+++ /dev/null
-#include "mpi.h"
-#include <stdio.h>
-#include "test.h"
-
-#define MAX_PROCESSES 10
-
-int main( int argc, char **argv )
-{
- int rank, size, i,j;
- int table[MAX_PROCESSES][MAX_PROCESSES];
- int row[MAX_PROCESSES];
- int errors=0;
- int participants;
- int displs[MAX_PROCESSES];
- int send_counts[MAX_PROCESSES];
-
- MPI_Init( &argc, &argv );
- MPI_Comm_rank( MPI_COMM_WORLD, &rank );
- MPI_Comm_size( MPI_COMM_WORLD, &size );
-
- /* A maximum of MAX_PROCESSES processes can participate */
- if ( size > MAX_PROCESSES ) participants = MAX_PROCESSES;
- else participants = size;
- if ( (rank < participants) ) {
- int recv_count = MAX_PROCESSES;
-
- /* If I'm the root (process 0), then fill out the big table */
- /* and setup send_counts and displs arrays */
- if (rank == 0)
- for ( i=0; i<participants; i++) {
- send_counts[i] = recv_count;
- displs[i] = i * MAX_PROCESSES;
- for ( j=0; j<MAX_PROCESSES; j++ )
- table[i][j] = i+j;
- }
-
- /* Scatter the big table to everybody's little table */
- MPI_Scatterv(&table[0][0], send_counts, displs, MPI_INT,
- &row[0] , recv_count, MPI_INT, 0, MPI_COMM_WORLD);
-
- /* Now see if our row looks right */
- for (i=0; i<MAX_PROCESSES; i++)
- if ( row[i] != i+rank ) errors++;
- }
-
- Test_Waitforall( );
- MPI_Finalize();
- if (errors)
- printf( "[%d] done with ERRORS(%d)!\n", rank, errors );
- return errors;
-}