Newsgroups: comp.parallel.mpi
From: "Georg P. Israel" <g.israel@ieee.org>
Subject: mpirun .... Permission denied
Organization: IBT - ETH
Date: Tue, 03 Dec 1996 17:50:18 +0100
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Message-ID: <32A45A4A.DEE5857@ieee.org>

Hallo,

I have (more or less successfully) compiled and installed MPICH on my
Linux box.
Initially, everything seems to run just fine
e.g. if I do something like:

[georg@zaphod examples]$ ./mpirun -np 1 cpi
./mpirun: /usr/zaphod/mpi/examples/PI654: Permission denied
Process 0 on zaphod.ethz.ch
pi is approximately 3.1416009869231254, Error is 0.0000083333333323
wall clock time = 0.038426


I just don't know what the second message means (Permission denied) !
But if I want to use more then one processing element

[georg@zaphod examples]$ ./mpirun -np 2 cpi
./mpirun: /usr/zaphod/mpi/examples/PI707: Permission denied
Permission denied.

then, that machine hangs forever!!

I have included all the machines that I'm using in the
util/machines/machines.LINUX file.
They all run under the same NIS server and all do have the /usr
directory NFS mounted.
However, all of them run a <sshd>. Maybe, the error is due to this?
Actually, I don't like to admit it but I don't have a clue how this MPI
stuff is supposed to work. Does it communicate via rsh or something
similar?

I would very much appreciate if anybody could give me a clue.

Georg (without a clue)

-- 


----------------------------------------------------------------------
Georg P. Israel                 Phone:        +41-1-6324583
IBT                             Fax:          +41-1-6321214
Moussonstr. 18                  E-mail:       israel@biomed.ee.ethz.ch
8044 Zuerich                                  g.israel@ieee.org
SWITZERLAND

