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MathGroup Archive 2004

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Parallel Toolkit Example

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50425] Parallel Toolkit Example
  • From: Geoff Hulette <ghulette at collidescope.net>
  • Date: Fri, 3 Sep 2004 03:35:13 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

I am looking for an efficient example of using the Parallel Toolkit.  
Many other people on this forum seem to have noted what I have also 
found to be the case, that the ParallelMap and ParallelTable commands 
aren't terribly efficient.  The example code in ParEval.nb, for 
instance

ParallelMap[FactorInteger, (10^Range[20, 40] )/9]

only seems to run about 20% faster on a six-node cluster vs my laptop.  
Does anyone have an example of how to solve this same problem using an 
efficient parallel technique?  I am fairly new to Mathematica, so 
please be explicit.

Thanks,
-geoff

Geoff Hulette
MIT Academic Computing
ghulette at mit.edu


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