2 ====================================================================
7 - imported improvements and bugfixes from Reference-LAPACK 3.9.1
8 - imported LAPACKE interface fixes from Reference-LAPACK PRs 534 + 537
9 - fixed a problem in the cpu detection of 0.3.14 that prevented cross-compilation
10 - fixed a sequence problem in the generation of softlinks to the library in GMAKE
13 - fixed compilation on RISCV (missing entry in getarch)
14 - fixed a potential division by zero in CROTG and ZROTG
17 - fixed LAPACK testsuite failures seen with the NVIDIA HPC compiler
18 - improved CGEMM, DGEMM and ZGEMM performance on POWER10
19 - added an optimized ZGEMV kernel for POWER10
20 - fixed a potential division by zero in CROTG and ZROTG
23 - added support for Intel Control-flow Enforcement Technology (CET)
24 - reverted the DOMATCOPY_RT code to the generic C version
25 - fixed a bug in the AVX512 SGEMM kernel introduced in 0.3.14
26 - fixed misapplication of -msse flag to non-SSE cpus in DYNAMIC_ARCH
27 - added support for compilation of the benchmarks on older OSX versions
28 - fix propagation of the NO_AVX512 option in CMAKE builds
29 - fix compilation of the AVX512 SGEMM kernel with clang-cl on Windows
30 - fixed compilation of the CTESTs with INTERFACE64=1 (random faults on OSX)
31 - corrected the Haswell DROT kernel to require AVX2/FMA3 rather than AVX512
34 - fixed a potential division by zero in CROTG and ZROTG
35 - fixed a potential overflow in IMATCOPY/ZIMATCOPY and the CTESTs
38 - fixed spurious reads outside the array in the SGEMM tcopy macro
39 - fixed a potential division by zero in CROTG and ZROTG
40 - fixed a segmentation fault in DYNAMIC_ARCH builds (reappeared in 0.3.14)
43 - fixed a potential division by zero in CROTG and ZROTG
44 - fixed a potential overflow in IMATCOPY/ZIMATCOPY and the CTESTs
47 - fixed a potential division by zero in CROTG and ZROTG
50 - fixed a potential division by zero in CROTG and ZROTG
52 ====================================================================
57 * Fixed a race condition on thread shutdown in non-OpenMP builds
58 * Fixed custom BUFFERSIZE option getting ignored in gmake builds
59 * Fixed CMAKE compilation of the TRMM kernels for GENERIC platforms
60 * Added CBLAS interfaces for CROTG, ZROTG, CSROT and ZDROT
61 * Improved performance of OMATCOPY_RT across all platforms
62 * Changed perl scripts to use env instead of a hardcoded /usr/bin/perl
63 * Fixed potential misreading of the GCC compiler version in the build scripts
64 * Fixed convergence problems in LAPACK complex GGEV/GGES (Reference-LAPACK #477)
65 * Reduced the stacksize requirements for running the LAPACK testsuite (Reference-LAPACK #335)
68 * Fixed compilation on RISCV (missing entry in getarch)
71 * Fixed compilation for DYNAMIC_ARCH with clang and with old gcc versions
72 * Added support for compilation on FreeBSD/ppc64le
73 * Added optimized POWER10 kernels for SSCAL, DSCAL, CSCAL, ZSCAL
74 * Added optimized POWER10 kernels for SROT, DROT, CDOT, SASUM, DASUM
75 * Improved SSWAP, DSWAP, CSWAP, ZSWAP performance on POWER10
76 * Improved SCOPY and CCOPY performance on POWER10
77 * Improved SGEMM and DGEMM performance on POWER10
78 * Added support for compilation with the NVIDIA HPC compiler
81 * Added an optimized bfloat16 GEMM kernel for Cooperlake
82 * Added CPUID autodetection for Intel Rocket Lake and Tiger Lake cpus
83 * Improved the performance of SASUM,DASUM,SROT,DROT on AMD Ryzen cpus
84 * Added support for compilation with the NAG Fortran compiler
85 * Fixed recognition of the AMD AOCC compiler
86 * Fixed compilation for DYNAMIC_ARCH with clang on Windows
87 * Added support for running the BLAS/CBLAS tests on Windows
88 * Fixed signatures of the tls callback functions for Windows x64
89 * Fixed various issues with fma intrinsics support handling
92 * Added support for embedded Cortex M targets via a new option EMBEDDED
95 * Fixed the THUNDERX2T99 and NEOVERSEN1 DNRM2/ZNRM2 kernels for inputs with Inf
96 * Added support for the DYNAMIC_LIST option
97 * Added support for compilation with the NVIDIA HPC compiler
98 * Added support for compiling with the NAG Fortran compiler
100 ====================================================================
105 * Added a generic bfloat16 SBGEMV kernel
106 * Fixed a potentially severe memory leak after fork in OpenMP builds
107 that was introduced in 0.3.12
108 * Added detection of the Fujitsu Fortran compiler
109 * Added detection of the (e)gfortran compiler on OpenBSD
110 * Added support for overriding the default name of the library independently
111 from symbol suffixing in the gmake builds (already supported in cmake)
114 * Added a RISC V port optimized for C910V
117 * Added optimized POWER10 kernels for SAXPY, CAXPY, SDOT, DDOT and DGEMV_N
118 * Improved DGEMM performance on POWER10
119 * Improved STRSM and DTRSM performance on POWER9 and POWER10
120 * Fixed segmemtation faults in DYNAMIC_ARCH builds
121 * Fixed compilation with the PGI compiler
124 * Fixed compilation of kernels that require SSE2 intrinsics since 0.3.12
127 * Added an optimized bfloat16 SBGEMV kernel for SkylakeX and Cooperlake
128 * Improved the performance of SASUM and DASUM kernels through parallelization
129 * Improved the performance of SROT and DROT kernels
130 * Improved the performance of multithreaded xSYRK
131 * Fixed OpenMP builds that use the LLVM Clang compiler together with GNU gfortran
132 (where linking of both the LLVM libomp and GNU libgomp could lead to lockups or
134 * Fixed miscompilations by old gcc 4.6
135 * Fixed misdetection of AVX2 capability in some Sandybridge cpus
136 * Fixed lockups in builds combining DYNAMIC_ARCH with TARGET=GENERIC on OpenBSD
139 * Fixed segmemtation faults in DYNAMIC_ARCH builds
142 * Improved kernels for Loongson 3R3 ("3A") and 3R4 ("3B") models, including MSA
143 * Fixed bugs in the MSA kernels for CGEMM, CTRMM, CGEMV and ZGEMV
144 * Added handling of zero increments in the MSA kernels for SSWAP and DSWAP
145 * Added DYNAMIC_ARCH support for MIPS64 (currently Loongson3R3/3R4 only)
148 * Fixed building 32 and 64 bit SPARC kernels with the SolarisStudio compilers
150 ====================================================================
155 * Fixed missing BLAS/LAPACK functions (inadvertently dropped during
156 the build system restructuring)
157 * Fixed argument conversion macro in LAPACKE_zgesvdq (LAPACK #458)
160 * Added optimized SCOPY/CCOPY kernels for POWER10
161 * Increased and unified the default size of the GEMM BUFFER
162 * Fixed building for POWER10 in DYNAMIC_ARCH mode
163 * POWER10 compatibility test now checks binutils version as well
164 * Cleaned up compiler warnings
167 * corrected compiler version checks for AVX2 compatibility
168 * added compiler option -mavx2 for building with flang
169 * fixed direct SGEMM pathway for small matrix sizes (broken by
170 the code refactoring in 0.3.11)
171 * fixed unhandled partial register clobbers in several kernels
172 for AXPY,DOT,GEMV_N and GEMV_T flagged by gcc10 tree-vectorizer
175 * improved Apple Vortex support to include cross-compiling
177 ====================================================================
183 the newly added BFLOAT16 functions were renamed to use the
184 letter "B" instead of "H" to avoid potential confusion with
185 the IEEE "half precision float" type, i.e. the 0.3.10
186 SHGEMM is now SBGEMM and the corresponding build option
187 was changed from "BUILD_HALF" to "BUILD_BFLOAT16".
