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
----------------------------------------------------------------------
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: jxc...@pitt.edu
Web:   <http://www.pitt.edu/~jxc100/> (under construction)
----------------------------------------------------------------------



Reply via email to