Newsgroups: comp.parallel.mpi
From: Luc.Vereecken@chem.kuleuven.ac.be (Vereecken Luc)
Subject: Re: MPI On Linux (Single Processor)
Organization: KULeuvenNet
Date: Tue, 09 Dec 1997 23:08:18 GMT
Message-ID: <881704040.730447@marvin.kulnet.kuleuven.ac.be>

"Ahmed Abukmail" <ahmed@magicnet.net> wrote:

>	Hi Guys, I just recently acquired RedHat Linux 4.2, and I was told that I
>can install mpich on it. So I went to the argonne page and downloaded and
>installed it. I compiled files and they worked fine. However after I
>compiled and tried to run with multiple processors (mpirun -np 4 a.out), it
>said permission denied. 

'Permission denied' is usually the result of a missing or incomplete
rhosts file. Make in your home directory a file '.rhosts' with your
machine name in it to allow a rsh. See the man pages for details and
security aspects of .rhosts.