188 * Reduced the default BLAS3_MEM_ALLOC_THRESHOLD (used as an upper
189 limit for placing temporary arrays on the stack) to be compatible
190 with a stack size of 1mb (as imposed by the JAVA runtime library)
191 * Added mixed-precision dot function SBDOT and utility functions
192 shstobf16, shdtobf16, sbf16tos and dbf16tod to convert between
193 single or double precision float arrays and bfloat16 arrays
194 * Fixed prototypes of LAPACK_?ggsvp and LAPACK_?ggsvd functions
196 * Fixed underflow and rounding errors in LAPACK SLANV2 and DLANV2
197 (causing miscalculations in e.g. SHSEQR/DHSEQR, LAPACK issue #263)
198 * Fixed workspace calculation in LAPACK ?GELQ (LAPACK issue #415)
199 * Fixed several bugs in the LAPACK testsuite
200 * Improved performance of TRMM and TRSM for certain problem sizes
201 * Fixed infinite recursions and workspace miscalculations in ReLAPACK
202 * CMAKE builds no longer require pkg-config for creating the .pc file
203 * Makefile builds no longer misread NO_CBLAS=0 or NO_LAPACK=0 as
204 enabling these options
205 * Fixed detection of gfortran when invoked through an mpi wrapper
206 * Improve thread reinitialization performance with OpenMP after a fork
207 * Added support for building only the subset of the library required
208 for a particular precision by specifying BUILD_SINGLE, BUILD_DOUBLE
209 * Optional function name prefixes and suffixes are now correctly
210 reflected in the generated cblas.h
211 * Added CMAKE build support for the LAPACK and multithreading tests
214 * Added optimized support for POWER10
215 * Added support for compiling for POWER8 in 32bit mode
216 * Added support for compilation with LLVM/clang
217 * Added support for compilation with NVIDIA/PGI compilers
218 * Fixed building on big-endian POWER8
219 * Fixed miscompilation of ZDOTC by gcc10
220 * Fixed alignment errors in the POWER8 SAXPY kernel
221 * Improved CPU detection on AIX
222 * Supported building with older compilers on POWER9
225 * Added support for Intel Cooperlake
226 * Added autodetection of AMD Renoir/Matisse/Zen3 cpus
227 * Added autodetection of Intel Comet Lake cpus
228 * Reimplemented ?sum, ?dot and daxpy using universal intrinsics
229 * Reset the fpu state before using the fpu on Windows as a workaround
230 for a problem introduced in Windows 10 build 19041 (a.k.a. SDK 2004)
231 * Fixed potentially undefined behaviour in the dot and gemv_t kernels
232 * Fixed a potential segmentation fault in DYNAMIC_ARCH builds
233 * Fixed building for ZEN with PGI/NVIDIA and AMD AOCC compilers
236 * Fixed cpu detection on BSD-like systems
239 * Added preliminary support for Apple Vortex cpus
240 * Added support for the Cavium ThunderX3T110 cpu
241 * Fixed cpu detection on BSD-like systems
242 * Fixed compilation in -std=C18 mode
245 * Added support for compiling with the clang compiler
246 * Improved GEMM performance on Z14
248 ====================================================================
253 * Improved thread locking behaviour in blas_server and parallel getrf
254 * Imported bugfix 394 from LAPACK (spurious reference to "XERBL"
255 due to overlong lines)
256 * Imported bugfix 403 from LAPACK (compile option "recursive" required
257 for correctness with Intel and PGI)
258 * Imported bugfix 408 from LAPACK (wrong scaling in ZHEEQUB)
259 * Imported bugfix 411 from LAPACK (infinite loop in LARGV/LARTG/LARTGP)
260 * Fixed mismatches between BUFFERSIZE and GEMM_UNROLL parameters that
261 could lead to crashes at large matrix sizes
262 * Restored internal soname in dynamic libraries on FreeBSD and Dragonfly
263 * Added API (openblas_setaffinity) to set the thread affinity on Linux
264 * Added initial infrastructure for half-precision floating point
265 (bfloat16) support with a generic implementation of SHGEMM
266 * Added CMAKE build system support for building the cblas_Xgemm3m
268 * Fixed CMAKE support for building in a path with embedded spaces
269 * Fixed CMAKE (non)handling of NO_EXPRECISION and MAX_STACK_ALLOC
270 * Fixed GCC version detection in the Makefiles
271 * Allowed overriding the names of AR, AS and LD in Makefile builds
274 * Fixed big-endian POWER8 ELFv2 builds on FreeBSD
275 * Fixed GCC version checks and DYNAMIC_ARCH builds on POWER9
276 * Fixed CMAKE build support for POWER9
277 * fixed a potential race condition in the thread buffer allocation
278 * Worked around LAPACK test failures on PPC G4
281 * Fixed a potential race condition in the thread buffer allocation
282 * Added support for MIPS 24K/24KE family based on P5600 kernels
285 * fixed a potential race condition in the thread buffer allocation
286 * Added TARGET=GENERIC
289 * Fixed a race condition in the thread buffer allocation
292 * Fixed a race condition in the thread buffer allocation
293 * Fixed zero initialisation in the assembly for SGEMM and DGEMM BETA
294 * Improved performance of the ThunderX2 DAXPY kernel
295 * Added an optimized SGEMM kernel for Cortex A53
296 * Fixed Makefile support for INTERFACE64 (8-byte integer)
299 * Fixed a syntax error in the CMAKE setup for SkylakeX
300 * Improved performance of STRSM on Haswell, SkylakeX and Ryzen
301 * Improved SGEMM performance on SGEMM for workloads with ldc a
303 * Improved DGEMM performance on Skylake X
304 * Fixed unwanted AVX512-dependency of SGEMM in DYNAMIC_ARCH
305 builds created on SkylakeX
306 * Removed data alignment requirement in the SSE2 copy kernels
307 that could cause spurious crashes
308 * Added a workaround for an optimizer bug in AppleClang 11.0.3
309 * Fixed LAPACK test failures due to wrong options for Intel Fortran
310 * Fixed compilation and LAPACK test results with recent Flang
312 * Fixed DYNAMIC_ARCH builds with CMAKE on OS X
313 * Fixed missing exports of cblas_i?amin, cblas_i?min, cblas_i?max,
314 cblas_?sum, cblas_?gemm3m in the shared library on OS
315 * Fixed reporting of cpu name in DYNAMIC_ARCH builds (would sometimes
316 show the name of an older generation chip supported by the same kernels)
319 * Improved performance of SGEMM/STRMM and DGEMM/DTRMM on Z14
321 ====================================================================
326 * Fixed a miscompilation of the GETRF functions with CMAKE
327 * Imported bugfix 390 from LAPACK (missing NaN propagation in xCOMBSSQ)
328 * The size of the memory buffer used for splitting GEMM tasks across
329 multiple threads can now be configured in the build system.
