First, OMPI does -not- require you to use ipoib. With that command line, both procs will be running on remotehostip. I don't believe openib has a loopback interface, so you'll need the shared memory btl so procs co-located on a node can talk to each other. In other words, you need
-mca btl sm,openib,self Finally, have you checked your params? I'm unaware of any param btl_openib_if_include, though maybe I just missed it. Use ompi_info --param btl openib to see the supported values. Remember, we don't check your params for syntax errors - if it isn't recognized, we just ignore it. On Oct 13, 2011, at 7:12 PM, bhimesh akula wrote: > HI, > > We have multi node set up and they are back to back connected.we are trying > to run open MPI without using ipoib means not using normal ethernet interface > instead it has to go through our uverbs interface. > > This is the command i tried ... > "mpirun --prefix /usr/local/ -np 2 --mca btl openib,self --mca > btl_openib_cpc_include rdmacm --mca btl_openib_if_include "mthca_0:1" -H > remotehostip osu_bw . > > Here in above command i have given again IP only as no idea on what > parameters has to be given to mention remote host(like IP any other parameter > to identify remote host while running MPI without ipoib). > > And also please give me a way to run the open MPI without ipoib and using our > ibverbs interface on multi node set up.please help me on this ASAP ... > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
