MathGroup Archive 2004

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Use of large memory

  • To: mathgroup at
  • Subject: [mg50422] Re: [mg50412] Use of large memory
  • From: "Virgilio, Vincent" <Vincent.Virgilio at>
  • Date: Fri, 3 Sep 2004 03:35:07 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

> -----Original Message-----
> From: Gerry Flanagan [mailto:flanagan at]
To: mathgroup at
> Sent: Thursday, September 02, 2004 3:35 AM
> To: mathgroup at
> Subject: [mg50422] [mg50412] Use of large memory
> I was running into memory limits for a large numerical problem in V5.0. The
> fastest fix (I thought) was to get a large amount of RAM. We purchased a
> Pentium 4 machine running XP, with 4GB of memory. I built a test function
> that progressively uses more memory and prints MemoryUsed[].
> Every time I get to just under 2GB of memory, I get the out-of-memory
> error from the  kernal. There's nothing else running, and task manager says
> there's plenty left. Has anyone found some Windows XP tweak that allows
> Mathematica to use what's available? Would this all work better in Linux?
> Gerry Flanagan

Hi Gerry,

Investigate the XP boot-time switches '/3gb' and '/userva'.

*** N.B. They are dangerous; see;en-us;328269

Even if they work safely for you, the *per-process* memory limit might
only increase to ~ 2.75 GB.

Vince Virgilio

This e-mail and any files transmitted with it are proprietary and intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Industries, Inc. The recipient should check this e-mail and any attachments for the presence of viruses. ITT Industries accepts no liability for any damage caused by any virus transmitted by this e-mail.

  • Prev by Date: Re: Package and options
  • Next by Date: Re: Sorting (again!), but with multiple columns
  • Previous by thread: Re: Use of large memory
  • Next by thread: Re: Use of large memory