MPICH with RedHat 7.1

Ron Chen ron_chen_123 at yahoo.com
Sat Aug 11 15:15:49 EDT 2001


Can you rsh to all the machines (without using a
password)? Looks like the program hangs when starting
processes on certain machines.

try:

rsh <node> hostname

Can you get the output?

-Ron

--- "William R. Pearson"
<wrp at alpha0.bioch.virginia.edu> wrote:
> 
> I am having problems running the MPI version of the
> fasta program
> under RedHat 7.1 on a 12 dual processor Intel
> cluster.  The PVM
> version of the program works fine.
> 
> The program works perfectly with mpirun -np 3, which
> produces 2 worker
> nodes and a manager.  However, mpirun with -np >3
> always hangs in
> MPI_Init(), as the host machine tries to contact the
> 3rd node.  The
> program also fails if I use a -p4pg file, or
> -machinefile.
> 
> I am using the lateset MPICH 1.2.1 with all patches
> installed.  The
> problem occurs using either ssh or rsh.
> 
> This is a program that worked fine under RH6.2 MPICH
> (except we were
> broken into and decided to upgrade to RH7.1).
> 
> Any advice would be appreciated.
> 
> Bill Pearson
> 
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