NAME
          pnet_exchg - Exchange input and output data

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

          void pnet_exchg(Pnet *pnet);

     DESCRIPTION
          Function call collective communication function
          MPI_AlltoAllv in order to exchange the data from the output
          to the input buffer. Is implemented as a macro. Must be
          called after pnet_setup.  The argument of pnet_setup is:

          pnet Pointer to initialized Pnet struct

     RETURN VALUE
          None

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

     SEE ALSO
          pnet_setup(3), pnet_init(3), pnet_addconnect(3),
          pnet_free(3),  pnet_lo(3), pnet_hi(3), pnet_nodes(3)



























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