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OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
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Merge pull request #554 from wernsaar/develop

added benchmarks for zgeru and cgeru
latest commit e42652f772
@xianyi authored
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benchmark add benchmarks for zgeru and cgeru
ctest added GEMM3M tests
driver Refs #478, #482. Fix segfault bug for gemv_t with MAX_ALLOC_STACK flag.
exports Refs #520. Fixed ONLY_CBLAS=1 compiling bug on OSX.
interface gemv: Ensure stack buffer is large enough to handle memory alignment
kernel bugfixes: replaced int with BLASLONG
lapack-netlib added optimized dsymv kernels for haswell
lapack Remove all trailing whitespace except lapack-netlib
reference Remove all trailing whitespace except lapack-netlib
test bugfix for GEMM3M functions
utest Add test for drotmg bug fixed by 692b14c
.gitignore .gitignore: add some more entries concerned with kernel
.travis.yml Remove all trailing whitespace except lapack-netlib
BACKERS.md Added backers.
CONTRIBUTORS.md Fix issue #508
Changelog.txt Update the doc for 0.2.14.
GotoBLAS_00License.txt rename documents in GotoBLAS.
GotoBLAS_01Readme.txt Remove all trailing whitespace except lapack-netlib
GotoBLAS_02QuickInstall.txt Remove all trailing whitespace except lapack-netlib
GotoBLAS_03FAQ.txt Remove all trailing whitespace except lapack-netlib
GotoBLAS_04FAQ.txt rename documents in GotoBLAS.
GotoBLAS_05LargePage.txt Correct typo /proc/ instead of /pros/
GotoBLAS_06WeirdPerformance.txt Remove all trailing whitespace except lapack-netlib
LICENSE Update organization info.
Makefile added optimized dsymv kernels for haswell
Makefile.alpha Remove all trailing whitespace except lapack-netlib
Makefile.arm Add cortex-a9 and cortex-a15 targets.
Makefile.arm64 added experimental support for ARMV8
Makefile.generic Respect user's LDFLAGS
Makefile.ia64 Remove all trailing whitespace except lapack-netlib
Makefile.install fix mingw install
Makefile.mips64 Import GotoBLAS2 1.13 BSD version codes.
Makefile.power Remove all trailing whitespace except lapack-netlib
Makefile.prebuild get rid of the generated cblas_noconst.h file
Makefile.rule Enable MAX_STACK_ALLOC by default.
Makefile.sparc Remove all trailing whitespace except lapack-netlib
Makefile.system Detect the wrong combined flags of USE_OPENMP=1 and USE_THREAD=0.
Makefile.tail Remove all trailing whitespace except lapack-netlib
Makefile.x86 Remove all trailing whitespace except lapack-netlib
Makefile.x86_64 Remove all trailing whitespace except lapack-netlib
README.md added target processor STEAMROLLER
TargetList.txt Add ARM targets.
c_check Fix compiling bug for ARM with setting BINARY.
cblas.h Add ATLAS-style ?geadd function
cblas_noconst.h Add ATLAS-style ?geadd function
common.h Refs #478, #482. Fix segfault bug for gemv_t with MAX_ALLOC_STACK flag.
common_alpha.h Refs #262. Fixed compatibility issues of GNU stack markings with Path…
common_arm.h added optimized dsymv kernels for haswell
