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Re: Low CPU usage

• To: mathgroup at smc.vnet.net
• Subject: [mg122229] Re: Low CPU usage
• From: Oliver Ruebenkoenig <ruebenko at wolfram.com>
• Date: Fri, 21 Oct 2011 06:25:43 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201110181142.HAA08932@smc.vnet.net>

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
>
>

-- 

Ben,

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

Oliver

• References:
  • Low CPU usage
    • From: Ben Gear <bjgear@googlemail.com>