main
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Last change
on this file was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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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
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Property mode
set to
100644
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File size:
635 bytes
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| 1 | /* commDupBad.c : A simple buggy example related to the MPI routine:
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| 2 | MPI_Comm_dup(MPI_Comm *).
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| 3 | */
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| 4 | #include <mpi.h>
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| 5 |
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| 6 | int main(int argc, char * argv[]) {
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| 7 | int size, rank;
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| 8 | MPI_Comm anotherComm;
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| 9 | double buf;
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| 10 |
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| 11 | MPI_Init(&argc, &argv);
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| 12 | MPI_Comm_rank(MPI_COMM_WORLD, &rank);
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| 13 | MPI_Comm_size(MPI_COMM_WORLD, &size);
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| 14 | MPI_Comm_dup(MPI_COMM_WORLD, &anotherComm);
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| 15 |
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| 16 | buf = 2.0;
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| 17 | if(rank == 0) {
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| 18 | for(int i = 1 ; i < size; i++)
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| 19 | MPI_Send(&buf, 1, MPI_DOUBLE, i, 0, MPI_COMM_WORLD);
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| 20 | }else
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| 21 | MPI_Recv(&buf, 1, MPI_DOUBLE, 0, 0, anotherComm, MPI_STATUS_IGNORE);
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| 22 | MPI_Comm_free(&anotherComm);
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| 23 | MPI_Finalize();
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| 24 | return 0;
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| 25 | }
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