main
test-branch
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Last change
on this file since bb03188 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:
744 bytes
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| 1 | #include<mpi.h>
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| 2 | //#include<stdio.h>
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| 3 | int myrank;
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| 4 | int nprocs;
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| 5 | int left;
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| 6 | int right;
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| 7 |
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| 8 | void main(int argc, char **argv) {
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| 9 | int i;
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| 10 | int data = 0;
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| 11 |
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| 12 | MPI_Init(&argc, &argv);
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| 13 | MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
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| 14 | MPI_Comm_rank(MPI_COMM_WORLD, &myrank);
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| 15 | left = (myrank+nprocs-1)%nprocs;
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| 16 | right = (myrank+nprocs+1)%nprocs;
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| 17 | i=0;
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| 18 | if (myrank%2==0) {
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| 19 | MPI_Send(&data, 0, MPI_INT, right, 0, MPI_COMM_WORLD);
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| 20 | MPI_Recv(&data, 0, MPI_INT, left, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
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| 21 | } else {
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| 22 | MPI_Recv(&data, 0, MPI_INT, left, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
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| 23 | MPI_Send(&data, 0, MPI_INT, right, 0, MPI_COMM_WORLD);
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| 24 | }
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| 25 | //printf("I'm process %d.\n", myrank);
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| 26 | MPI_Finalize();
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| 27 | }
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