Newsgroups: comp.parallel.pvm
From: vernard@cc.gatech.edu (Vernard C. Martin)
Subject: Re: PVM on SP2 switch
Organization: Georgia Institute of Technology
Date: 31 Aug 1995 16:57:28 -0400
Message-ID: <4257no$s4r@cleon.cc.gatech.edu>

rlf@tower.tc.cornell.edu (Bob Feldman) wrote:
>I've been trying to run PVM 3.3.8 over the SP2 high-speed
>switch, but have not been wholly successful yet.  I'm just running a
>simple "hello world" program in master/worker mode.  The
>master starts up, seems to spawn the workers all right,
>but the messages to stdout from the workers don't appear, and
>the master program then hangs.   Anyone
>had success with the SP2 version?

I've managed to get that to work with no problem.

For interactive runs, I had to connect to the node via the switch interface.
that way when you startup pvm, its already using the high speed switch names
and you then can do the "add host_via_switch_name" and run your programs. The
speedup is pretty good too.

For batch runs using LoadLeveler, I had to specify "hps_user" or "hps_ip" in
the Requirements line to make sure that it used the switch in either
exclusive or shared modes respectively. The line is below. I also had to
make sure that the job_type was PVM and the class was parallel.

# @ Requirements = ( Adapter == "hps_user" )
# @ class = parallel
# @ job_type = PVM3

hope this helps
V
-- 
Vernard Martin
(vernard.martin@cc.gatech.edu) http://www.cc.gatech.edu/people/home/vernard/
College of Computing, Georgia Institute of Technology, Atlanta, GA 30332
"Only the good die young. The bad prefer it that way." - goblin proverb

