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[Octave-bug-tracker] [bug #41192] Basic matrix inversion fails in MSVC b
From: |
Michael Goffioul |
Subject: |
[Octave-bug-tracker] [bug #41192] Basic matrix inversion fails in MSVC build for Windows |
Date: |
Mon, 24 Feb 2014 03:44:55 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36 |
Update of bug #41192 (project octave):
Status: Need Info => Wont Fix
Open/Closed: Open => Closed
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Follow-up Comment #12:
After testing, it appears the problem lies in OpenBLAS. If you select another
linear algebra library during installation, the problem does not occur.
The Octave/MSVC 3.6.4 still uses OpenBLAS-0.2.2. I've tried with a newer
version of OpenBLAS, 0.2.8, and the problem does not occur either. Looking at
OpenBLAS changelog, a couple of bugs have been fixed in gemm/gemv computation
on x86/x86_64 CPU. I think you may have hit one of those bugs.
I've uploaded this newer OpenBLAS library here:
https://dl.dropboxusercontent.com/u/45539519/vc100-libblas_openblas.dll
Install it into octave bin/ subdirectory, as vc100-libblas.dll. This is only
needed if OpenBLAS was selected as linear algebra library during
installation.
I'm closing this bug as it'll be fixed automatically when a new Octave/MSVC
binary is ever generated.
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