#define MAX_PROCESSES 10
-int main( int argc, char **argv )
+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];
-
- MTest_Init( &argc, &argv );
- MPI_Comm_rank( MPI_COMM_WORLD, &rank );
- MPI_Comm_size( MPI_COMM_WORLD, &size );
+ 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];
+
+ MTest_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++;
- }
-
- MTest_Finalize( errors );
+ 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++;
+ }
+
+ MTest_Finalize(errors);
MPI_Finalize();
- return MTestReturnValue( errors );
+ return MTestReturnValue(errors);
}
