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Re: Computing resources

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98363] Re: Computing resources
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Wed, 8 Apr 2009 02:50:00 -0400 (EDT)
  • References: <grcge7$ph7$1@smc.vnet.net>

Filippo,

This is not strange. Most of the programs you have only use one core.
Only a few will use more than one. Some games can do it, some
photoshop filters... The Mathematica kernel also runs in one core.
However, as of 7, Mathematica has parallelism built-in. This is not an
automatic process though, and many programs and algorithms are not
suited for parallelization. For an overview of parallelization
functions, see guide/ParallelComputing or
http://wolfram.com/products/mathematica/newin7/content/BuiltInParallelCompu=
ting/

Cheers -- Sjoerd

On Apr 6, 11:01 am, Filippo Miatto <mia... at gmail.com> wrote:
> Dear all,
> During a long computation I opened the taskmanager in windows and I  
> realized that Mathematica (7) uses only one out of 4 cores on my  
> machine.
> Do you know why this is happening? Do you have the same problem?
> is is something that has to do with mathematica or with windows?
> Thank you in advance
> Filippo
>
> PS I'm running Mathematica 7 on a Quad core Xeon, 16Gb of ram, windows =
 
> professional 64 bit edition.



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