| Re: Memory Hard Limits in IDL5? [message #10130] |
Fri, 17 October 1997 00:00 |
Stein Vidar Hagfors H
Messages: 32
Registered: May 1997
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Elaine Chapin wrote:
>
> I am using a machine with 4 Gigabytes of RAM. I enter idl5 and
> say
>
> aa=fltarr(23170,23170)
>
> which should use only 23170*23170*4=2147395600 bytes=1.99 Gigabytes
> and yet I get the message
>
> % Unable to allocate memory: to make array.
> Not enough space
> % Execution halted at: $MAIN$
>
> I thought that all the hard limits were supposed to be gone from
> idl5? Any suggestions or comments?
It would be nice to know what platform you're using.. but:
My guess is that you're having trouble with the memory limit
set by your shell, effective for its child processes:
To see the limits that are in effect, just type
unix> limit
Try e.g.,
unix> limit memoryuse 4096m
unix> limit vmemoryuse 4096m
unix> limit datasize 4096m
and restart IDL.
Speaking of limit(1), how many times has any one of you *looked*
at the contents of a core file?
Try
unix> limit coredumpsize 0
and you'll never need to wait for a core to be dumped again,
and you won't get your disk space eaten up by huge dumps.
Stein Vidar
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