common_arm64.h Update organization info.
common_c.h Add ATLAS-style ?geadd function
common_d.h Add ATLAS-style ?geadd function
common_ia64.h Remove all trailing whitespace except lapack-netlib
common_interface.h Add ATLAS-style ?geadd function
common_lapack.h Import GotoBLAS2 1.13 BSD version codes.
common_level1.h Remove all trailing whitespace except lapack-netlib
common_level2.h Remove all trailing whitespace except lapack-netlib
common_level3.h Add ATLAS-style ?geadd function
common_linux.h Remove all trailing whitespace except lapack-netlib
common_macro.h Add ATLAS-style ?geadd function
common_mips64.h Update organization info.
common_param.h Add ATLAS-style ?geadd function
common_power.h Remove all trailing whitespace except lapack-netlib
common_q.h Import GotoBLAS2 1.13 BSD version codes.
common_reference.h Update organization info.
common_s.h Add ATLAS-style ?geadd function
common_sparc.h Remove all trailing whitespace except lapack-netlib
common_thread.h Remove all trailing whitespace except lapack-netlib
common_x.h Import GotoBLAS2 1.13 BSD version codes.
common_x86.h added target processor STEAMROLLER
common_x86_64.h added target processor STEAMROLLER
common_z.h Refs #509. Fixed geadd building bug with DYNAMIC_ARCH=1.
cpuid.S Remove all trailing whitespace except lapack-netlib
cpuid.h added target processor STEAMROLLER
cpuid_alpha.c Remove all trailing whitespace except lapack-netlib
cpuid_arm.c Fix cortex-a15 detecting bug.
cpuid_arm64.c # The first commit's message is:
cpuid_ia64.c Remove all trailing whitespace except lapack-netlib
cpuid_mips.c Update organization info.
cpuid_power.c Remove all trailing whitespace except lapack-netlib
cpuid_sparc.c refs #55. Added DTB_ENTRIES into dynamic arch setting parameters. Now…
cpuid_x86.c Refs #529. Support Intel Broadwell by Haswell kernels.
ctest.c Refs #355. Fixed ARM detection bug.
ctest1.c Import GotoBLAS2 1.13 BSD version codes.
ctest2.c Import GotoBLAS2 1.13 BSD version codes.
f_check fix fortran compiler detection on FreeBSD
ftest.f Remove all trailing whitespace except lapack-netlib
ftest2.f Import GotoBLAS2 1.13 BSD version codes.
ftest3.f Remove all trailing whitespace except lapack-netlib
getarch.c Add ARM targets.
getarch_2nd.c Remove all trailing whitespace except lapack-netlib
l1param.h Added BULLDOZER target. So far it uses barcelona kernels.
l2param.h Support AMD Piledriver by bulldozer kernels.
lapack-devel.log Remove all trailing whitespace except lapack-netlib
make.inc added optimized dsymv kernels for haswell
openblas_config_template.h Fixed #315. Added OPENBLAS_ prefix to openblas_config.h.
param.h Add cortex-a9 and cortex-a15 targets.
quickbuild.32bit Import GotoBLAS2 1.13 BSD version codes.
quickbuild.64bit Import GotoBLAS2 1.13 BSD version codes.
quickbuild.win32 Added the tip for Windows.
quickbuild.win64 Refs #63. delete prefix for mingw64 toolchain.
segfaults.patch Remove all trailing whitespace except lapack-netlib
symcopy.h Remove all trailing whitespace except lapack-netlib
version.h Update organization info.

