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/* ../../../smpi_script/bin/smpirun -hostfile hostfile_send_deterministic -platform ../../platforms/cluster_backbone.xml -np 3 --cfg=smpi/send-is-detached-thresh:0 gdb\ --args\ ./send_deterministic */
/* Copyright (c) 2009-2025. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include <stdio.h>
#include <mpi.h>
int main(int argc, char **argv)
{
int recv_buff;
int size;
int rank;
MPI_Status status;
/* Initialize MPI */
int err = MPI_Init(&argc, &argv);
if (err != MPI_SUCCESS) {
printf("MPI initialization failed!\n");
exit(1);
}
MPI_Comm_size(MPI_COMM_WORLD, &size); /* Get nr of tasks */
MPI_Comm_rank(MPI_COMM_WORLD, &rank); /* Get id of this process */
if (size < 2) {
printf("run this program with at least 2 processes \n");
MPI_Finalize();
exit(0);
}
if (rank == 0) {
for (int i = 0; i < size - 1; i++) {
MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
}
}else{
MPI_Send(&rank, 1, MPI_INT, 0, 42, MPI_COMM_WORLD);
}
MPI_Finalize();
return 0;
}
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