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[Optimization] Zen 4 / EPYC Macro-Blocking (P, Q, R) tuning utilizing COOPERLAKE kernels

Status: Open.

#5837 In OpenMathLib/OpenBLAS;

· Vasudeva-bit opened on Jun 13, 2026

gemm_driver templating breaks GEMM locking when different GEMMs happen concurrently

Status: Open.

#5836 In OpenMathLib/OpenBLAS;

· ngoldbaum opened on Jun 13, 2026

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

Status: Open.

#5834 In OpenMathLib/OpenBLAS;

· itamarst opened on Jun 11, 2026

SIGILL on VM

Status: Open.

#5831 In OpenMathLib/OpenBLAS;

· nicolamori opened on Jun 8, 2026

openblas_set_num_threads() is silently overridden when built with USE_OPENMP

Status: Open.

#5806 In OpenMathLib/OpenBLAS;

· nh2 opened on May 11, 2026

Data conversion when packing

Status: Open.

#5647 In OpenMathLib/OpenBLAS;

· ChipKerchner opened on Feb 13, 2026

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

Status: Open.

#5629 In OpenMathLib/OpenBLAS;

· seulchanson opened on Jan 28, 2026

It seems impossible to pin the threads

Status: Open.

#5590 In OpenMathLib/OpenBLAS;

· rongcuid opened on Jan 3, 2026

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

Status: Open.

#5589 In OpenMathLib/OpenBLAS;

· BioTurboNick opened on Jan 2, 2026

2 GB at the start

Support

Status: Open.

#5587 In OpenMathLib/OpenBLAS;

· tim-lebedkov opened on Dec 29, 2025

Ensure only public API has default symbol visibility, hide private symbols

Bug

Distribution packaging problemThird party package incompatibilities, inappropriate build flags or unmet dependencies etcThird party package incompatibilities, inappropriate build flags or unmet dependencies etc

Status: Open.

#5560 In OpenMathLib/OpenBLAS;

· rgommers opened on Dec 4, 2025

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

Status: Open.

#5555 In OpenMathLib/OpenBLAS;

· DanielWicz opened on Nov 28, 2025