnings about wrong error exits in the former 
- support for NetBSD has been added
- support for compilation with g95 and non-GNU versions of ld has been improved
- compilation with (upcoming) gcc 10 is now supported

POWER:

- worked around miscompilation of several POWER8 and POWER9 kernels by
  older versions of gcc
- added support for big-endian POWER8 and for compilation on AIX
- corrected bugs in the big-endian support for PPC440 and PPC970
- DYNAMIC_ARCH support is now available in CMAKE builds as well

ARMV8:

- performance of DGEMM_BETA and SGEMM_NCOPY has been improved
- compilation for 32bit works again 
- performance of the RPCC function has been improved
- improved performance on small systems
- DYNAMIC_ARCH support is now available in CMAKE builds as well
- cross-compilation from OSX to IOS was simplified

x86_64:

- a new AVX512 DGEMM kernel was added and the AVX512 SGEMM kernel was
  significantly improved
- optimized AVX512 kernels for CGEMM and ZGEMM have been added
- AVX2 kernels for STRMM, SGEMM, and CGEMM have been significantly
  sped up and optimized CGEMM3M and ZGEMM3M kernels have been added 
- added support for QEMU virtual cpus
- a compilation problem with PGI and SUN compilers was fixed
- Intel "Goldmont plus" is now autodetected
- a potential crash on program exit on MS Windows has been fixed 
   

x86:

- an unwanted case sensitivity in the implementation of LSAME
  on older 32bit AMD cpus was fixed

IBM Z:

- Z15 is now supported as Z14
- DYNAMIC_ARCH is now available on ZARCH as well

md5sum
a433fb1295af968a468bbb1f1047d107 OpenBLAS-0.3.8.zip
a3cb780c2d79e3fe13af58a261308fdf OpenBLAS-0.3.8.tar.gz

OpenBLAS 0.3.7 version

common:

• having the gmake special variables TARGET_ARCH or TARGET_MACH defined no longer causes build failures in ctest or utest
• defining NO_AFFINITY or USE_TLS to zero in gmake builds no longer has the same effect as setting them to one
• a new test program was added to allow checking the library for thread safety
• a new option USE_LOCKING was added to ensure thread safety when OpenBLAS itself is built without multithreading but
  will be called from multiple threads.
• a build failure on Linux with glibc versions earlier than 2.5 was fixed
• a runtime error with CPU enumeration (and NO_AFFINITY not set) on glibc 2.6 was fixed
• NO_AFFINITY was added to the CMAKE options (and defaults to being active on Linux, as in the gmake builds)

x86_64

• the build-time logic for detection of AVX512 availability in the processor and compiler was fixed
• gmake builds on OSX now set the internal name of the library to libopenblas.0.dylib (consistent with CMAKE)
• the Haswell DGEMM kernel received a significant speedup through improved prefetch and load instructions
• performance of DGEMM, DTRMM, DTRSM and ZDOT on Zen/Zen2 was markedly increased by avoiding vpermpd instructions
• the SKYLAKEX (AVX512) DGEMM helper functions have now been disabled to fix remaining errors in DGEMM, DSYMM and DTRMM

POWER:

• added support for building on FreeBSD/powerpc64 and FreeBSD/ppc970
• added optimized kernels for POWER9 single and double precision complex BLAS3
• added optimized kernels for POWER9 SGEMM and STRMM

ARMV7:

• fixed the softfp implementations of xAMAX and IxAMAX
• removed the predefined -march= flags on both ARMV5 and ARMV6 as they were appropriate for only a subset of platforms

md5sum
195e79efdcae0e2c343a1a55a53836da OpenBLAS-0.3.7.zip
5cd4ff3891b66a59e47af2d14cde4056 OpenBLAS-0.3.7.tar.gz

OpenBLAS 0.3.6 version

common:

