Update Changelog.txt for 0.3.27
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Martin Kroeker
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Changelog.txt
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Changelog.txt
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OpenBLAS ChangeLog
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====================================================================
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Version 0.3.27
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4-Apr-2024
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general:
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- added initial (generic) support for the CSKY architecture
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- capped the maximum number of threads used in GEMM, GETRF and POTRF to avoid creating
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underutilized or idle threads
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- sped up multithreaded POTRF on all platforms
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- added extension openblas_set_num_threads_local() that returns the previous thread count
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- re-evaluated the SGEMV and DGEMV load thresholds to avoid activating multithreading
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for too small workloads
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- improved the fallback code used when the precompiled number of threads is exceeded,
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and made it callable multiple times during the lifetime of an instance
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- added CBLAS interfaces for the BLAS extensions ?AMIN,?AMAX, CAXPYC and ZAXPYC
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- fixed a potential buffer overflow in the interface to the GEMMT kernels
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- fixed use of incompatible pointer types in GEMMT and C/ZAXPBY as flagged by GCC-14
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- fixed unwanted case sensitivity of the character parameters in ?TRTRS
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- sped up the OpenMP thread management code
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- fixed sizing of logical variables in INTERFACE64 builds of the C version of LAPACK
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- fixed inclusion of new LAPACK and LAPACKE functions from LAPACK 3.11 in the shared library
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- added a testsuite for the BLAS extensions
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- modified the error thresholds for SGS/DGS functions in the LAPACK testsuite to suppress
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spurious errors
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- added support for building the benchmark collection with CMAKE
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- added rewriting of linker options to avoid linking both libgomp and libomp in CMAKE builds
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with OpenMP enabled that use clang with gfortran
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- fixed building on systems with ucLibc
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- added support for calling ?NRM2 with a negative increment value on all architectures
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- added support for the LLVM18 version of the flang-new compiler
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- fixed handling of the OPENBLAS_LOOPS variable in several benchmarks
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- Integrated fixes from the Reference-LAPACK project:
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- Increased accuracy in C/ZLARFGP (Reference-LAPACK PR 981)
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x86:
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- fixed handling of NaN and Inf arguments in ZSCAL
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- fixed GEMM3M functions failing in CMAKE builds
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x86-64:
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- removed all instances of sched_yield() on Linux and BSD
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- fixed a potential deadlock in the thread server on MSWindows (introduced in 0.3.26)
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- fixed GEMM3M functions failing in CMAKE builds
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- fixed handling of NaN and Inf arguments in ZSCAL
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- added compiler checks for AVX512BF16 compatibility
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- fixed LLVM compiler options for Sapphire Rapids
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- fixed cpu handling fallbacks for Sapphire Rapids with
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disabled AVX2 in DYNAMIC_ARCH mode
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- fixed extensions SCSUM and DZSUM
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- improved GEMM performance for ZEN targets
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arm:
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- fixed handling of NaN and Inf arguments in ZSCAL
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arm64:
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- added initial support for the Cortex-A76 cpu
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- fixed handling of NaN and Inf arguments in ZSCAL
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- fixed default compiler options for gcc (-march and -mtune)
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- added support for ArmCompilerForLinux
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- added support for the NeoverseV2 cpu in DYNAMIC_ARCH builds
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- fixed mishandling of the INTERFACE64 option in CMAKE builds
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- corrected SCSUM kernels (erroneously duplicating SCASUM behaviour)
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- added SVE-enabled kernels for CSUM/ZSUM
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- worked around an inaccuracy in the NRM2 kernels for NeoverseN1 and Apple M
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power:
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- improved performance of SGEMM on POWER8/9/10
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- improved performance of DGEMM on POWER10
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- added support for OpenMP builds with xlc/xlf on AIX
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- improved cpu autodetection for DYNAMIC_ARCH builds on older AIX
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- fixed cpu core counting on AIX
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- added support for building a shared library on AIX
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riscv64:
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- added support for the X280 cpu
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- added support for semi-generic RISCV models with vector length 128 or 256
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- added support for compiling with either RVV 0.7.1 or RVV 1.0 standard compilers
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- fixed handling of NaN and Inf arguments in ZSCAL
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- improved cpu model autodetection
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- fixed corner cases in ?AXPBY for C910V
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- fixed handling of zero increments in ?AXPY kernels for C910V
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loongarch64:
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- added optimized kernels for ?AMIN and ?AMAX
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- fixed handling of NaN and Inf arguments in ZSCAL
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- fixed handling of corner cases in ?AXPBY
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- fixed computation of SAMIN and DAMIN in LSX mode
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- fixed computation of ?ROT
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- added optimized SSYMV and DSYMV kernels for LSX and LASX mode
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- added optimized CGEMM and ZGEMM kernels for LSX and LASX mode
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- added optimized CGEMV and ZGEMV kernels
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mips:
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- fixed utilizing MSA on P5600 and related cpus (broken in 0.3.22)
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- fixed handling of NaN and Inf arguments in ZSCAL
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- fixed mishandling of the INTERFACE64 option in CMAKE builds
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zarch:
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- fixed handling of NaN and Inf arguments in ZSCAL
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- fixed calculation of ?SUM on Z13
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====================================================================
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Version 0.3.26
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2-Jan-2024
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