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Re: Array has too many elements? [message #37510 is a reply to message #37504]

Fri, 19 December 2003 01:23

Jamie
Messages: 4
Registered: December 2003

Junior Member

Take a look at the idl/external/export.h file that came with IDL as this
defines most of the limits. You, of course, cannot change them but it is
helpful to know what they are. In particular, getting beyond the 32-bit
address limit is problematic and very OS dependent. Unless I missed
something in version 6, IDL is still compiled as a 32-bit application.

See:
http://www.rsinc.com/services/techtip.asp?ttid=2597
http://www.rsinc.com/services/techtip.asp?ttid=3617

Or do a search for 'memory' in:
http://www.rsinc.com/services/search.asp

Jamie

On Fri, 19 Dec 2003, Jonathan Greenberg wrote:

> Followup question -- I've now come across a lot of discussion about windows
> boxes and memory problems under IDL (David Fanning, thats a terrific website
> you have (http://www.dfanning.com/)-- wish I had found it a few weeks ago!).
> Do these problems simply not exist on UNIX boxes (given ample amount of RAM
> + pagefile space)? I reprogrammed a slow but memory conservative version of
> this algorithm I'm working on using a bunch of for-next loops -- after all
> the discussion I've been seeing about how for-next loops stink, I recoded
> the algorithm using mostly matrix calls -- but of course I need more memory
> to do these, hence the array has too many elements error. I'm tempted to
> switch over to a slower UNIX box if this memory problem won't show up...
> thoughts?
>
> --j
>
> "Jonathan Greenberg" <greenberg@ucdavis.edu> wrote in message
> news:amyEb.209$rX6.10@newssvr29.news.prodigy.com...
>> Is there some intrinsic limitation in how big an array can get in IDL?
> The
>> one in question was a fltarr of 170 x ~ 4,000,000 which gave me the "Array
>> has too many elements." error. I have about 2gb of memory on my machine,
>> and a 2 gb pagefile. Did I simply run out of memory, or is there
> something
>> else going on here?
>>
>> --j

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[Message index]

		Re: Array has too many elements? By: JD Smith on Mon, 22 December 2003 14:01
		Re: Array has too many elements? By: Jonathan Greenberg on Mon, 22 December 2003 13:35
		Re: Array has too many elements? By: Jamie on Mon, 22 December 2003 10:32
		Re: Array has too many elements? By: Jonathan Greenberg on Fri, 19 December 2003 11:54
		Re: Array has too many elements? By: Michael Wallace on Fri, 19 December 2003 08:46
		Re: Array has too many elements? By: Michael Wallace on Fri, 19 December 2003 08:32
		Re: Array has too many elements? By: Jamie on Fri, 19 December 2003 01:23
		Re: Array has too many elements? By: Bringfried Stecklum on Fri, 19 December 2003 03:00
		Re: Array has too many elements? By: Jonathan Greenberg on Fri, 19 December 2003 00:51

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