332 * Fixed several compilation problems related to endianness
333 and ELF version on POWER8 and POWER9
334 * Fixed use of the absolute value IAMIN/IAMAX instead of IMIN/IMAX
335 * Fixed a race condition in the level3 blas code
338 * Fixed use of the absoltute value IAMIN/IAMAX instead of IMIN/IMAX
341 * Fixed a race condition in the level3 blas code
342 * Fixed compilation on Android
344 * Added support for Ampere EMAG8180
345 * Added support for Neoverse N1
346 * Improved performance of the blas_lock function
347 * Fixed a race condition in the level3 blas code
348 * Fixed a performance regression on TSV110-based servers
351 * Fixed a long-standing error with undeclared register overwrites
352 in the DSCAL microkernel for HASWELL,SKYLAKEX and ZEN
353 * Fixed a long-standing bug in the SSE implementation of IAMAX
354 * Fixed a CMAKE build failure with DYNAMIC_ARCH
355 * Fixed cpu autodetection of Goldmont+, Cannon Lake and Ice Lake
356 * Fixed a compilation failure on OSX with compiler name containing dash
357 * Fixed compilation with MinGW on SkylakeX
358 * Improved speed of the AVX512 GEMM3M kernel on SkylakeX
359 * Added an AVX512 STRMM kernel for SkylakeX
360 * Improved GEMM performance on Haswell and Zen
363 * fixed compilation of the DYNAMIC_ARCH code
365 ====================================================================
370 ` * LAPACK has been updated to 3.9.0 (plus patches up to
372 * CMAKE support has been improved in several areas including
374 * a thread race condition in the GEMM3M kernels was resolved
375 * the "generic" (plain C) gemm beta kernel used by many targets
377 * an optimized version of the LAPACK trtrs functions has been added
378 * an incompatibilty between the LAPACK tests and the OpenBLAS
379 implementation of XERBLA was resolved, removing the numerous
380 warnings about wrong error exits in the former
381 * support for NetBSD has been added
382 * support for compilation with g95 and non-GNU versions of ld
384 * support for compilation with (upcoming) gcc 10 has been added
387 * worked around miscompilation of several POWER8 and POWER9
388 kernels by older versions of gcc
389 * added support for big-endian POWER8 and for compilation on AIX
390 * corrected bugs in the big-endian support for PPC440 and PPC970
391 * DYNAMIC_ARCH support is now available in CMAKE builds as well
394 * performance of DGEMM_BETA and SGEMM_NCOPY has been improved
395 * compilation for 32bit works again
396 * performance of the RPCC function has been improved
397 * improved performance on small systems
398 * DYNAMIC_ARCH support is now available in CMAKE builds as well
399 * cross-compilation from OSX to IOS was simplified
402 * a new AVX512 DGEMM kernel was added and the AVX512 SGEMM kernel
403 was significantly improved
404 * optimized AVX512 kernels for CGEMM and ZGEMM have been added
405 * AVX2 kernels for STRMM, SGEMM, and CGEMM have been significantly
406 sped up and optimized CGEMM3M and ZGEMM3M kernels have been added
407 * added support for QEMU virtual cpus
408 * a compilation problem with PGI and SUN compilers was fixed
409 * Intel "Goldmont plus" is now autodetected
410 * a potential crash on program exit on MS Windows has been fixed
413 * an unwanted case sensitivity in the implementation of LSAME
414 on older 32bit AMD cpus was fixed
417 * Z15 is now supported as Z14
418 * DYNAMIC_ARCH is now available on ZARCH as well
420 ====================================================================
425 * having the gmake special variables TARGET_ARCH or TARGET_MACH
426 defined no longer causes build failures in ctest or utest
427 * defining NO_AFFINITY or USE_TLS to 0 in gmake builds no longer
428 has the same effect as setting them to 1
429 * a new test program was added to allow checking the library for
431 * a new option USE_LOCKING was added to ensure thread safety when
432 OpenBLAS itself is built without multithreading but will be
433 called from multiple threads.
434 * a build failure on Linux with glibc versions earlier than 2.5
436 * a runtime error with CPU enumeration (and NO_AFFINITY not set)
437 on glibc 2.6 was fixed
438 * NO_AFFINITY was added to the CMAKE options (and defaults to being
439 active on Linux, as in the gmake builds)
442 * the build-time logic for detection of AVX512 availability in
443 the processor and compiler was fixed
444 * gmake builds on OSX now set the internal name of the library to
445 libopenblas.0.dylib (consistent with CMAKE)
446 * the Haswell DGEMM kernel received a significant speedup through
447 improved prefetch and load instructions
448 * performance of DGEMM, DTRMM, DTRSM and ZDOT on Zen/Zen2 was markedly
449 increased by avoiding vpermpd instructions
450 * the SKYLAKEX (AVX512) DGEMM helper functions have now been disabled
451 to fix remaining errors in DGEMM, DSYMM and DTRMM
454 * added support for building on FreeBSD/powerpc64 and FreeBSD/ppc970
455 * added optimized kernels for POWER9 SGEMM and STRMM
458 * fixed the softfp implementations of xAMAX and IxAMAX
459 * removed the predefined -march= flags on both ARMV5 and ARMV6 as
460 they were appropriate for only a subset of platforms
462 ====================================================================
467 * the build tools now check that a given cpu TARGET is actually valid
468 * the build-time check of system features (c_check) has been made
469 less dependent on particular perl features (this should mainly
470 benefit building on Windows)
471 * several problem with the ReLAPACK integration were fixed,
472 including INTERFACE64 support and building a shared library
473 * building with CMAKE on BSD systems was improved
474 * a non-absolute SUM function was added based on the
475 existing optimized code for ASUM
476 * CBLAS interfaces to the IxMIN and IxMAX functions were added
477 * a name clash between LAPACKE and BOOST headers was resolved
478 * CMAKE builds with OpenMP failed to include the appropriate getrf_parallel
480 * a crash on thread (key) deletion with the USE_TLS=1 memory management
482 * restored several earlier fixes, in particular for OpenMP performance,
483 building on BSD, and calling fork on CYGWIN, which had inadvertently
484 been dropped in the 0.3.3 rewrite of the memory management code.