- the build tools now check that a given cpu TARGET is actually valid
- the build-time check of system features (c_check) has been made
  less dependent on particular perl features (this should mainly
  benefit building on Windows)
- several problems with ReLAPACK and its integration were fixed,
  including INTERFACE64 support and building a shared library
- building with CMAKE on BSD systems was improved
- a non-absolute SUM function was added based on the
  existing optimized code for ASUM
- CBLAS interfaces to the IxMIN and IxMAX functions were added
- a name clash between LAPACKE and BOOST headers was resolved
- CMAKE builds with OpenMP failed to include the appropriate getrf_parallel
  kernels
- a crash on thread (key) deletion with the USE_TLS=1 memory management
  option was fixed
- restored several earlier fixes, in particular for OpenMP performance,
  building on BSD, and calling fork on CYGWIN, which had inadvertently
  been dropped in the 0.3.3 rewrite of the memory management code.
  

POWER:

- single precision BLAS1/2 functions have received optimized POWER8 kernels
- POWER9 is now a separate target, with an optimized DGEMM/DTRMM kernel
- building on PPC970 systems under OSX Leopard or Tiger is now supported
- out-of-bounds memory accesses in the gemm_beta microkernels were fixed
- building a shared library on AIX is now supported for POWER6
- DYNAMIC_ARCH support has been added for POWER6 and newer

ARMV7:

- corrected xDOT behaviour with zero INC_X or INC_Y 
- a bug in the IMIN implementation made it return the result of IMAX

ARMV8:

- added support for HiSilicon TSV110 cpus
- the CMAKE build system now recognizes 32bit userspace on 64bit hardware 
- cross-compilation with CMAKE now works again
- a bug in the IMIN implementation made it return the result of IMAX
- ARMV8 builds with the BINARY=32 option are now automatically handled as ARMV7

x86_64:

- the AVX512 DGEMM kernel has been disabled again due to unsolved problems
- building with old versions of MSVC was fixed
- it is now possible to build a static library on Windows with CMAKE
- accessing environment variables on CYGWIN at run time was fixed
- the CMAKE build system now recognizes 32bit userspace on 64bit hardware
- Intel "Denverton" atom and Hygon "Dhyana" zen CPUs are now autodetected
- building for DYNAMIC_ARCH with a DYNAMIC_LIST of targets is now supported
  with CMAKE as well
- building for DYNAMIC_ARCH with GENERIC as the default target is now supported
- a buffer overflow in the SSE GEMM kernel for Intel Nano targets was fixed
- assembly bugs involving undeclared modification of input operands were fixed
  in the AXPY, DOT, GEMV, GER, SCAL, SYMV and TRSM microkernels for Nehalem, 
  Sandybridge, Haswell, Bulldozer and Piledriver. These would typically cause
  test failures or segfaults when compiled with recent versions of gcc from 8 onward.
- a similar bug was fixed in the blas_quickdivide code used to split workloads
  in most functions
- a bug in the IxMIN implementation for the GENERIC target made it return the result of IxMAX
- fixed building on SkylakeX systems when either the compiler or the (emulated) operating 
  environment does not support AVX512
- improved GEMM performance on ZEN targets

x86:

- build failures caused by the recently added checks for AVX512 were fixed
- an inline assembly bug involving undeclared modification of an input argument was
  fixed in the blas_quickdivide code used to split workloads in most functions
- a bug in the IMIN implementation for the GENERIC target made it return the result of IMAX

MIPS32:

- a bug in the IMIN implementation made it return the result of IMAX

IBM Z:

- optimized microkernels for single precicion BLAS1/2 functions have been added for Z13 and Z14

md5sum
67b3b45ec47d81a158ed219dddf6b69e OpenBLAS-0.3.6.zip
8a110a25b819a4b94e8a9580702b6495 OpenBLAS-0.3.6.tar.gz

OpenBLAS 0.3.5 version

common:

• loop unrolling in TRMV has been enabled again.
• A domain error in the thread workload distribution for SYRK
  has been fixed.
• gmake builds will now automatically add -fPIC to the build
  options if the platform requires it.
• a pthreads key leakage (and associate crash on dlclose) in
  the USE_TLS codepath was fixed.
• building of the utest cases on systems that do not provide
  an implementation of complex.h was fixed.

x86_64:

• the SkylakeX code was changed to compile on OSX.
• unwanted application of the -march=skylake-avx512 option
  to the common code parts of a DYNAMIC_ARCH build was fixed.
• improved performance of SGEMM for small workloads on Skylake X.
• performance of SGEMM and DGEMM was improved on Haswell.

