| Re: IDL memory limits [message #1381] |
Tue, 12 October 1993 08:31 |
jim
Messages: 7
Registered: August 1993
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Junior Member |
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In article <293ieq$dtn@honey.st-and.ac.uk> so1@st-andrews.ac.uk (Sean Oughton)
writes:
> I'm processing some large 3 index arrays using IDL (98 x 96 x 96).
> ALtogether I need 9 of them active at once, but the msg I get when I
> run the .pro's is
>
> Unable to allocate memory: to make array
> not enough core.
>
Try the command
.size 20000 30000
The first argument allocates space for larger code
(which you probably don't need) and the second allocates
data space. Try larger values for the second argument.
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| RE: IDL memory limits [message #1383 is a reply to message #1381] |
Mon, 11 October 1993 22:55  |
nowicki
Messages: 11
Registered: May 1993
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Junior Member |
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In Article <293ieq$dtn@honey.st-and.ac.uk>
so1@st-andrews.ac.uk (Sean Oughton) writes:
> Hi,
>
> I'm processing some large 3 index arrays using IDL (98 x 96 x 96).
> ALtogether I need 9 of them active at once, but the msg I get when I
> run the .pro's is
>
> Unable to allocate memory: to make array
> not enough core.
>
> Is this an intrinisc IDL limitation or a h/w limit on my host machine
> (a VAXstation with 56 MB)?
>
> Has anyone else run into problems like this? ANy solutions/workarounds
> to suggest ?
>
> Thanks
>
> sean@tartan.dcs.st-and.ac.uk
Sean,
This error is causing by not allocating enough resources to handle all of
the arrays at one time. You need to look at several SYSUAF parameters as
they pertain to the username running IDL. These are: WSextent, WSquo,
and Pgflquo. There are some SYSGEN parameters that also may need tweeking.
Mail me for more info.
NOTE: By optimizing our IDL code, we have been able to put larger and
larger arrays without changing the accounts. This includes the use of
temporary arrays.
-Greg
/* Greg Nowicki | Mail Stop 401A | LIDAR Applications Group */
/* NASA Langley Research Center | Hampton, Virginia 23681-0001 */
/* Voice: (804) 864-2713 | FAX: (804) 864-7790 */
/* nowicki@tardis.larc.nasa.gov | My opinions and mine alone . . . */
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