487 * the AVX512 DGEMM kernel has been disabled again due to unsolved problems
488 * building with old versions of MSVC was fixed
489 * it is now possible to build a static library on Windows with CMAKE
490 * accessing environment variables on CYGWIN at run time was fixed
491 * the CMAKE build system now recognizes 32bit userspace on 64bit hardware
492 * Intel "Denverton" atom and Hygon "Dhyana" zen CPUs are now autodetected
493 * building for DYNAMIC_ARCH with a DYNAMIC_LIST of targets is now supported
495 * building for DYNAMIC_ARCH with GENERIC as the default target is now supported
496 * a buffer overflow in the SSE GEMM kernel for Intel Nano targets was fixed
497 * assembly bugs involving undeclared modification of input operands were fixed
498 in the AXPY, DOT, GEMV, GER, SCAL, SYMV and TRSM microkernels for Nehalem,
499 Sandybridge, Haswell, Bulldozer and Piledriver. These would typically cause
500 test failures or segfaults when compiled with recent versions of gcc from 8 onward.
501 * a similar bug was fixed in the blas_quickdivide code used to split workloads
503 * a bug in the IxMIN implementation for the GENERIC target made it return the result of IxMAX
504 * fixed building on SkylakeX systems when either the compiler or the (emulated) operating
505 environment does not support AVX512
506 * improved GEMM performance on ZEN targets
509 * build failures caused by the recently added checks for AVX512 were fixed
510 * an inline assembly bug involving undeclared modification of an input argument was
511 fixed in the blas_quickdivide code used to split workloads in most functions
512 * a bug in the IMIN implementation for the GENERIC target made it return the result of IMAX
515 * a bug in the IMIN implementation made it return the result of IMAX
518 * single precision BLAS1/2 functions have received optimized POWER8 kernels
519 * POWER9 is now a separate target, with an optimized DGEMM/DTRMM kernel
520 * building on PPC970 systems under OSX Leopard or Tiger is now supported
521 * out-of-bounds memory accesses in the gemm_beta microkernels were fixed
522 * building a shared library on AIX is now supported for POWER6
523 * DYNAMIC_ARCH support has been added for POWER6 and newer
526 * corrected xDOT behaviour with zero INC_X or INC_Y
527 * a bug in the IMIN implementation made it return the result of IMAX
530 * added support for HiSilicon TSV110 cpus
531 * the CMAKE build system now recognizes 32bit userspace on 64bit hardware
532 * cross-compilation with CMAKE now works again
533 * a bug in the IMIN implementation made it return the result of IMAX
534 * ARMV8 builds with the BINARY=32 option are now automatically handled as ARMV7
537 * optimized microkernels for single precicion BLAS1/2 functions have been added
540 ====================================================================
545 * loop unrolling in TRMV has been enabled again.
546 * A domain error in the thread workload distribution for SYRK
548 * gmake builds will now automatically add -fPIC to the build
549 options if the platform requires it.
550 * a pthreads key leakage (and associate crash on dlclose) in
551 the USE_TLS codepath was fixed.
552 * building of the utest cases on systems that do not provide
553 an implementation of complex.h was fixed.
556 * the SkylakeX code was changed to compile on OSX.
557 * unwanted application of the -march=skylake-avx512 option
558 to the common code parts of a DYNAMIC_ARCH build was fixed.
559 * improved performance of SGEMM for small workloads on Skylake X.
560 * performance of SGEMM and DGEMM was improved on Haswell.
563 * a configuration error that broke the CNRM2 kernel was corrected.
564 * compilation of the GEMM kernels with CMAKE was fixed.
565 * DYNAMIC_ARCH builds are now available with CMAKE as well.
566 * using CMAKE for cross-compilation to the new cpu TARGETs
567 introduced in 0.3.4 now works.
570 * a problem in cpu autodetection for AIX has been corrected.
572 ====================================================================
577 * the new, experimental thread-local memory allocation had
578 inadvertently been left enabled for gmake builds in 0.3.3
579 despite the announcement. It is now disabled by default, and
580 single-threaded builds will keep using the old allocator even
581 if the USE_TLS option is turned on.
582 * OpenBLAS will now provide enough buffer space for at least 50
584 * The output of openblas_get_config() now contains the version
586 * A serious thread safety bug in GEMV operation with small M and
587 large N size has been fixed.
588 * The code will now automatically call blas_thread_init after a
589 fork if needed before handling a call to openblas_set_num_threads
590 * Accesses to parallelized level3 functions from multiple callers
591 are now serialized to avoid thread races (unless using OpenMP).
592 This should provide better performance than the known-threadsafe
593 (but non-default) USE_SIMPLE_THREADED_LEVEL3 option.
594 * When building LAPACK with gfortran, -frecursive is now (again)
595 enabled by default to ensure correct behaviour.
596 * The OpenBLAS version cblas.h now supports both CBLAS_ORDER and
597 CBLAS_LAYOUT as the name of the matrix row/column order option.
598 * Externally set LDFLAGS are now passed through to the final compile/link
599 steps to facilitate setting platform-specific linker flags.
600 * A potential race condition during the build of LAPACK (that would
601 usually manifest itself as a failure to build TESTING/MATGEN) has been
603 * xHEMV has been changed to stay single-threaded for small input sizes
604 where the overhead of multithreading exceeds any possible gains
605 * CSWAP and ZSWAP have been limited to a single thread except on ARMV8 or
606 ThunderX hardware with sizable input.
607 * Linker flags for the PGI compiler have been updated
608 * Behaviour of AXPY with zero increments is now handled in the C interface,
609 correcting the result on at least Intel Atom.
610 * The result matrix from calling SGELSS with an all-zero input matrix is
611 now zeroed completely.
614 * Autodetection of AMD Ryzen2 has been fixed (again).
615 * CMAKE builds now support labeling of an INTERFACE64=1 build of
616 the library with the _64 suffix.
617 * AVX512 version of DGEMM has been added and the AVX512 SGEMM kernel
618 has been sped up by rewriting with C intrinsics
619 * Fixed compilation on RHEL5/CENTOS5 (issue with typename __WAIT_STATUS)
622 * added support for building on AIX (with gcc and GNU tools from AIX Toolbox).
623 * CPU type detection has been implemented for AIX.
624 * CPU type detection has been fixed for NETBSD.
627 * AXPY on LOONGSON3A has been corrected to pass "zero increment" utest.
628 * DSDOT on LOONGSON3A has been fixed.
629 * the SGEMM microkernel has been hardened against potential data loss.
632 * DYNAMic_ARCH support is now available for 64bit ARM
633 * cross-compiling for ARMV8 under iOS now works.
634 * cpu-specific code has been rearranged to make better use of both
635 hardware commonalities and model-specific compiler optimizations.
636 * XGENE1 has been removed as a TARGET, superseded by the improved generic
640 * Older assembly mnemonics have been converted to UAL form to allow
641 building with clang 7.0
642 * Cross compiling LAPACKE for Android has been fixed again (broken by
643 update to LAPACK 3.7.0 some while ago).
645 ====================================================================
650 * thread memory allocation has been switched back to the method
651 used before version 0.3.1 due to unexpected problems caused by
652 the new code under some circumstances. A new compile-time option
653 USE_TLS has been added to enable the new code, and it is hoped
654 that this can become the default again in the next version.
655 * LAPAck PR272 has been integrated, which fixes spurious errors
656 in DSYEVR and related functions caused by missing conversion
657 from ILAENV to ILAENV_2STAGE in several _2stage routines.
