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Re: Octave and multicore processors
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From: |
Thomas Weber |
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Subject: |
Re: Octave and multicore processors |
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Date: |
Thu, 26 Mar 2009 23:27:10 +0100 |
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User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Thu, Mar 26, 2009 at 05:29:29AM -0700, Marcin Sleczka wrote:
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>
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> Jaroslav Hajek-2 wrote:
> >
> > I'm curious: what makes you expect Octave should use two cores?
> >
> I thought that Octave will try to do this calculation as fast as he can. So
> he should use all processors (cores), but he uses only one. Is this normal
> that if I've got Mac Pro with 2 processors and 8 cores Octave will use only
> one? My caculations will take an hour instead 10 minutes (7 cores are on
> holiday? :-) Can I force them to work?
Depends. Octave tries pretty hard to use optimized routines from
external libraries (eg ATLAS). So, if your libraries can use several
cores, so should Octave.
Thomas