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Subject: Re: [OMPI users] Fwd: problem for multiple clusters using mpirun
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2014-03-21 10:13:54

On Mar 21, 2014, at 10:09 AM, Hamid Saeed <e.hamidsaeed_at_[hidden]> wrote:

> > I think i have a tcp connection. As for as i know my cluster is not configured for Infiniband (IB).


> > but even for tcp connections.
> >
> > mpirun -n 2 -host master,node001 --mca btl tcp,sm,self ./helloworldmpi
> > mpirun -n 2 -host master,node001 ./helloworldmpi
> >
> > These line are not working they output
> > Error like
> > [btl_tcp_endpoint.c:655:mca_btl_tcp_endpoint_complete_connect] connect() to failed: Connection refused (111)

What are the IP addresses reported by connect()? (i.e., the address you X'ed out)

Send the output from ifconfig on each of your servers. Note that some Linux distributions do not put ifconfig in the default PATH of normal users; look for it in/sbin/ifconfig or /usr/sbin/ifconfig.

Jeff Squyres
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