658 * the cmake-generated OpenBLASConfig.cmake now uses correct case
659 for the name of the library
660 * added support for Haiku OS
663 * added AVX512 implementations of SDOT, DDOT, SAXPY, DAXPY,
664 DSCAL, DGEMVN and DSYMVL
665 * added a workaround for a cygwin issue that prevented compilation
669 * added autodetection of Z14
670 * fixed TRMM errors in the generic target
672 ====================================================================
677 * fixes for regressions caused by the rewrite of the thread
678 initialization code in 0.3.1
681 * fixed cpu autodetection for the BSDs
684 * fixed utest errors in AXPY, DSDOT, ROT and SWAP
687 * added autodetection of AMD Ryzen 2
688 * fixed build with older versions of MSVC
690 ====================================================================
695 * rewritten thread initialization code with significantly reduced overhead
696 * added CBLAS interfaces to the IxAMIN BLAS extension functions
697 * fixed the lapack-test target
698 * CMAKE builds now create an OpenBLASConfig.cmake file
699 * ZAXPY now uses a single thread for small input sizes
700 * the LAPACK code was updated from Reference-LAPACK/lapack#253
701 (fixing LAPACKE interfaces to Aasen's functions)
704 * corrected CROT and ZROT behaviour with zero INC_X
707 * corrected xDOT behaviour with zero INC_X or INC_Y
710 * retired some older targets of DYNAMIC_ARCH builds to a new option DYNAMIC_OLDER,
711 this affects PENRYN,DUNNINGTON,OPTERON,OPTERON_SSE3,BOBCAT,ATOM and NANO
712 (which will still be supported via the slower PRESCOTT kernels when this option is not set)
713 * added an option DYNAMIC_LIST that (used in conjunction with DYNAMIC_ARCH) allows to
714 specify the list of x86_64 targets to include. Any target not on the list will be supported
715 by the Sandybridge or Nehalem kernels if available, or by Prescott.
716 * improved SWITCH_RATIO on Haswell for increased GEMM throughput
717 * added initial support for Intel Skylake X, including an AVX512 SGEMM kernel
718 * added autodetection of Intel Cannon Lake series as Skylake X
719 * added a default L2 cache size for hypervisors that return zero here (Chromebook)
720 * fixed a name clash with recent Windows10 headers that broke the build with (at least)
721 recent mingw from MSYS2
722 * fixed a link error in mixed clang/gfortran builds with OpenMP
723 * updated the OSX deployment target to 10.8
724 * switched on parallel make for builds on MS Windows by default
727 * fixed SSWAP and DSWAP behaviour with zero INC_X and INC_Y
729 ====================================================================
734 * fixed some more thread race and locking bugs
735 * added preliminary support for calling an OpenMP build of the library from multiple threads
736 * removed performance impact of thread locks added in 0.2.20 on OpenMP code
737 * general code cleanup
738 * optimized DSDOT implementation
739 * improved thread distribution for GEMM
740 * corrected IMATCOPY/OMATCOPY implementation
741 * fixed out-of-bounds accesses in the multithreaded xBMV/xPMV and SYMV implementations
742 * cmake build improvements
743 * pkgconfig file now contains build options
744 * openblas_get_config() now reports USE_OPENMP and NUM_THREADS settings used for the build
745 * corrections and improvements for systems with more than 64 cpus
746 * LAPACK code updated to 3.8.0 including later fixes
747 * added ReLAPACK, a recursive implementation of several LAPACK functions
748 * Rewrote ROTMG to handle cases that the netlib code failed to address
749 * Disabled (broken) multithreading code for xTRMV
750 * corrected prototypes of complex CBLAS functions to make our cblas.h match the generally accepted standard
751 * shared memory access failures on startup are now handled more gracefully
752 * restored utests from earlier releases (and made them pass on all affected systems)
755 * several fixes for cpu autodetection
758 * corrected vector register overwriting in several Power8 kernels
759 * optimized additional BLAS functions
762 * added support for CortexA53 and A72
763 * added autodetection for ThunderX2T99
764 * made most optimized kernels the default for generic ARMv8 targets
767 * parallelized DDOT kernel for Haswell
768 * changed alignment directives in assembly kernels to boost performance on OSX
769 * fixed register handling in the GEMV microkernels (bug exposed by gcc7)
770 * added support for building on OpenBSD and Dragonfly
771 * updated compiler options to work with Intel release 2018
772 * support fully optimized build with clang/flang on Microsoft Windows
773 * fixed building on AIX
776 * added optimized BLAS 1/2 functions
779 * fixed cpu autodetection helper code
780 * added mips32 1004K cpu (Mediatek MT7621 and similar SoC)
781 * added mips64 I6500 cpu
783 ====================================================================
788 * Improved CMake support
789 * Fixed several thread race and locking bugs
790 * Fixed default LAPACK optimization level
791 * Updated LAPACK to 3.7.0
792 * Added ReLAPACK (https://github.com/HPAC/ReLAPACK, make BUILD_RELAPACK=1)
795 * Optimizations for Power9
796 * Fixed several Power8 assembly bugs
799 * New optimized Vulcan and ThunderX2T99 targets
800 * Support for ARMV7 SOFT_FP ABI (make ARM_SOFTFP_ABI=1)
801 * Detect all cpu cores including offline ones
802 * Fix compilation with CLANG
803 * Support building a shared library for Android
806 * Fixed several threading issues
807 * Fix compilation with CLANG
810 * Detect Intel Bay Trail and Apollo Lake
811 * Detect Intel Sky Lake and Kaby Lake
812 * Detect Intel Knights Landing
813 * Detect AMD A8, A10, A12 and Ryzen
814 * Support 64bit builds with Visual Studio
815 * Fix building with Intel and PGI compilers
816 * Fix building with MINGW and TDM-GCC
817 * Fix cmake builds for Haswell and related cpus
818 * Fix building for Sandybridge with CLANG 3.9
819 * Add support for the FLANG compiler
822 * New target z13 with BLAS3 optimizations
824 ====================================================================
828 * Improved cross compiling.
829 * Fix the bug on musl libc.
832 * Optimize BLAS on Power8
833 * Fixed Julia+OpenBLAS bugs on Power8
836 * Optimize BLAS on MIPS P5600 and I6400 (Thanks, Shivraj Patil, Kaustubh Raste)
839 * Improved on ARM Cortex-A57. (Thanks, Ashwin Sekhar T K)
842 ====================================================================
846 * If you set MAKE_NB_JOBS flag less or equal than zero,
847 make will be without -j.
850 * Support building Visual Studio static library. (#813, Thanks, theoractice)
851 * Fix bugs to pass buidbot CI tests (http://build.openblas.net)
854 * Provide DGEMM 8x4 kernel for Cortex-A57 (Thanks, Ashwin Sekhar T K)
857 * Optimize S and C BLAS3 on Power8
858 * Optimize BLAS2/1 on Power8
860 ====================================================================
864 * Enable BUILD_LAPACK_DEPRECATED=1 by default.
866 ====================================================================
870 * Avoid potential getenv segfault. (#716)
871 * Import LAPACK svn bugfix #142-#147,#150-#155
874 * Optimize c/zgemv for AMD Bulldozer, Piledriver, Steamroller
875 * Fix bug with scipy linalg test.
