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Package "libopenblas-pthread-dev"

Name: libopenblas-pthread-dev

Description:

Optimized BLAS (linear algebra) library (dev, pthread)
Latest version: 0.3.33+ds-3ubuntu1
Release: stonking (26.10)
Level: updates
Repository: universe
Head package: openblas
Homepage: https://www.openblas.net/

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base universe 0.3.33+ds-3
proposed universe 0.3.33+ds-3ubuntu1

Changelog

Version: 0.3.33+ds-3ubuntu1 2026-11-12 20:08:07 UTC

openblas (0.3.33+ds-3ubuntu1) stonking; urgency=medium

  * d/p/arm64-sdot-zero-v0.patch: zero the v0 accumulator in the arm64
    ASIMD dot kernel and declare the registers it clobbers. On cores that
    dispatch to it (Neoverse N1, AmpereOne, Apple silicon, ThunderX2/3)
    sdot returned the dot product plus the four floats the caller left in
    v0, for unit stride and n >= 64 (LP: #2169719). Taken from upstream
    (OpenBLAS #5918, in 0.3.34).
  * d/t/sdot-v0: new arm64 autopkgtest calling sdot with v0 set.

 -- Ben Knill Mon, 05 Oct 2026 00:00:00 +0000
2169719 sdot on arm64 adds the caller's v0 register to the result (Neoverse N1, AmpereOne, Apple silicon, ThunderX2/3)


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