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notifyProcesses.c
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notifyProcesses.c
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//
// Created by tomas on 18.12.11.
//
#include <mpi.h>
#include <stdlib.h>
#include <stdio.h>
int notifyProcesses() {
MPI_Init(NULL, NULL);
int size, rank;
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
srand(4);
if (rank == 0) {
int try = 0;
int random = 0;
while (random < 90) {
try++;
random = rand() % 100;
if (random > 90) {
printf("Found %d on try %d and Sending to processes\n", random, try);
for (int i = 0; i < size; ++i) {
if (i == rank) continue;
MPI_Send(&random, 1, MPI_INT, i, 0, MPI_COMM_WORLD);
}
}
}
} else {
int received = 0;
while (!received) {
int flag;
MPI_Status status;
MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &flag, &status);
if (flag) {
printf("Found message on process: %d, from %d with tag: %d\n", rank, status.MPI_SOURCE, status.MPI_TAG);
int mess;
MPI_Recv(&mess, 1, MPI_INT, status.MPI_SOURCE, status.MPI_TAG, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
printf("Message %d received on %d\n", mess, rank);
received = 1;
}
}
}
MPI_Finalize();
}