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HP-MPI User's Guide > Chapter 3 Understanding HP-MPI

MPI-2 name publishing support

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HP-MPI supports the MPI-2 dynamic process functionality MPI_Publish_name, MPI_Unpublish_name, MPI_Lookup_name, with the restriction that a separate nameserver must be started up on a server.

The service can be started as:

% $MPI_ROOT/bin/nameserver

and it will print out an IP and port. Then when running mpirun, the extra option -nameserver with an IP address and port must be provided:

% $MPI_ROOT/bin/mpirun -spawn -nameserver <IP:port> ...

The scope over which names are published and retrieved consists of all mpiruns which are started using the same IP:port for the nameserver.

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