From: Mark Hampsey <markh@engmail.spamnewcastle.edu.au>
Newsgroups: comp.parallel.pvm
Subject: insane XPVM problem
Date: Tue, 04 May 1999 17:32:44 +1000
Organization: University of Newcastle, Australia
Message-Id: <372EA29C.BFA28878@engmail.spamnewcastle.edu.au>
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Xref: ukc comp.parallel.pvm:8337


hello,

I have a program that uses PVM 3.4 and employs dynamic load balancing
much like the example problem hitc.f (although mine is written in
c++).   The
program works very well when started from the command line - but not in
XPVM 1.2.5.  All of the example programs work well in XPVM, so it's not
an installation error and all of my own simple programs (not using
dynamic
load balancing) work equally well, so it probably isn't my humble
programming
abilities at fault.

Symptoms are: XPVM freezes as soon as the program is spawned, the "time"

indictator slows right down (just about stops, but not quite), lots of
disk activity,
and, basically, the master node on my cluster auto-euthanises (not
nice).

I assume it is a memory suckage problem, and since this program works
so well when started on the command line I am wondering whether anyone
has experienced similar annoyances with XPVM.

I am running:  Intel based Beowulf cluster
                       RedHat Linux 5.2 with 2.2.6 kernel
                       128MB RAM on master node

Thanks for your help