From: salo@cray.com (Eric Salo)
Newsgroups: comp.parallel.mpi
Subject: Re: MPI as root on SGI PowerChallenge
Date: 21 Aug 1998 08:06:19 GMT
Organization: Silicon Graphics, Inc.
Message-Id: <6rj9pr$njk$1@walter-fddi.cray.com>
References: <35DCE5F6.B563DD17@esv1.auckland.ac.nz>


The problem here is basically that in order to run MPI jobs
as root, you would need to be able to login to your machine
as root without entering a password. This is not generally
viewed as a good property for a machine to have.

It *may* be that all you need to do is add an entry to either
/etc/hosts.equiv or /.rhosts to get things to work. On the
other hand, I would not be at all surprised if there were
safeguards in either IRIX or arrayd (read: outside of MPI)
to prevent this kind of dangerous access to the machine.

--
Eric Salo      Silicon Graphics      salo@sgi.com