From c0827a716473bd61d3e8fa44c25184d370400267 Mon Sep 17 00:00:00 2001 From: Martin Kroeker Date: Sun, 2 Dec 2018 23:41:17 +0100 Subject: [PATCH] Update with changes from 0.3.4 --- Changelog.txt | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/Changelog.txt b/Changelog.txt index faecd82e3..0dd17a558 100644 --- a/Changelog.txt +++ b/Changelog.txt @@ -1,4 +1,77 @@ OpenBLAS ChangeLog +==================================================================== +Version 0.3.4 +02-Dec-2018 + +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). + ==================================================================== Version 0.3.3 31-Aug-2018