#define ONE_MILLION 1000000.0
#define RAND_SEED 842270
-int main(int argc, char* argv[]) {
+int main(int argc, char *argv[])
+{
int size, rank;
int N, I;
MPI_Comm_size(MPI_COMM_WORLD, &size);
if (0 == rank) {
- start_time = (struct timeval *)malloc(sizeof(struct timeval));
- stop_time = (struct timeval *)malloc(sizeof(struct timeval));
+ start_time = (struct timeval *) malloc(sizeof(struct timeval));
+ stop_time = (struct timeval *) malloc(sizeof(struct timeval));
}
- for (N = N_START ; N <= N_STOP ; N = N_NEXT) {
+ for (N = N_START; N <= N_STOP; N = N_NEXT) {
buffer = malloc(sizeof(char) * N);
if (0 == rank) {
for (j = 0; j < N; j++) {
- buffer[j] = (char)(random() % 256);
+ buffer[j] = (char) (random() % 256);
}
if (-1 == gettimeofday(start_time, NULL)) {
printf("couldn't set start_time on node 0!\n");
MPI_Bcast(buffer, N, MPI_BYTE, 0, MPI_COMM_WORLD);
if (0 == rank) {
for (j = 1; j < size; j++) {
- MPI_Recv(&check, 1, MPI_INT, MPI_ANY_SOURCE, 1, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
+ MPI_Recv(&check, 1, MPI_INT, MPI_ANY_SOURCE, 1, MPI_COMM_WORLD,
+ MPI_STATUS_IGNORE);
}
} else {
MPI_Send(&rank, 1, MPI_INT, 0, 1, MPI_COMM_WORLD);
MPI_Abort(MPI_COMM_WORLD, GETTIMEOFDAY_ERROR);
exit(EXIT_FAILURE);
}
- seconds = (double)(stop_time->tv_sec - start_time->tv_sec) + (double)(stop_time->tv_usec - start_time->tv_usec) / ONE_MILLION;
+ seconds =
+ (double) (stop_time->tv_sec - start_time->tv_sec) +
+ (double) (stop_time->tv_usec - start_time->tv_usec) / ONE_MILLION;
}
free(buffer);
if (0 == rank) {
- printf("N: %10d, iter: %d, time: %10f s, avg rate: %12f Mbps\n", N, ITER, seconds, ((double)N * ITER * 8) / (1024.0 * 1024.0 * seconds));
+ printf("N: %10d, iter: %d, time: %10f s, avg rate: %12f Mbps\n", N,
+ ITER, seconds,
+ ((double) N * ITER * 8) / (1024.0 * 1024.0 * seconds));
}
}