ARMV8:

• a configuration error that broke the CNRM2 kernel was corrected.
• compilation of the GEMM kernels with CMAKE was fixed.
• DYNAMIC_ARCH builds are now available with CMAKE as well.
• using CMAKE for cross-compilation to the new cpu TARGETs
  introduced in 0.3.4 now works.

POWER:

• a problem in cpu autodetection for AIX has been corrected.

md5sum
ec0353a397ad3dbf2b28046b12cec1ae OpenBLAS-0.3.5.zip
579bda57f68ea6e9074bf5780e8620bb OpenBLAS-0.3.5.tar.gz

OpenBLAS 0.3.4 version

common:

• the new, experimental thread-local memory allocation had
  inadvertently been left enabled for gmake builds in 0.3.3
  despite the announcement. It is now disabled by default, and
  single-threaded builds will keep using the old allocator even
  if the USE_TLS option is turned on.
• OpenBLAS will now provide enough buffer space for at least 50
  threads by default.
• The output of openblas_get_config() now contains the version
  number.
• A serious thread safety bug in GEMV operation with small M and
  large N size has been fixed.
• The code will now automatically call blas_thread_init after a
  fork if needed before handling a call to openblas_set_num_threads
• Accesses to parallelized level3 functions from multiple callers
  are now serialized to avoid thread races (unless using OpenMP).
  This should provide better performance than the known-threadsafe
  (but non-default) USE_SIMPLE_THREADED_LEVEL3 option.
• When building LAPACK with gfortran, -frecursive is now (again)
  enabled by default to ensure correct behaviour.
• The OpenBLAS version cblas.h now supports both CBLAS_ORDER and
  CBLAS_LAYOUT as the name of the matrix row/column order option.
• Externally set LDFLAGS are now passed through to the final compile/link
  steps to facilitate setting platform-specific linker flags.
• A potential race condition during the build of LAPACK (that would
  usually manifest itself as a failure to build TESTING/MATGEN) has been
  fixed.
• xHEMV has been changed to stay single-threaded for small input sizes
  where the overhead of multithreading exceeds any possible gains
• CSWAP and ZSWAP have been limited to a single thread except on ARMV8 or
  ThunderX hardware with sizable input.
• Linker flags for the PGI compiler have been updated
• Behaviour of AXPY with zero increments is now handled in the C interface,
  correcting the result on at least Intel Atom.
• The result matrix from calling SGELSS with an all-zero input matrix is
  now zeroed completely.

x86_64:

• Autodetection of AMD Ryzen2 has been fixed (again).
• CMAKE builds now support labeling of an INTERFACE64=1 build of
  the library with the _64 suffix.
• AVX512 version of DGEMM has been added and the AVX512 SGEMM kernel
  has been sped up by rewriting with C intrinsics
• Fixed compilation on RHEL5/CENTOS5 (issue with typename __WAIT_STATUS)

POWER:

• added support for building on AIX (with gcc and GNU tools from AIX Toolbox).
• CPU type detection has been implemented for AIX.
• CPU type detection has been fixed for NETBSD.

MIPS64:

• AXPY on LOONGSON3A has been corrected to pass "zero increment" utest.
• DSDOT on LOONGSON3A has been fixed.
• the SGEMM microkernel has been hardened against potential data loss.

ARMV8:

• DYNAMic_ARCH support is now available for 64bit ARM
• cross-compiling for ARMV8 under iOS now works.
• cpu-specific code has been rearranged to make better use of both
  hardware commonalities and model-specific compiler optimizations.
• XGENE1 has been removed as a TARGET, superseded by the improved generic
  ARMV8 support.

