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Subject: Re: [OMPI users] mpirun hangs when launching job on remote node
From: Raymond Wan (rwan_at_[hidden])
Date: 2009-03-18 02:06:54

Hi Ron,

Ron Babich wrote:
> Thanks for your response. I had noticed your thread, which is why I'm
> embarrassed (but happy) to say that it looks like my problem was the
> same as yours. I mentioned in my original email that there was no
> firewall running, which it turns out was a lie. I think that when I
> checked before, I must have forgotten "sudo." Instead of "permission
> denied" or the like, I got this misleading response:

Opps! My turn to apologize -- I have to admit that I read through your post very quickly and skipped the sentence about the lack of a firewall. However, everything else sounded exactly like what I was getting.

Actually, it would be good to find out what the problem with the firewall is and to not simply turn it off. As I'm not the sysadmin, I can't really play with the settings to find out.

In your message (which I will now read more carefully :-) ), it says that you are using CentOS, which is based on RH. Our systems are using Fedora. Perhaps it has something to do with RH's defaults for the firewall settings? Another system that worked "immediately" was a Debian system. Anyway, if you find out a solution that doesn't require the firewall to be turned off, please let me know -- I think our sysadmin would be interested, too.