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Re: Low CPU usage

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  • Subject: [mg122185] Re: Low CPU usage
  • From: "mathgroup " <fizzymath at>
  • Date: Wed, 19 Oct 2011 05:35:29 -0400 (EDT)
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I can't answer your question , however, would like , for what it's worth, to 
tell you my experience....

When I first started Mathematica it was frustrating as hell.....the only 
thing that saved me from throwing in the towel  was Mathgroup....and their 
Expertise is FREE....Amazing!!!

After a while I reached the point where you can't tear me away from 
Mathematica....there are too many things of value in it for me....too many 
things that I can do with it that, by hand, would be abominable or 
impossible.....I think Mathematica has endless applications whether 
Education or Professionally and is only hampered by the Imagination of the 

jerry blimbaum

-----Original Message----- 
From: Ben Gear
Sent: Tuesday, October 18, 2011 6:42 AM
To: mathgroup at
Subject: [mg122185] Low CPU usage


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?



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