Your message dated Mon, 24 Feb 2014 22:47:05 +0000
with message-id <[email protected]>
and subject line Bug#739331: fixed in openblas 0.1.1-6+deb7u3
has caused the Debian Bug report #739331,
regarding libopenblas-base: hangs when called from an OpenMP application
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
739331: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739331
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libopenblas-base
Version: 0.1.1-6
Severity: important
Tags: upstream patch
Control: fixed -1 0.2.8-3
Control: forwarded -1 https://github.com/xianyi/OpenBLAS/issues/294
OpenBLAS, when compiled with pthreads, hangs when it is called from an
application using OpenMP.
See the attached R code which hangs with affected versions of OpenBLAS.
In 0.2.8-3, the solution adopted was to compile OpenBLAS with OpenMP. But this
creates other problems (see #737675).
The right solution seems to revert to a pthreads version of OpenBLAS, and apply
the patch there:
https://github.com/xianyi/OpenBLAS/issues/294#issuecomment-33536895
--
.''`. Sébastien Villemot
: :' : Debian Developer
`. `' http://www.dynare.org/sebastien
`- GPG Key: 4096R/381A7594
library(parallel)
num.cores <- 4
f <- function(x)
{
n <- 40
A <- replicate(n, rnorm(n))
B <- replicate(n, rnorm(n))
rcond(A %*% B)
}
z <- 1:8
mclapply(z, f, mc.cores = num.cores)
signature.asc
Description: Digital signature
--- End Message ---
--- Begin Message ---
Source: openblas
Source-Version: 0.1.1-6+deb7u3
We believe that the bug you reported is fixed in the latest version of
openblas, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Sébastien Villemot <[email protected]> (supplier of updated openblas package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Wed, 19 Feb 2014 18:41:55 +0100
Source: openblas
Binary: libopenblas-base libopenblas-dev
Architecture: source amd64
Version: 0.1.1-6+deb7u3
Distribution: wheezy
Urgency: low
Maintainer: Debian Science Team
<[email protected]>
Changed-By: Sébastien Villemot <[email protected]>
Description:
libopenblas-base - Optimized BLAS (linear algebra) library based on GotoBLAS2
libopenblas-dev - Optimized BLAS (linear algebra) library based on GotoBLAS2
Closes: 739331
Changes:
openblas (0.1.1-6+deb7u3) wheezy; urgency=low
.
* fork-handler.patch: fixes hangs of OpenBLAS when called from a program
using OpenMP (Closes: #739331)
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