Gentoo Archives: gentoo-science

From: justin <jlec@g.o>
To: gentoo-science@l.g.o
Subject: Re: [gentoo-science] sci-libs/atlas from science overlay - is it multithreaded?
Date: Tue, 09 Apr 2013 13:49:07
Message-Id: 51641C4E.2090502@gentoo.org
In Reply to: [gentoo-science] sci-libs/atlas from science overlay - is it multithreaded? by "Xavier Fernández i Marín"
1 On 09/04/13 15:40, Xavier Fernández i Marín wrote:
2 > Dear all,
3 >
4 > After some years with the official blas and lapack libraries from atlas
5 > several weeks ago these packages were discontinued in the official portage
6 > tree, being replaced by the science overlay. I've tried to get the same
7 > functionality than before, but with no luck.
8 >
9 > I used to run sci-mathematics/jags compiled against the atlas-threaded
10 > libraries, and when simulating more than one chain all processors were used
11 > in parallel. But now, with the current sci-libs/atlas libraries this is not
12 > the case anymore.
13 >
14 > I have also tried to link jags against openblas, but without luck as well.
15 >
16 > I have also tried to compile it against mkl using openmp and even compile
17 > jags without using the official ebuild.
18 >
19 > So my questions are:
20 >
21 > - Is there a way to check that atlas is using multithreaded capacities,
22 > besides checking the libraries towards which it is compiled?
23 >
24 > - What has atlas changed between the last unstable ebuild from the
25 > official portage tree and the last unstable ebuild from the science
26 > overlay?
27 >
28 > - Any guess on how I can make use of multithreading in jags in gentoo?
29 >
30
31 Could you provide me a sample script which should run jags in parallel?
32
33 Justin

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Re: [gentoo-science] sci-libs/atlas from science overlay - is it multithreaded? "Xavier Fernández i Marín" <xfim.ll@×××××.com>