ARMV7:

• Older assembly mnemonics have been converted to UAL form to allow
  building with clang 7.0
• Cross compiling LAPACKE for Android has been fixed again (broken by
  update to LAPACK 3.7.0 some while ago).

md5sum
59495ec36d31cae9cf82937515e8c0ad OpenBLAS-0.3.4.zip
e4d940c2983c547da212bee6a491589e OpenBLAS-0.3.4.tar.gz

OpenBLAS 0.3.3 version

common:

• thread memory allocation has been switched back to the method
  used before version 0.3.1 due to unexpected problems caused by
  the new code under some circumstances. A new compile-time option
  USE_TLS has been added to allow enabling the new code instead,
  and it is hoped that this can become the default again in the next version.
• LAPACK PR272 has been integrated, which fixes spurious errors
  in DSYEVR and related functions caused by missing conversion
  from ILAENV to ILAENV_2STAGE in several _2stage routines.
• the cmake-generated OpenBLASConfig.cmake now uses correct case
  for the name of the library
• added support for Haiku OS

x86_64:

• added AVX512 implementations of SDOT, DDOT, SAXPY, DAXPY,
  DSCAL, DGEMVN and DSYMVL
• added a workaround for a cygwin issue that prevented compilation
  of AVX512 code

IBM Z:

• added autodetection of Z14
• fixed TRMM errors in the generic target

md5sum
710a28a75db0e0e57496b5d6db336fb2 OpenBLAS-0.3.3.zip
30e2f8d7317e84dde5a37152173848f1 OpenBLAS-0.3.3.tar.gz

OpenBLAS 0.3.2 version

common:

• fixes for regressions caused by the rewrite of the thread initialization code in 0.3.1

x86_64:

• added autodetection of AMD Ryzen 2
• fixed build with older versions of MSVC

Power:

• fixed cpu autodetection for the BSDs

mips64:

• fixed utest errors in AXPY, DSDOT, ROT and SWAP

md5sum
c0b37314832b471e55a39889fc02568b OpenBLAS-0.3.2.zip
686f30a234f81fd768dbad5bbd41ca4f OpenBLAS-0.3.2.tar.gz

OpenBLAS 0.3.1 version

common:

• rewritten thread initialization code with significantly reduced overhead
• added CBLAS interfaces to the IxAMIN BLAS extension functions
• fixed the lapack-test target
• CMAKE builds now create an OpenBLASConfig.cmake file
• ZAXPY now uses a single thread for small input sizes
• the LAPACK code was updated from Reference-LAPACK/lapack#253

POWER:

• corrected CROT and ZROT behaviour with zero INC_X

ARMV7:

• corrected xDOT behaviour with zero INC_X or INC_Y

x86_64:

• retired some older targets of DYNAMIC_ARCH builds to a new option DYNAMIC_OLDER,
  this affects PENRYN,DUNNINGTON,OPTERON,OPTERON_SSE3,BOBCAT,ATOM and NANO
  (which will still be supported via the slower PRESCOTT kernels when this option is not set)
• added an option DYNAMIC_LIST that (used in conjunction with DYNAMIC_ARCH) allows
  to specify the list of x86_64 targets to include. Any target not on the list will be supported by
  the Sandybridge or Nehalem kernels if available, or by Prescott.
• improved SWITCH_RATIO on Haswell for increased GEMM throughput
• added initial support for Intel Skylake X, including an AVX512 SGEMM kernel
• added autodetection of Intel Cannon Lake series as Skylake X
• added a default L2 cache size for hypervisors that return zero here (Chromebook)
• fixed a name clash with recent Windows10 headers that broke the build with (at least)
  recent mingw from MSYS2
• fixed a link error in mixed clang/gfortran builds with OpenMP
• updated the OSX deployment target to 10.8
• switched on parallel make for builds on MS Windows by default

x86:

• fixed SSWAP and DSWAP behaviour with zero INC_X and INC_Y

md5sum
f6180b15f9b29252e718afc6f7c55c5f OpenBLAS-0.3.1.zip
b35f77d7ea723684333145b9b10656ec OpenBLAS-0.3.1.tar.gz