878 * Improve DGEMM for ARM Cortex-A57. (Thanks, Ashwin Sekhar T K)
881 * Optimize D and Z BLAS3 functions for Power8.
883 ====================================================================
887 * Upgrade LAPACK to 3.6.0 version.
888 Add BUILD_LAPACK_DEPRECATED option in Makefile.rule to build
889 LAPACK deprecated functions.
890 * Add MAKE_NB_JOBS option in Makefile.
891 Force number of make jobs.This is particularly
892 useful when using distcc. (#735. Thanks, Jerome Robert.)
893 * Redesign unit test. Run unit/regression test at every build (Travis-CI and Appveyor).
894 * Disable multi-threading for small size swap and ger. (#744. Thanks, Jerome Robert)
895 * Improve small zger, zgemv, ztrmv using stack alloction (#727. Thanks, Jerome Robert)
896 * Let openblas_get_num_threads return the number of active threads.
897 (#760. Thanks, Jerome Robert)
898 * Support illumos(OmniOS). (#749. Thanks, Lauri Tirkkonen)
899 * Fix LAPACK Dormbr, Dormlq bug. (#711, #713. Thanks, Brendan Tracey)
900 * Update scipy benchmark script. (#745. Thanks, John Kirkham)
903 * Optimize trsm kernels for AMD Bulldozer, Piledriver, Steamroller.
904 * Detect Intel Avoton.
905 * Detect AMD Trinity, Richland, E2-3200.
906 * Fix gemv performance bug on Mac OSX Intel Haswell.
907 * Fix some bugs with CMake and Visual Studio
910 * Support and optimize Cortex-A57 AArch64.
911 (#686. Thanks, Ashwin Sekhar TK)
912 * Fix Android build on ARMV7 (#778. Thanks, Paul Mustiere)
913 * Update ARMV6 kernels.
916 * Fix detection of POWER architecture
917 (#684. Thanks, Sebastien Villemot)
919 ====================================================================
923 * Support cmake on x86/x86-64. Natively compiling on MS Visual Studio.
924 (experimental. Thank Hank Anderson for the initial cmake porting work.)
926 On Linux and Mac OSX, OpenBLAS cmake supports assembly kernels.
931 On Windows MS Visual Studio, OpenBLAS cmake only support C kernels.
932 (OpenBLAS uses AT&T style assembly, which is not supported by MSVC.)
933 e.g. cmake -G "Visual Studio 12 Win64" .
934 Open OpenBLAS.sln and build.
936 * Enable MAX_STACK_ALLOC flags by default.
937 Improve ger and gemv for small matrices.
938 * Improve gemv parallel with small m and large n case.
939 * Improve ?imatcopy when lda==ldb (#633. Thanks, Martin Koehler)
940 * Add vecLib benchmarks (#565. Thanks, Andreas Noack.)
941 * Fix LAPACK lantr for row major matrices (#634. Thanks, Dan Kortschak)
942 * Fix LAPACKE lansy (#640. Thanks, Dan Kortschak)
943 * Import bug fixes for LAPACKE s/dormlq, c/zunmlq
944 * Raise the signal when pthread_create fails (#668. Thanks, James K. Lowden)
945 * Remove g77 from compiler list.
946 * Enable AppVeyor Windows CI.
949 * Support pure C generic kernels for x86/x86-64.
950 * Support Intel Boardwell and Skylake by Haswell kernels.
951 * Support AMD Excavator by Steamroller kernels.
952 * Optimize s/d/c/zdot for Intel SandyBridge and Haswell.
953 * Optimize s/d/c/zdot for AMD Piledriver and Steamroller.
954 * Optimize s/d/c/zapxy for Intel SandyBridge and Haswell.
955 * Optimize s/d/c/zapxy for AMD Piledriver and Steamroller.
956 * Optimize d/c/zscal for Intel Haswell, dscal for Intel SandyBridge.
957 * Optimize d/c/zscal for AMD Bulldozer, Piledriver and Steamroller.
958 * Optimize s/dger for Intel SandyBridge.
959 * Optimize s/dsymv for Intel SandyBridge.
960 * Optimize ssymv for Intel Haswell.
961 * Optimize dgemv for Intel Nehalem and Haswell.
962 * Optimize dtrmm for Intel Haswell.
965 * Support Android NDK armeabi-v7a-hard ABI (-mfloat-abi=hard)
966 e.g. make HOSTCC=gcc CC=arm-linux-androideabi-gcc NO_LAPACK=1 TARGET=ARMV7
967 * Fix lock, rpcc bugs (#616, #617. Thanks, Grazvydas Ignotas)
969 * Support ppc64le platform (ELF ABI v2. #612. Thanks, Matthew Brandyberry.)
970 * Support POWER7/8 by POWER6 kernels. (#612. Thanks, Fábio Perez.)
972 ====================================================================
976 * Improve OpenBLASConfig.cmake. (#474, #475. Thanks, xantares.)
977 * Improve ger and gemv for small matrices by stack allocation.
978 e.g. make -DMAX_STACK_ALLOC=2048 (#482. Thanks, Jerome Robert.)
979 * Introduce openblas_get_num_threads and openblas_get_num_procs.
980 (#497. Thanks, Erik Schnetter.)
981 * Add ATLAS-style ?geadd function. (#509. Thanks, Martin Köhler.)
982 * Fix c/zsyr bug with negative incx. (#492.)
983 * Fix race condition during shutdown causing a crash in
984 gotoblas_set_affinity(). (#508. Thanks, Ton van den Heuvel.)
987 * Support AMD Streamroller.
990 * Add Cortex-A9 and Cortex-A15 targets.
992 ====================================================================
996 * Add SYMBOLPREFIX and SYMBOLSUFFIX makefile options
997 for adding a prefix or suffix to all exported symbol names
998 in the shared library.(#459, Thanks Tony Kelman)
999 * Provide OpenBLASConfig.cmake at installation.
1000 * Fix Fortran compiler detection on FreeBSD.
1001 (#470, Thanks Mike Nolta)
1005 * Add generic kernel files for x86-64. make TARGET=GENERIC
1006 * Fix a bug of sgemm kernel on Intel Sandy Bridge.
1007 * Fix c_check bug on some amd64 systems. (#471, Thanks Mike Nolta)
1010 * Support APM's X-Gene 1 AArch64 processors.
1011 Optimize trmm and sgemm. (#465, Thanks Dave Nuechterlein)
1013 ====================================================================
1017 * Added CBLAS interface for ?omatcopy and ?imatcopy.
1018 * Enable ?gemm3m functions.
1019 * Added benchmark for ?gemm3m.
1020 * Optimized multithreading lower limits.
1021 * Disabled SYMM3M and HEMM3M functions
1022 because of segment violations.
1025 * Improved axpy and symv performance on AMD Bulldozer.
1026 * Improved gemv performance on modern Intel and AMD CPUs.
1028 ====================================================================
1032 * Added some benchmark codes.
1033 * Fix link error on Linux/musl.(Thanks Isaac Dunham)
1036 * Improved s/c/zgemm performance for Intel Haswell.
