I agree that testing using mpirun directly is a good comparision. However, connection refused usually means that the login information was never found. The only way to get more information is to using something like strace (on linux) or truss on solaris and find out exactly which login/config files were opened during initialization. All login is performed in the C mpi layer though (as far as I remember).

Julian Cook

----- Original Message ----
From: Jairo Serrano <jairodsl@gmail.com>
To: pympi-users@lists.sourceforge.net
Sent: Sunday, April 8, 2007 6:23:35 PM
Subject: [Pympi-users] port 544: connection refused

Hi again !

When execute "mpirun -np 2 -machinefile machines helloworld" works fine !!! but if i try to run "mpirun -np 2 -machinefile machines pyMPI helloworld.py" then i have got the next error:

connect to address port 544: connection refused
trying krb4 rsh...
connect to address port 544: connection refused
trying normal rsh (/usr/bin/rsh)
cluster2 connection refused
p0_2640: p4_error: Child process exited while making connection to remote process on cluster2:0
p0_2640: (33.040355) net send: could not write to fd=4, errno=32

Im working on 2 virtual machines over VMware Workstation 5.5, each one with fedora 5, mpich-1.2.7p1 and pyMPI-2.4b. The ip configuration is for:

cluster1 machine:

dns primary:

cluster2 machine:

dns primary:

What could be the problem ? compatibility between mpich and pympi ?

Bucaramanga, Colombia
UIS Rugby Club (c) 2007
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