README.md

OpenBLAS

Build Status

Introduction

OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.

Please read the documents on OpenBLAS wiki pages http://github.com/xianyi/OpenBLAS/wiki.

Binary Packages

We provide binary packages for the following platform.

  • Windows x86/x86_64

You can download them from file hosting on sourceforge.net.

Installation from Source

Download from project homepage. http://xianyi.github.com/OpenBLAS/

Or, check out codes from git://github.com/xianyi/OpenBLAS.git

Normal compile

  • type "make" to detect the CPU automatically. or
  • type "make TARGET=xxx" to set target CPU, e.g. "make TARGET=NEHALEM". The full target list is in file TargetList.txt.

Cross compile

Please set CC and FC with the cross toolchains. Then, set HOSTCC with your host C compiler. At last, set TARGET explicitly.

Examples:

On X86 box, compile this library for loongson3a CPU.

make BINARY=64 CC=mips64el-unknown-linux-gnu-gcc FC=mips64el-unknown-linux-gnu-gfortran HOSTCC=gcc TARGET=LOONGSON3A

On X86 box, compile this library for loongson3a CPU with loongcc (based on Open64) compiler.

make CC=loongcc FC=loongf95 HOSTCC=gcc TARGET=LOONGSON3A CROSS=1 CROSS_SUFFIX=mips64el-st-linux-gnu-   NO_LAPACKE=1 NO_SHARED=1 BINARY=32

Debug version

make DEBUG=1

Install to the directory (optional)

Example:

make install PREFIX=your_installation_directory

The default directory is /opt/OpenBLAS

Support CPU & OS

Please read GotoBLAS_01Readme.txt

Additional support CPU:

x86/x86-64:

  • Intel Xeon 56xx (Westmere): Used GotoBLAS2 Nehalem codes.
  • Intel Sandy Bridge: Optimized Level-3 and Level-2 BLAS with AVX on x86-64.
  • Intel Haswell: Optimized Level-3 and Level-2 BLAS with AVX2 and FMA on x86-64.
  • AMD Bobcat: Used GotoBLAS2 Barcelona codes.
  • AMD Bulldozer: x86-64 ?GEMM FMA4 kernels. (Thank Werner Saar)
  • AMD PILEDRIVER: Uses Bulldozer codes with some optimizations.
  • AMD STEAMROLLER: Uses Bulldozer codes with some optimizations.

MIPS64:

  • ICT Loongson 3A: Optimized Level-3 BLAS and the part of Level-1,2.
  • ICT Loongson 3B: Experimental

ARM:

  • ARMV6: Optimized BLAS for vfpv2 and vfpv3-d16 ( e.g. BCM2835, Cortex M0+ )
  • ARMV7: Optimized BLAS for vfpv3-d32 ( e.g. Cortex A8, A9 and A15 )

ARM64:

  • ARMV8: Experimental

Support OS:

Usages

Link with libopenblas.a or -lopenblas for shared library.

Set the number of threads with environment variables.

Examples:

export OPENBLAS_NUM_THREADS=4

or

export GOTO_NUM_THREADS=4

or

export OMP_NUM_THREADS=4

The priorities are OPENBLAS_NUM_THREADS > GOTO_NUM_THREADS > OMP_NUM_THREADS.

If you compile this lib with USE_OPENMP=1, you should set OMP_NUM_THREADS environment variable. OpenBLAS ignores OPENBLAS_NUM_THREADS and GOTO_NUM_THREADS with USE_OPENMP=1.

Set the number of threads on runtime.

We provided the below functions to control the number of threads on runtime.

void goto_set_num_threads(int num_threads);

void openblas_set_num_threads(int num_threads);

If you compile this lib with USE_OPENMP=1, you should use the above functions, too.

Report Bugs

Please add a issue in https://github.com/xianyi/OpenBLAS/issues

Contact

ChangeLog

Please see Changelog.txt to obtain the differences between GotoBLAS2 1.13 BSD version.

Troubleshooting

  • Please read Faq at first.
  • Please use gcc version 4.6 and above to compile Sandy Bridge AVX kernels on Linux/MingW/BSD.
  • Please use Clang version 3.1 and above to compile the library on Sandy Bridge microarchitecture. The Clang 3.0 will generate the wrong AVX binary code.
  • The number of CPUs/Cores should less than or equal to 256. On Linux x86_64(amd64), there is experimental support for up to 1024 CPUs/Cores and 128 numa nodes if you build the library with BIGNUMA=1.
  • OpenBLAS does not set processor affinity by default. On Linux, you can enable processor affinity by commenting the line NO_AFFINITY=1 in Makefile.rule. But this may cause the conflict with R parallel.
  • On Loongson 3A. make test would be failed because of pthread_create error. The error code is EAGAIN. However, it will be OK when you run the same testcase on shell.

Contributing

  1. Check for open issues or open a fresh issue to start a discussion around a feature idea or a bug.
  2. Fork the OpenBLAS repository to start making your changes.
  3. Write a test which shows that the bug was fixed or that the feature works as expected.
  4. Send a pull request. Make sure to add yourself to CONTRIBUTORS.md.

Donation

Please read this wiki page.

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