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RE: Re: Multi-core Support in Mathematica 5.2

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  • Subject: [mg74101] RE: [mg74083] Re: Multi-core Support in Mathematica 5.2
  • From: "Virgilio, Vincent - SSD" <Vincent.Virgilio at>
  • Date: Sat, 10 Mar 2007 06:50:06 -0500 (EST)

I think Mathematica uses multiple cores through the OpenMP API. So isn't
it necessary to set the environment variable OMP_NUM_THREADS

Vince Virgilio

-----Original Message-----
From: David Bailey [mailto:dave at]
Sent: Friday, March 09, 2007 2:01 AM
To: mathgroup at
Subject: [mg74101] [mg74083] Re: Multi-core Support in Mathematica 5.2

dwadding at wrote:
> Hi,
> Wolfram advertises version 5.2 as being multi-core capable.  When I
> use the standard vectorized operations I can only get things to run on

> one core.  Can some one tell me exactly which Mathematica functions
> can actually exploit multi-core?
> Thanks,
> Daniel

Here is a link with some details:

I suspect it is hard to parallelise ordinary code - even functional code
- because I can't imagine the kernel can run on more than one thread!

David Bailey

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