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Re: IDL - freeing up used memory? [message #84376 is a reply to message #84374]

Wed, 29 May 2013 10:20

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

AMS writes:

> I'm running into a memory issue which I am not certain whether is related to my IDL code or the machine the code is running on itself, and am wondering whether someone might be able to help me out. To start with, I'm using IDL 7.1.1 on CentOS, invoking via command line.
>
I think your memory is getting fragmented. I would think about doing two
things. First, I wouldn't set your unused variables to 0, as I think
that promotes fragmentation. I would use the Coyote Library routine
UNDEFINE to get rid of them:

http://www.idlcoyote.com/programs/undefine.pro

But, maybe better than this, I would try (assuming they are always the
same size) to reuse the memory you have already set aside for reading in
the variables:

FOR j=0,n DO ....
IF N_Elements(inputVar) EQ 0 THEN $
inputVar = ... ELSE $
inputVar = Temporary(inputVar) * 0
ReadU, lun, inputvar

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Re: IDL - freeing up used memory? By: Andy Sayer on Wed, 29 May 2013 10:43
		Re: IDL - freeing up used memory? By: David Fanning on Wed, 29 May 2013 10:20
		Re: IDL - freeing up used memory? By: ptomar2006 on Mon, 22 December 2014 05:05
		Re: IDL - freeing up used memory? By: Helder Marchetto on Mon, 22 December 2014 05:53
		Re: IDL - freeing up used memory? By: Andy Sayer on Fri, 31 May 2013 06:32

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