Re: memory error question

Hi Jacob,

One of the places you can look if you start seeing memory allocation
problems is if you are creating a lot of arrays, but not freeing them
up with "delete" after you are done with them. You already have quite
a few "delete" calls in your script, but it might be helpful if you
could add more.

I believe, yes, in this case you are running out of physical memory,
and deleting some arrays should help.

The killer might be the triple do loop in which you are calling addfile
inside the innermost loop, and then reading a bunch of variables off
the file.

For example, you have code like this:

   SOILW00_01 = SOILW(0,:,:)
   SOILW01_04 = SOILW(1,:,:)
   SOILW04_10 = SOILW(2,:,:)
   SOILW10_20 = SOILW(3,:,:)

in which I think SOILW is not being used after this point, so you
could delete it.

It might help us to know the intention of this program, so that
we could suggest some other ways to do this kind of heavy file i/o
and processing.

Cheers,

--Mary

On Tue, 3 Jul 2007 Jacob.Klee_at_dom.com wrote:

>
> Hello all,
>
> I have recived the error: fatal:NhlMalloc Failed:[errno=12]:Cannot allocate
> memory while running a memory intensive script. If my own memory has not
> yet failed, I remember this translates to running out of physical memory?
>
> I am running the prerelease of ....3.0 for CYGWIN on an XP machine with 4gb
> ram. I have included below the related files to my error.
>
> My questions are these: am I truly running out of memory? If so, any
> sugestions? If not, what is happening? (If anyone wants to run this, I
> would be happy to provide a handfull of the subseted NARR grib files I am
> using.)
>
>
>
> -- Jacob Klee
>
> (See attached file: ncl.exe.stackdump)(See attached file: DCP_trimmed.log)
> (See attached file: DomConvectParams_test.ncl)(See attached file:
> .hluresfile)
>
>
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Received on Tue Jul 03 2007 - 10:35:06 MDT