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From: James Conway (jxc100_at_[hidden])
Date: 2006-02-09 18:50:26


I couldn't find any information on firewall ports to open up for
using OpenMPI. I have compiled and successfully run simple commands
(eg mpirun with "uname -n") on the localhost, but including remote
hosts caused a hang. Statements in the remote .cshrc to echo would be
returned, but nothing would come back from the "uname" command - the
process hung until I control-c. I looked in the firewall log
(ipfw.log) on the remotehost but found no messages. However, the
localhost log showed that a return connection up in the 51000's was
being blocked, and when I turned off the localhost's firewall, the
mpirun command would complete correctly. (The remotehost firewall
remained on).

However, I cannot find a range of ports to open. I am not really
familiar with the ipfw syntax, and hope to rely on the very simple
interface provided by Mac OSX 10.4.4 (ie, define a range of ports,
TCP and/or UDP). Since this is clearly critical, I suspect that I
must have overlooked some information on the OpenMPI web-site - if
so, please direct me to it. If I haven't, it might be worth a word or
two in the FAQ.

Thanks for any help.

James Conway
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James Conway, PhD.,
Department of Structural Biology
University of Pittsburgh School of Medicine
Biomedical Science Tower 3, Room 2047
3501 5th Ave
Pittsburgh, PA 15260
U.S.A.
Phone: +1-412-383-9847
Fax: +1-412-648-8998
Email: jxc100_at_[hidden]
Web: <http://www.pitt.edu/~jxc100/> (under construction)
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