Newsgroups: comp.parallel.mpi
From: lusk@mcs.anl.gov (Rusty Lusk)
Subject: Re: Help!!When I install MPICH....
Organization: Math and Computer Science, Argonne.
Date: 15 Dec 1995 16:25:40 GMT
Message-ID: <4as7i4$h2t@milo.mcs.anl.gov>

In article <4aqtsm$e05@news.csie.nctu.edu.tw>, 812817@next01.cis.thu.edu.tw () writes:
|> 	I downloaded MPICH and its Installation Guide.
|> 	I follow those steps in Installation Guide.
|> 	Everything is good,except mpirun -np 4 cpi.
|> 	It tells me that "Permission denied",but when 
|> 	I changes "mpirun -np 1 cpi",and it works well.
|> 	Something wrong with environment?!

Any problems with the MPICH implementation of MPI are best sent to 
mpi-bugs@mcs.anl.gov. 

As described in the User's Guide, the "Permission denied" message comes
from having your network configured so that the machines do not trust
one another for remote shells.  (You will find that you can't do
"rsh sun2.cis.thu.edu.tw date".)  You can:

1. Read the Unix man pages under 'rhost' for more information.
2. Talk to to your system administrator.
3  Use an alternative startup mechanism (Read about the "secure server" in
     the User's Guide).  
4. Use the 'tstmachines' script in the bin directory to check out your
     environment before you try to run an mpi application.

Hope this helps.

Regards,
Rusty