1037 * Improved s/d/c/zgemv performance.
1038 * Support the big numa machine.(EXPERIMENT)
1041 * Fix detection when cpuinfo uses "Processor". (Thanks Isaiah)
1043 ====================================================================
1047 * Added BLAS extensions as following.
1048 s/d/c/zaxpby, s/d/c/zimatcopy, s/d/c/zomatcopy.
1049 * Added OPENBLAS_CORETYPE environment for dynamic_arch. (a86d34)
1050 * Added NO_AVX2 flag for old binutils. (#401)
1051 * Support outputing the CPU corename on runtime.(#407)
1052 * Patched LAPACK to fix bug 114, 117, 118.
1053 (http://www.netlib.org/lapack/bug_list.html)
1054 * Disabled ?gemm3m for a work-around fix. (#400)
1056 * Fixed lots of bugs for optimized kernels on sandybridge,Haswell,
1057 bulldozer, and piledriver.
1058 https://github.com/xianyi/OpenBLAS/wiki/Fixed-optimized-kernels-To-do-List
1061 * Improved LAPACK testing.
1063 ====================================================================
1067 * Improved the result for LAPACK testing. (#372)
1068 * Installed DLL to prefix/bin instead of prefix/lib. (#366)
1069 * Build import library on Windows.(#374)
1071 * To improve LAPACK testing, we fallback some kernels. (#372)
1072 https://github.com/xianyi/OpenBLAS/wiki/Fixed-optimized-kernels-To-do-List
1074 ====================================================================
1078 * Added OPENBLAS_VERBOSE environment variable.(#338)
1079 * Make OpenBLAS thread-pool resilient to fork via pthread_atfork.
1080 (#294, Thank Olivier Grisel)
1084 * Detect Intel Haswell for new Macbook.
1086 ====================================================================
1090 * Update LAPACK to 3.5.0 version
1091 * Fixed compatiable issues with Clang and Pathscale compilers.
1094 * Optimization on Intel Haswell.
1095 * Enable optimization kernels on AMD Bulldozer and Piledriver.
1098 * Support ARMv6 and ARMv7 ISA.
1099 * Optimization on ARM Cortex-A9.
1101 ====================================================================
1105 * Support Open64 5.0. (#266)
1106 * Add executable stack markings. (#262, Thank Sébastien Fabbro)
1107 * Respect user's LDFLAGS (Thank Sébastien Fabbro)
1110 * Rollback bulldozer and piledriver kernels to barcelona kernels (#263)
1111 We will fix the compuational error bug in bulldozer and piledriver kernels.
1113 ====================================================================
1117 * Support LSB (Linux Standard Base) 4.1.
1119 * Include LAPACK 3.4.2 source codes to the repo.
1120 Avoid downloading at compile time.
1121 * Add NO_PARALLEL_MAKE flag to disable parallel make.
1122 * Create openblas_get_parallel to retrieve information which
1123 parallelization model is used by OpenBLAS. (Thank grisuthedragon)
1124 * Detect LLVM/Clang compiler. The default compiler is Clang on Mac OS X.
1125 * Change LIBSUFFIX from .lib to .a on windows.
1126 * A work-around for dtrti_U single thread bug. Replace it with LAPACK codes. (#191)
1129 * Optimize c/zgemm, trsm, dgemv_n, ddot, daxpy, dcopy on
1130 AMD Bulldozer. (Thank Werner Saar)
1131 * Add Intel Haswell support (using Sandybridge optimizations).
1133 * Add AMD Piledriver support (using Bulldozer optimizations).
1134 * Fix the computational error in zgemm avx kernel on
1136 * Fix the overflow bug in gemv.
1137 * Fix the overflow bug in multi-threaded BLAS3, getrf when NUM_THREADS
1138 is very large.(#214, #221, #246).
1140 * Support loongcc (Open64 based) compiler for ICT Loongson 3A/B.
1143 * Support Power7 by old Power6 kernels. (#220)
1145 ====================================================================
1149 * Improved OpenMP performance slightly. (d744c9)
1150 * Improved cblas.h compatibility with Intel MKL.(#185)
1151 * Fixed the overflowing bug in single thread cholesky factorization.
1152 * Fixed the overflowing buffer bug of multithreading hbmv and sbmv.(#174)
1155 * Added AMD Bulldozer x86-64 S/DGEMM AVX kernels. (Thank Werner Saar)
1156 We will tune the performance in future.
1157 * Auto-detect Intel Xeon E7540.
1158 * Fixed the overflowing buffer bug of gemv. (#173)
1159 * Fixed the bug of s/cdot about invalid reading NAN on x86_64. (#189)
1163 ====================================================================
1167 * Added NO_SHARED flag to disable generating the shared library.
1168 * Compile LAPACKE with ILP64 modle when INTERFACE64=1 (#158)
1169 * Export LAPACK 3.4.2 symbols in shared library. (#147)
1170 * Only detect the number of physical CPU cores on Mac OSX. (#157)
1171 * Fixed NetBSD build. (#155)
1172 * Fixed compilation with TARGET=GENERIC. (#160)
1174 * Restore the original CPU affinity when calling
1175 openblas_set_num_threads(1) (#153)
1176 * Fixed a SEGFAULT bug in dgemv_t when m is very large.(#154)
1179 ====================================================================
1183 * Upgraded LAPACK to 3.4.2 version. (#145)
1184 * Provided support for passing CFLAGS, FFLAGS, PFLAGS,
1185 FPFLAGS to make. (#137)
1186 * f77blas.h:compatibility for compilers without C99 complex
1187 number support. (#141)
1189 * Added NO_AVX flag. Check OS supporting AVX on runtime. (#139)
1190 * Fixed zdot incompatibility ABI issue with GCC 4.7 on
1191 Windows 32-bit. (#140)
1193 * Fixed the generation of shared library bug.
1194 * Fixed the detection bug on the Loongson 3A server.
1195 ====================================================================
1199 * Fixed LAPACK unstable bug about ?laswp. (#130)
1200 * Fixed the shared library bug about unloading the library on
1202 * Fixed the compilation failure on BlueGene/P (TARGET=PPC440FP2)
1203 Please use gcc and IBM xlf. (#134)
1205 * Supported goto_set_num_threads and openblas_set_num_threads
1206 APIs in Windows. They can set the number of threads on runtime.
1208 ====================================================================
1212 * Fixed exporting DLL functions bug on Windows/MingW
1213 * Support GNU Hurd (Thank Sylvestre Ledru)
1214 * Support kfreebsd kernel (Thank Sylvestre Ledru)
1216 * Support Intel Sandy Bridge 22nm desktop/mobile CPU
1218 * Improve the detection of SPARC (Thank Sylvestre Ledru)
1220 ====================================================================
1225 * Fixed the SEGFAULT bug about hyper-theading
1226 * Support AMD Bulldozer by using GotoBLAS2 AMD Barcelona codes
1228 ====================================================================
1232 * Removed the limitation (64) of numbers of CPU cores.
1233 Now, it supports 256 cores at max.
1234 * Supported clang compiler.
1235 * Fixed some build bugs on FreeBSD
1237 * Optimized Level-3 BLAS on Intel Sandy Bridge x86-64 by AVX instructions.
