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Re: Low CPU usage

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  • Subject: [mg122229] Re: Low CPU usage
  • From: Oliver Ruebenkoenig <ruebenko at>
  • Date: Fri, 21 Oct 2011 06:25:43 -0400 (EDT)
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On Tue, 18 Oct 2011, Ben Gear wrote:

> All,
> Frequently when Mathematica is trying to evaluate an expression the CPU usage on my machine seems remarkably low; one core will be ~70% with the others only up to ~20%.  I'd expect one core at least to be maxed out. The hard disk isn't being hammered, RAM usage doesn't increase, so my question is: where is the bottle neck? I'm new to Mathematica so is this normal behaviour? I'm using 64 bit Win 7.
> On a related note some of my expressions just don't seem to ever return, particularly those involving Sum[] - again, is this normal?
> My experience with Mathematica so far has mostly been frustrating.  I can get it to do dead simple things, but anything vaguely complex it seems to choke on. Just getting it to replicate what I can do by hand seems an uphill struggle. Do many use it professionally or is it mainly used in education?
> Regards,
> Ben



could you send an example. That would make it easier to talk about the 
issue you are seeing.


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