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From: Nihar Sanghvi (nsanghvi_at_[hidden])
Date: 2004-02-11 09:39:55


I would say that the path you are setting is not able to find the
executables on the nodes you are trying to scale mpi processes.

Also it might help if you can provide the output of lamboot and mpirun for
further investigation.

Nihar

>After help from members of this list, I was able to get lam-mpi functioning
>under LSF on hpux 11.23 (the workaround was to unset the LSB_JOBID and
>LSB_JOBINDEX environment variables). When I try to scale up from the
>neighborhood of mpi processes, I start getting problems similar to the ones
>I had previously - lamboot runs, but using mpirun to run the software
>produces a message that the lamd process isn't present. lamd is running -
>at least, lamnodes returns correct information after lamboot is run.
>Are there any other environment variables that have to be unset, or similar
>kludges needed to get 6.5.9 to work?
>
>I am appending a copy of script used to run the job. The actual mpi program
>to be run, and its arguments, are arguments to the script.
>
>Thanks
>Chuck Fisher
>chuck_at_[hidden]
>
>------------------------------------------------------------------------
>#!/usr/bin/csh
>
>set tokens=($LSB_MCPU_HOSTS)
>set user=`whoami`
>
>if (-e lam-bhost.def) then
> echo "lam-bhost.def already exists in" `pwd`
> echo "exiting"
> exit
>endif
>
>@ num=0
>while ($#tokens)
> echo "$tokens[1] cpu=$tokens[2]" >> lam-bhost.def
> @ num = $num + $tokens[2];
> shift tokens
> shift tokens
>end
>
>set opath=( $path )
>set path=( /scratch/vviti/AeroSoft/lam-6.5/bin $path )
>
>setenv LAMHOME "/scratch/vviti/AeroSoft/lam-6.5"
>setenv LAMHELPFILE "/scratch/vviti/AeroSoft/lam-6.5/etc/lam-helpfile"
>setenv AEROSOFT_HOME "/scratch/vviti/AeroSoft"
>setenv AEROSOFT_ELMHOST "@sdx0.uky.edu"
>
>unsetenv LSB_JOBID
>unsetenv LSB_JOBINDEX
>
>lamboot -x lam-bhost.def
>
>mpirun -np $num $argv
>
>lamhalt
>
>rm lam-bhost.def
>set path=( $opath )
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Nihar Sanghvi
LAM/MPI Team
Graduate Student (Indiana University)
http://www.lam-mpi.org
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