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Re: Question on IDL Error: Unable to free memory: from array descriptor [message #34688]

Mon, 07 April 2003 10:10

Dick Jackson
Messages: 347
Registered: August 1998

Senior Member

Hi Ken,

"Ken Knapp" <Ken.Knapp@noaa.gov> wrote in message
news:6146a9fd.0304030627.361c402e@posting.google.com...
>
> PROBLEM:
> When processing satellite code, sometimes IDL bombs out with the
> following message:
> Loop over image
> % Unable to free memory: from array descriptor.
> Interrupted system call
> % Execution halted at: PROC_TAU 1634
> /home/kknapp/work/lib/idl/goes/gasp9.pro
>
> [...]
>
> SYSTEM:
> Linux Redhat 7.1
> IDL 5.6 (recent upgrade)
> -plenty of RAM (1Gb) and swap

David's idea (too much memory) is plausible, in that it can make us
think we're invincible to memory shortages! A client of mine got a 2GB
machine, and we promptly found a way to exhaust it with some insanely
large images and processing methods.

Since the error message mentioned "array descriptor" I thought of an
issue that came up for me a while ago. The issue is summarized at:
http://www.dfanning.com/misc_tips/submemory.html

Any big array subscripting going on around line 1634? (don't know why
"Unable to free memory" would be the problem, but have a look anyway)

Cheers,
--
-Dick

Dick Jackson / dick@d-jackson.com
D-Jackson Software Consulting / http://www.d-jackson.com
Calgary, Alberta, Canada / +1-403-242-7398 / Fax: 241-7392

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[Message index]

		Re: Question on IDL Error: Unable to free memory: from array descriptor By: Dick Jackson on Mon, 07 April 2003 10:10
		Re: Question on IDL Error: Unable to free memory: from array descriptor By: Ken Knapp on Fri, 04 April 2003 06:45
		Re: Question on IDL Error: Unable to free memory: from array descriptor By: David Fanning on Thu, 03 April 2003 06:41
		Re: Question on IDL Error: Unable to free memory: from array descriptor By: K. Bowman on Thu, 17 April 2003 07:00

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