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Add plotting code

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daviddoji
2021-04-13 20:44:16 +02:00
parent 533d805d98
commit cc2614d7d2
1 changed files with 12 additions and 2 deletions
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12
Exercises/ex_1/ping_pong/ping-pong.c
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@@ -12,6 +12,14 @@ int main(int argc, char *argv[]) // ping pong
int size, rank, partner, i, count, r, repetitions; int size, rank, partner, i, count, r, repetitions;
double time, bandwidth; double time, bandwidth;
FILE *fp;
fp = fopen("data.dat", "w");
if (!fp) {
printf("file could not be opened\n");
getchar();
return -1;
}
MPI_Init(&argc, &argv); MPI_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &size); MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank); MPI_Comm_rank(MPI_COMM_WORLD, &rank);
@@ -47,8 +55,10 @@ int main(int argc, char *argv[]) // ping pong
time = 1e6 * time; // micro-seconds time = 1e6 * time; // micro-seconds
bandwidth = count * sizeof(double) / time; // MByte/s bandwidth = count * sizeof(double) / time; // MByte/s
if (rank == 0) if (rank == 0) {
fprintf(fp, "%12zd %12d %12.2f %12.2f\n", count * sizeof(double), repetitions, time, bandwidth);
printf("%12zd %12d %12.2f %12.2f\n", count * sizeof(double), repetitions, time, bandwidth); printf("%12zd %12d %12.2f %12.2f\n", count * sizeof(double), repetitions, time, bandwidth);
}
count = count * 2; count = count * 2;
repetitions = repetitions / 2; repetitions = repetitions / 2;
} }