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From: Lev Givon (lev_at_[hidden])
Date: 2007-08-27 17:14:29

I have OpenMPI 1.2.3 installed on an XGrid cluster and a separate Mac
client that I am using to submit jobs to the head (controller) node of
the cluster. The cluster's compute nodes are all connected to the head
node via a private network and are not running any firewalls. When I
try running jobs with mpirun directly on the cluster's head node, they
execute successfully; if I attempt to submit the jobs from the client
(which can run jobs on the cluster using the xgrid command line tool)
with mpirun, however, they appear to hang indefinitely (i.e., a job ID
is created, but the mpirun itself never returns or terminates). Is it
nececessary to configure the firewall on the submission client to
grant access to the cluster head node in order to remotely submit jobs
to the cluster's head node?