29 lines
601 B
C++
29 lines
601 B
C++
#include <iostream>
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#include "mpi.h"
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int main (int argc, char **argv)
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{
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int rank,nprocs;
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MPI_Init(&argc,&argv);
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MPI_Comm_rank(MPI_COMM_WORLD,&rank);
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MPI_Comm_size(MPI_COMM_WORLD,&nprocs);
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for (int i=0; i<nprocs; i++) {
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if ( rank==i )
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printf("%i of %i: Hello world\n",rank,nprocs);
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MPI_Barrier(MPI_COMM_WORLD);
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}
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// set the error code
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// Note: the error code should be consistent across all processors
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int error = 0;
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if ( nprocs==4 )
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error = 1;
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// Finished
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MPI_Barrier(MPI_COMM_WORLD);
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MPI_Finalize();
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return error;
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}
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