NAME
          pnet_init - Initialize Pnet datatype

     SYNOPSIS
          #include <mpi.h>
          #include "pnet.h"

          Pnet *pnet_init(MPI_Comm comm, MPI_Datatype datatype, int nodes);

     DESCRIPTION
          The Pnet library is used for MPI parallelization of
          networks. The function has to be called after the
          initialization of MPI. The arguments of pnet_init are:

          comm MPI communicator

          datatype
               MPI datatype network for data transfer

          nodes
               Number of nodes in the network.

     RETURN VALUE
          Upon successful completion of pnet_init a pointer to
          allocated Pnet struct is returned and NULL in case of
          failure.

     AUTHOR
          Werner von Bloh (bloh@pik-potsdam.de)

     SEE ALSO
          pnet_free(3), pnet_setup(3), pnet_nodes(3)





















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