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Re: swap usage


  • To: mathgroup@smc.vnet.net
  • Subject: [mg12552] Re: swap usage
  • From: "James S. Graber" <jgra@loc.gov>
  • Date: Sat, 23 May 1998 18:11:14 -0400
  • Organization: Library of Congress
  • References: <6j3h1p$chf@smc.vnet.net> <6jevmj$3br@smc.vnet.net>


P.J. Hinton wrote:

> On 10 May 1998, Arturas Acus wrote:
>
> > Recently I have made some lenghty calculations  on Win95 (P166MHz) with
> > 32Mb RAM and 300Mb swap.
> >
> > Calculations sometimes used up to 240Mb. (when tested with
> > MaxMemoryUsed[]) Everything was fine with functions like ExpToTrig,
> > Expand, TrigToExp, Factor,  etc., but not with Simplify or
> > FullSimplify. It looks for me that this two functions can not use  swap
> > at all and exits with "Out of memory" message when all physical memory
> > (32Mb is loaded). If stated abov is true, then it would be interesting
> > to know all functions which can not use swap in order to save time.
>
> The spurious "Out of memory" messages that you see are not due to any
> inherent inability to use swap space.  It is more likely that they are
> due to a different problem altogether.  You may want to consult the
> Technical Support FAQ page at URL:
>
>   http://www.wolfram.com/support/Systems/Windows/OutOfMemory.html
>
> for a free, downloadable patch that may fix the problems you're
> encountering.
>
> --
> P.J. Hinton
> Mathematica Programming Group           paulh@wolfram.com Wolfram
> Research, Inc.                  http://www.wolfram.com/~paulh/
> Disclaimer: Opinions expressed herein are those of the author alone.

  I have been having similar problems.  I am very thankful that I found
this post and the available fix.  Thank you. Jim Graber




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