Newsgroups: comp.parallel.mpi
From: Aaron Focacci <afocacci@vt.edu>
Subject: Error message using MPI with Fortran
Organization: Virginia Tech, Blacksburg, Virginia
Date: Wed, 17 Jun 1998 18:51:37 -0400
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Message-ID: <35884879.60C793A@vt.edu>

Whenever I try to call MPI_Gather, I get the message:

p0_102: (4.667000) xx_shmalloc: returning NULL; requested 1064 bytes
p0_102: (4.667000) p4_shmalloc  returning NULL; request  =  1064 bytes

I had a similar problem when I used scatter with a 2MB mesage, but when
I shortened the message, scatter worked fine.  I'm running a machine
with 256MB of ram, so I don't understand why it can't allocate such a
small amount.

-Aaron Focacci