source: CIVL/examples/mpi/mpiFeature/comm_dup_bad.c

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Last change on this file was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago

Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.

git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c

  • Property mode set to 100644
File size: 568 bytes
RevLine 
[056aaa8]1#include <mpi.h>
2#include <stdlib.h>
3
4#define comm MPI_COMM_WORLD
5
6int main(int argc, char * argv[]) {
7 int rank;
8 MPI_Comm newcomm;
9
10 MPI_Init(&argc, &argv);
11 MPI_Comm_rank(comm, &rank);
12 MPI_Comm_dup(comm, &newcomm);
13 if (rank == 0) {
14 MPI_Recv(NULL, 0, MPI_INT, 2, 0, comm, MPI_STATUS_IGNORE);
15 MPI_Recv(NULL, 0, MPI_INT, 1, 0, newcomm, MPI_STATUS_IGNORE);
16 } else if (rank == 1) {
17 MPI_Send(NULL, 0, MPI_INT, 0, 0, comm);
18 } else if (rank == 2) {
19 MPI_Send(NULL, 0, MPI_INT, 0, 0, newcomm);
20 }
21 MPI_Comm_free(&newcomm);
22 MPI_Finalize();
23}
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