OpenBLAS 0.3.0 version

common:

* fixed some more thread race and locking bugs
* added preliminary support for calling an OpenMP build of the library from multiple threads
* removed performance impact of thread locks added in 0.2.20 on OpenMP code
* general code cleanup 
* optimized DSDOT implementation
* improved thread distribution for GEMM
* corrected IMATCOPY/OMATCOPY implementation
* fixed out-of-bounds accesses in the multithreaded xBMV/xPMV and SYMV implementations
* cmake build improvements
* pkgconfig file now contains build options
* openblas_get_config() now reports USE_OPENMP and NUM_THREADS settings used for the build
* corrections and improvements for systems with more than 64 cpus
* LAPACK code updated to 3.8.0 including later fixes
* added ReLAPACK, a recursive implementation of several LAPACK functions
* Rewrote ROTMG to handle cases that the netlib code failed to address
* Disabled (broken) multithreading code for xTRMV
* corrected prototypes of complex CBLAS functions to make our cblas.h match the generally accepted standard
* shared memory access failures on startup are now handled more gracefully
* restored utests from earlier releases (and made them pass on all affected systems)

SPARC:

* several fixes for cpu autodetection

POWER:

* corrected vector register overwriting in several Power8 kernels
* optimized additional BLAS functions

ARM:

* added support for CortexA53 and A72 
* added autodetection for ThunderX2T99
* made most optimized kernels the default for generic ARMv8 targets 

x86_64:

* parallelized DDOT kernel for Haswell
* changed alignment directives in assembly kernels to boost performance on OSX
* fixed register handling in the GEMV microkernels (bug exposed by gcc7)
* added support for building on OpenBSD and Dragonfly 
* updated compiler options to work with Intel release 2018
* support fully optimized build with clang/flang on Microsoft Windows
* fixed building on AIX

IBM Z:

* added optimized BLAS 1/2 functions

MIPS:

* fixed cpu autodetection helper code
* added mips32 1004K cpu (Mediatek MT7621 and similar SoC)
* added mips64 I6500 cpu

md5sum
4330647cb9755d4d993b27e46b6e7b53 OpenBLAS-0.3.0.zip
42cde2c1059a8a12227f1e6551c8dbd2 OpenBLAS-0.3.0.tar.gz

OpenBLAS 0.2.20 version

Version 0.2.20
24-Jul-2017

common:

    * Improved CMake support
    * Fixed several thread race and locking bugs
    * Fixed default LAPACK optimization level
    * Updated LAPACK to 3.7.0
    * Added ReLAPACK (https://github.com/HPAC/ReLAPACK), make BUILD_RELAPACK=1

POWER:

    * Optimizations for Power9
    * Fixed several Power8 assembly bugs

ARM:

    * New optimized Vulcan and ThunderX2T99 targets
    * Support for ARMV7 SOFT_FP ABI  (make ARM_SOFTFP_ABI=1)
    * Detect all cpu cores including offline ones
    * Fix compilation with CLANG
    * Support building a shared library for Android

MIPS:

    * Fixed several threading issues
    * Fix compilation with CLANG

x86_64:

    * Detect Intel Bay Trail and Apollo Lake
    * Detect Intel Sky Lake and Kaby Lake
    * Detect Intel Knights Landing
    * Detect AMD A8, A10, A12 and Ryzen
    * Support 64bit builds with Visual Studio
    * Fix building with Intel and PGI compilers
    * Fix building with MINGW and TDM-GCC
    * Fix cmake builds for Haswell and related cpus
    * Fix building for Sandybridge with CLANG 3.9
    * Add support for the FLANG compiler

IBM Z:

    * New target z13 with BLAS3 optimizations

md5sum
e0d47385423944cbd14bcb9e58930ff9 OpenBLAS-0.2.20.zip
48637eb29f5b492b91459175dcc574b1 OpenBLAS-0.2.20.tar.gz