1238 Please use gcc >= 4.6 or clang >=3.1.
1239 * Support AMD Bobcat by using GotoBLAS2 AMD Barcelona codes.
1241 ====================================================================
1245 * Upgraded LAPACK to 3.4.1 version. (Thank Zaheer Chothia)
1246 * Supported LAPACKE, a C interface to LAPACKE. (Thank Zaheer Chothia)
1247 * Fixed the build bug (MD5 and download) on Mac OSX.
1248 * Auto download CUnit 2.1.2-2 from SF.net with UTEST_CHECK=1.
1249 * Fxied the compatibility issue for compilers without C99 complex number
1250 (e.g. Visual Studio)
1252 * Auto-detect Intel Sandy Bridge Core i7-3xxx & Xeon E7 Westmere-EX.
1253 * Test alpha=Nan in dscale.
1254 * Fixed a SEGFAULT bug in samax on x86 windows.
1256 ====================================================================
1260 * Set soname of shared library on Linux.
1261 * Added LIBNAMESUFFIX flag in Makefile.rule. The user can use
1262 this flag to control the library name, e.g. libopenblas.a,
1263 libopenblas_ifort.a or libopenblas_omp.a.
1264 * Added GEMM_MULTITHREAD_THRESHOLD flag in Makefile.rule.
1265 The lib use single thread in GEMM function with small matrices.
1267 * Used GEMV SSE/SSE2 kernels on x86 32-bit.
1268 * Exported CBLAS functions in Windows DLL.
1270 * Completed Level-3 BLAS optimization on Loongson 3A CPU.
1271 * Improved GEMV performance on Loongson 3A CPU.
1272 * Improved Level-3 BLAS performance on Loongson 3B CPU. (EXPERIMENT)
1274 ====================================================================
1275 Version 0.1 alpha2.5
1278 * Fixed missing "#include <sched.h>" bug on Mac OS X.
1279 Thank Mike Nolta for the patch.
1280 * Upgraded LAPACK to 3.4.0 version
1281 * Fixed a bug on Mac OS X. Don't require SystemStubs on OS X.
1282 SystemStubs does not exist on Lion. Thank Stefan Karpinski.
1283 * Improved README with using OpenMP. Check the internal threads
1284 count less than or equal to omp_get_max_threads()
1286 * Auto-detect Intel Core i6/i7 (Sandy Bridge) CPU with Nehalem assembly kernels
1287 * Fixed some bugs on MingW 64-bit including zgemv, cdot, zdot.
1289 ====================================================================
1290 Version 0.1 alpha2.4
1293 * Fixed a bug about installation. The header file "fblas77.h"
1295 * Fixed #61 a building bug about setting TARGET and DYNAMIC_ARCH.
1296 * Try to handle absolute path of shared library in OSX. (#57)
1297 Thank Dr Kane O'Donnell.
1298 * Changed the installation folder layout to $(PREFIX)/include and
1302 * Fixed #58 zdot/xdot SEGFAULT bug with GCC-4.6 on x86. According
1303 to i386 calling convention, The callee should remove the first
1304 hidden parameter.Thank Mr. John for this patch.
1306 ====================================================================
1307 Version 0.1 alpha2.3
1311 * Added DTB_ENTRIES into dynamic arch setting parameters. Now,
1312 it can read DTB_ENTRIES on runtime. (Refs issue #55 on github)
1314 ====================================================================
1315 Version 0.1 alpha2.2
1319 * Fixed a building bug when DYNAMIC_ARCH=1 & INTERFACE64=1.
1320 (Refs issue #44 on github)
1322 ====================================================================
1323 Version 0.1 alpha2.1
1327 * Stop the build and output the error message when detecting
1328 fortran compiler failed. (Refs issue #42 on github)
1330 ====================================================================
1335 * Fixed blasint undefined bug in <cblas.h> file. Other software
1336 could include this header successfully(Refs issue #13 on github)
1337 * Fixed the SEGFAULT bug on 64 cores. On SMP server, the number
1338 of CPUs or cores should be less than or equal to 64.(Refs issue #14
1340 * Support "void goto_set_num_threads(int num_threads)" and "void
1341 openblas_set_num_threads(int num_threads)" when USE_OPENMP=1
1342 * Added extern "C" to support C++. Thank Tasio for the patch(Refs
1343 issue #21 on github)
1344 * Provided an error message when the arch is not supported.(Refs
1345 issue #19 on github)
1346 * Fixed issue #23. Fixed a bug of f_check script about generating link flags.
1347 * Added openblas_set_num_threads for Fortran.
1348 * Fixed #25 a wrong result of rotmg.
1349 * Fixed a bug about detecting underscore prefix in c_check.
1350 * Print the wall time (cycles) with enabling FUNCTION_PROFILE
1351 * Fixed #35 a build bug with NO_LAPACK=1 & DYNAMIC_ARCH=1
1352 * Added install target. You can use "make install". (Refs #20)
1356 * Fixed #28 a wrong result of dsdot on x86_64.
1357 * Fixed #32 a SEGFAULT bug of zdotc with gcc-4.6.
1358 * Fixed #33 ztrmm bug on Nehalem.
1359 * Work-around #27 the low performance axpy issue with small imput size & multithreads.
1362 * Fixed #28 a wrong result of dsdot on Loongson3A/MIPS64.
1363 * Optimized single/double precision BLAS Level3 on Loongson3A/MIPS64. (Refs #2)
1364 * Optimized single/double precision axpy function on Loongson3A/MIPS64. (Refs #3)
1366 ====================================================================
1371 * Support "make NO_LAPACK=1" to build the library without
1373 * Fixed randomly SEGFAULT when nodemask==NULL with above Linux 2.6.34.
1374 Thank Mr.Ei-ji Nakama providing this patch. (Refs issue #12 on github)
1375 * Added DEBUG=1 rule in Makefile.rule to build debug version.
1376 * Disable compiling quad precision in reference BLAS library(netlib BLAS).
1377 * Added unit testcases in utest/ subdir. Used CUnit framework.
1378 * Supported OPENBLAS_* & GOTO_* environment variables (Pleas see README)
1379 * Imported GotoBLAS2 1.13 BSD version
1382 * On x86 32bits, fixed a bug in zdot_sse2.S line 191. This would casue
1383 zdotu & zdotc failures. Instead, work-around it. (Refs issue #8 #9 on github)
1384 * Modified ?axpy functions to return same netlib BLAS results
1385 when incx==0 or incy==0 (Refs issue #7 on github)
1386 * Modified ?swap functions to return same netlib BLAS results
1387 when incx==0 or incy==0 (Refs issue #6 on github)
1388 * Modified ?rot functions to return same netlib BLAS results
1389 when incx==0 or incy==0 (Refs issue #4 on github)
1390 * Detect Intel Westmere,Intel Clarkdale and Intel Arrandale
1391 to use Nehalem codes.
1392 * Fixed a typo bug about compiling dynamic ARCH library.
1394 * Improve daxpy performance on ICT Loongson 3A.
1395 * Supported ICT Loongson 3A CPU (Refs issue #1 on github)
1396 ====================================================================