Issues

• OpenBLASConfig.cmake from the Makefile build on Windows has no OpenBLAS::OpenBLAS target: echo lines are missing the redirect

  OpenMathLib/OpenBLAS#6084 · Filter by author ndabas opened on Oct 1, 2026
  1

• arm64 SME2 (Apple M4): SGEMM/DGEMM well below the hardware, level-3 routines on NEON, M4 Pro not detected

  OpenMathLib/OpenBLAS#6073 · Filter by author tesch1 opened on Sep 29, 2026
  2

• SIGILL on EPYC 7713P Zen3 (family 0x19, exfamily 9), AVX2, no AVX-512

  OpenMathLib/OpenBLAS#6069 · Filter by author gland1 opened on Sep 28, 2026
  1

• Missing cgroup awareness

  OpenMathLib/OpenBLAS#6059 · Filter by author itamarst opened on Sep 21, 2026

• AMD Zen 5 architecture is misidentified

  OpenMathLib/OpenBLAS#6029 · Filter by author yurivict opened on Sep 13, 2026
  21

• SYMBOLSUFFIX have no effect when building static library

  OpenMathLib/OpenBLAS#6028 · Filter by author vryy opened on Sep 12, 2026
  1

• Discussion: Fortran/C interface fixes surfaced by wasm ABI enforcement

  OpenMathLib/OpenBLAS#6005 · Filter by author MMesch opened on Sep 1, 2026
  21

• Consider cleaning up the repository root directory

  OpenMathLib/OpenBLAS#5930 · Filter by author moluopro opened on Jul 19, 2026
  2

• Documentation: mkdocs is set for a breaking change. Time to move on?

  OpenMathLib/OpenBLAS#5870 · Filter by author MaddyGuthridge opened on Jun 25, 2026
  4

• BUG: Moore-Penrose Pseudoinverse numerical stability/consistency affected by recent OpenBLAS activity

  Support
  OpenMathLib/OpenBLAS#5866 · Filter by author tylerjereddy opened on Jun 24, 2026
  22

• Mixture of tabs and spaces can make reading code difficult in some configurations (e.g. browsing on GitHub)

  OpenMathLib/OpenBLAS#5834 · Filter by author itamarst opened on Jun 11, 2026
  1

• Data conversion when packing

  OpenMathLib/OpenBLAS#5647 · Filter by author ChipKerchner opened on Feb 13, 2026
  4

• Parallelization along K-dimension (Parallel Reduction) for GEMM with small M/N and large K

  OpenMathLib/OpenBLAS#5629 · Filter by author seulchanson opened on Jan 28, 2026
  2

• It seems impossible to pin the threads

  OpenMathLib/OpenBLAS#5590 · Filter by author rongcuid opened on Jan 3, 2026
  4

• OpenBLAS bottlenecks multithreading benefits in symv.c interface at 8 working threads due to memory allocator lock conflict

  OpenMathLib/OpenBLAS#5589 · Filter by author BioTurboNick opened on Jan 2, 2026
  11

• 2 GB at the start

  Support
  OpenMathLib/OpenBLAS#5587 · Filter by author tim-lebedkov opened on Dec 29, 2025
  7

• BIGNUMA and NUM_THREADS>256 on 2×192-core AmpereOne (AArch64)

  OpenMathLib/OpenBLAS#5555 · Filter by author DanielWicz opened on Nov 28, 2025
  3

• GEMM promote perfomance

  OpenMathLib/OpenBLAS#5541 · Filter by author kaka1989-tpp opened on Nov 19, 2025

• Extreme, load dependent slowness on multi-core CPUs with, for example, many iterations of a complex eigenproblem.

  OpenMathLib/OpenBLAS#5517 · Filter by author sdh4 opened on Oct 24, 2025
  5

• Need for HGEMM and HGEMV?

  OpenMathLib/OpenBLAS#5502 · Filter by author ChipKerchner opened on Oct 10, 2025
  2

• The performance of the OpenBlas library decreases when running in multi-threaded environments

  OpenMathLib/OpenBLAS#5469 · Filter by author fanjisheng520 opened on Sep 28, 2025
  6

• QUERY: Reduced performance in certain architecture only to-be-regained by OPENBLAS_NUM_THREADS=1

  Distribution packaging problem
  OpenMathLib/OpenBLAS#5383 · Filter by author ilayn opened on Jul 16, 2025
  16

  

• DAXPY outperforms DSCAL in multi-threaded environments

  OpenMathLib/OpenBLAS#5328 · Filter by author HKUST-Yujun opened on Jun 21, 2025
  2

• how to use parallel potrf

  OpenMathLib/OpenBLAS#5246 · Filter by author benyao-shiki opened on Apr 25, 2025
  4

• AXPY looks bad especially on MacOS (M4)

  OpenMathLib/OpenBLAS#5230 · Filter by author dasergatskov opened on Apr 16, 2025
  5