Using the “Distributed Array” (Darray) Datatype

int gsizes[2], distribs[2], dargs[2], psizes[2];

gsizes[0] = m; /* no. of rows in global array */

gsizes[1] = n; /* no. of columns in global array*/

distribs[0] = MPI_DISTRIBUTE_BLOCK;

distribs[1] = MPI_DISTRIBUTE_BLOCK;

dargs[0] = MPI_DISTRIBUTE_DFLT_DARG;

dargs[1] = MPI_DISTRIBUTE_DFLT_DARG;

psizes[0] = 2; /* no. of processes in vertical dimension

of process grid */

psizes[1] = 3; /* no. of processes in horizontal dimension

of process grid */

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