Re: Can't Create Child Processes

From: daryl herzmann <akrherz_at_nyahnyahspammersnyahnyah>
Date: Mon Sep 27 2010 - 14:25:44 MDT

On Mon, 27 Sep 2010, Capehart, William J wrote:

> I’m doing a goodly amount of file management in one of my
> post-processing scripts where I am gunzipping and re-gzipping data
> before and behind me as I march through a lot of model output.
>
> Recently, I’ve been hitting these errors when I use the function
> “systemfunc”:
>
> fatal:systemfunc: cannot create child process:[errno=12]
>
> Ideas? Note that the system() subroutine yields no such error. BUT.
> Instead, it fails to execute the requested shell command and keeps going
> drunkenly onward until it tries to open a file that hasn’t been gunziped
> or similar crash.

This sounds like you are running out of file descriptors. You are probably
hitting 1024 open files (ulimit -n will display the limit). Are you
certain you are closing files and cleaning up after yourself as you march
along? Is this NetCDF data?

daryl

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Received on Mon Sep 27 14:25:55 2010

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