Bug 1619040 - libghemical: use openblas instead of atlas
Summary: libghemical: use openblas instead of atlas
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: libghemical
Version: 31
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Mamoru TASAKA
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: 1506952
TreeView+ depends on / blocked
 
Reported: 2018-08-19 20:51 UTC by Dominik 'Rathann' Mierzejewski
Modified: 2020-08-21 11:11 UTC (History)
3 users (show)

Fixed In Version:
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Environment:
Last Closed: 2020-08-21 11:11:50 UTC
Type: Bug
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Description Dominik 'Rathann' Mierzejewski 2018-08-19 20:51:55 UTC
Description of problem:
Please BuildRequire: openblas instead of atlas where available (x86_64 %{ix86} armv7hl %{power64} aarch64 s390x, see %{openblas_arches} macro defined in openblas-srpm-macros package). Currently, it's available on all primary Fedora arches, so you can technically skip using the macro.

Version-Release number of selected component (if applicable):
libghemical-3.0.0-9.fc29

Additional information:
OpenBLAS selects best code path for the target architecture at runtime unlike ATLAS.

A lot of benchmarks around the net suggest openblas is faster than ATLAS in most workloads:
https://github.com/tmolteno/necpp/issues/18
http://blog.nguyenvq.com/blog/2014/11/10/optimized-r-and-python-standard-blas-vs-atlas-vs-openblas-vs-mkl/
https://freddie.witherden.org/pages/blas-gemm-bench/
http://nghiaho.com/?p=1726

Many Fedora packages have switched to openblas already (e.g. scalapack and all dependent ones and numpy).

Comment 1 Ben Cotton 2019-08-13 16:59:17 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to '31'.

Comment 2 Ben Cotton 2019-08-13 19:45:56 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to 31.

Comment 3 Dominik 'Rathann' Mierzejewski 2020-08-21 11:11:50 UTC
Closing in favour of FlexiBLAS.


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