Yep -- it's normal. Those IP addresses are used for bootstrapping/startup, not for MPI traffic. In particular, that "HNP URI" stuff is used by Open MPI's underlying run-time environment. It's not used by the MPI layer at all.
On Feb 5, 2010, at 2:32 PM, Mike Hanby wrote: > Howdy, > > When running a Gromacs job using OpenMPI 1.4.1 on Infiniband enabled nodes, > I'm seeing the following process listing: > > \_ -bash /opt/gridengine/default/spool/compute-0-3/job_scripts/97037 > \_ mpirun -np 4 mdrun_mpi -v -np 4 -s production-Npt-323K_4CPU -o > production-Npt-323K_4CPU -c production-Npt-323K_4CPU -x > production-Npt-323K_4CPU -g production-Npt-323K_4CPU.log > \_ /opt/gridengine/bin/lx26-amd64/qrsh -inherit -nostdin -V > compute-0-4.local orted -mca ess env -mca orte_ess_jobid 945881088 > -mca orte_ess_vpid 1 -mca orte_ess_num_procs 4 --hnp-uri > "945881088.0;tcp://192.168.20.252:39440;tcp://192.168.21.252:39440" > \_ /opt/gridengine/bin/lx26-amd64/qrsh -inherit -nostdin -V > compute-0-2.local orted -mca ess env -mca orte_ess_jobid 945881088 > -mca orte_ess_vpid 2 -mca orte_ess_num_procs 4 --hnp-uri > "945881088.0;tcp://192.168.20.252:39440;tcp://192.168.21.252:39440" > \_ /opt/gridengine/bin/lx26-amd64/qrsh -inherit -nostdin -V > compute-0-1.local orted -mca ess env -mca orte_ess_jobid 945881088 > -mca orte_ess_vpid 3 -mca orte_ess_num_procs 4 --hnp-uri > "945881088.0;tcp://192.168.20.252:39440;tcp://192.168.21.252:39440" > \_ mdrun_mpi -v -np 4 -s production-Npt-323K_4CPU -o > production-Npt-323K_4CPU -c production-Npt-323K_4CPU > -x production-Npt-323K_4CPU -g production-Npt-323K_4CPU.log > > Is it normal for these tcp addresses to be listed if the job is using > Infiniband? > > The 192.168.20.x subnet is the eth0 GigE network > And the 192.168.21.x subnet is the ib0 IPoverIB network > > Or is this job actually using TCPIP over Infiniband / GigE? > > I'm running mpirun without any special fabric includes / excludes. > > ompi_info lists openib as a valid fabric: > $ ompi_info |grep openib > MCA btl: openib (MCA v2.0, API v2.0, Component v1.4.1) > > Thanks for any insight, > > Mike > ================================= > Mike Hanby > mha...@uab.edu > Information Systems Specialist II > IT HPCS / Research Computing > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
