33 lines
786 B
C++
33 lines
786 B
C++
// MPI code in C++.
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// See [Gropp/Lusk/Skjellum, "Using MPI", p.33/41 etc.]
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// and /opt/mpich/include/mpi2c++/comm.h for details
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#include "greetings.h"
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#include <iostream> // MPI
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#include <mpi.h>
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using namespace std;
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int main(int argc, char *argv[])
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{
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MPI_Comm icomm = MPI_COMM_WORLD;
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MPI_Init(&argc, &argv);
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int myrank, numprocs;
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//numprocs = 1; // delete this line when uncommenting the next line
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MPI_Comm_rank(icomm, &myrank); // my MPI-rank
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MPI_Comm_size(icomm, &numprocs);
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if (0==myrank) {
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cout << "\n There are " << numprocs << " processes running.\n \n";
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}
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greetings(icomm);
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greetings_cpp(icomm);
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if (0==myrank) cout << endl;
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MPI_Finalize();
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return 0;
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}
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