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MathGroup Archive 1998

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Mathematica lock-up when comsuming Win95 system resources

  • To: mathgroup at smc.vnet.net
  • Subject: [mg13619] Mathematica lock-up when comsuming Win95 system resources
  • From: "L. Dwynn Lafleur" <lafleur at usl.edu>
  • Date: Fri, 7 Aug 1998 03:08:21 -0400
  • Organization: University of Southwestern Louisiana
  • Sender: owner-wri-mathgroup at wolfram.com

I am using Mathematica 3.0.1 under Windows 95.  Occasionally, when
executing a cell involving a large multidimensional list, Mathematica
will slowly consume all system resources and lock up.  No doubt, this
is because I am making a programming error that results in Mathematica
trying to do a ridiculously large amount of work.

Since I have the system resource meter running in the tray, I can see
the freeze coming, but all the attempts to abort the calculation fail. 
Right before the lock-up, Win95 posts a warning that 90% of its
resources are used up, but I can't do anything about it.  The only way
out is to Ctl-Alt-Del and shut Mathematica down.  Of course, that means
all the work since the last notebook save is lost.

Does anyone have advice on how to avoid this situation (other than being
a better Mathematica programmer, which might eventually happen)? Of
course, I could get into the habit of saving the notebook before each
and every execution.  Is that the only solution?

Thanks for any help.

Dwynn

-- 

=========================================== L. Dwynn Lafleur
Professor of Physics
The University of Southwestern Louisiana Lafayette, Louisiana  (USA)
lafleur at usl.edu               
===========================================


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