From: Jaume Catarineu <jaume.catarineu@econ.upf.es>
Newsgroups: comp.parallel.mpi
Subject: possible bug?
Date: Tue, 25 May 1999 16:42:40 +0200
Organization: CESCA News service. Catalunya
Message-Id: <374AB6E0.EFD053B6@econ.upf.es>
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Xref: ukc comp.parallel.mpi:5126


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Hi,

I have the following problem executing an MPILAM application:
  Cluster structure: 2 nodes
  working directory on node 1: /home/jaume/bin/
  working directory on node 2: /home/jaume/bin/  (that is a NFS image
from node1)

When I execute my program I take this error:

  $ mpirun -np 4 myprogram
  mpirun: cannot start myprogram on n1: No such file or directory

After reading the manual file I try to execute like this

  $ mpirun -np 4 $PWD/myprogram

And it works... BUT if my application doesn't try to open a file.
In this case I get the follow message:

  $ mpirun -np 4 $PWD/myprogram
open: No such file or directory
apparent state: unit 8 named pclusterpar.dat
lately writing direct unformatted internal IO
MPI_Recv: process in local group is dead (rank 0, MPI_COMM_WORLD)
2314 (n1) exited with status 1

After reading twice the manual I see that MPILAM tries to execute
the foreign-nodes-copies of the program in the login directory of
these nodes. So I supose I thought I'll solve the problem setting
the ~/bin directory as the user's login directory in the foreign 
node. When executing nothing changed:

  $ mpirun -np 4 cpi
mpirun: cannot start cpi on n0 (o): No such file or directory

Even with the '-D' option I take the same result.


* How can I have my own directories structure and execute my 
  parallel programs wherever I want without problems?
  How can I deal with the foreign working directory?

Thanks you in advance,
Jaume,
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