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61 lines
1.7 KiB
61 lines
1.7 KiB
4 years ago
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#include <stdio.h>
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#include "mpi.h"
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main(int argc, char** argv)
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{
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int my_rank;
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int p,k,res,finres,num;
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int source,target;
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int tag1=50, tag2=60, tag3=70;
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int plithos;
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int data[100];
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int data_loc[100];
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MPI_Status status;
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MPI_Init(&argc, &argv);
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MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
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MPI_Comm_size(MPI_COMM_WORLD, &p);
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if (my_rank == 0) {
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printf("Dose plithos aritmon:\n");
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scanf("%d", &plithos);
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printf("Dose tous %d arithmous:\n", plithos);
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for (k=0; k<plithos; k++)
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scanf("%d", &data[k]);
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for (target = 1; target < p; target++)
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MPI_Send(&plithos, 1, MPI_INT, target, tag1, MPI_COMM_WORLD);
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num = plithos/p; k=num;
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for (target = 1; target < p; target++) {
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MPI_Send(&data[k], num, MPI_INT, target, tag2, MPI_COMM_WORLD);
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k+=num; }
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for (k=0; k<num; k++)
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data_loc[k]=data[k];
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}
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else {
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MPI_Recv(&plithos, 1, MPI_INT, 0, tag1, MPI_COMM_WORLD, &status);
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num = plithos/p;
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MPI_Recv(&data_loc[0], num, MPI_INT, 0, tag2, MPI_COMM_WORLD, &status);
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}
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res = 0;
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for (k=0; k<num; k++)
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res = res + (data_loc[k]*data_loc[k]);
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if (my_rank != 0) {
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MPI_Send(&res, 1, MPI_INT, 0, tag3, MPI_COMM_WORLD);
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}
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else {
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finres = res;
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printf("\n Apotelesma of process %d: %d\n", my_rank, res);
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for (source = 1; source < p; source++) {
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MPI_Recv(&res, 1, MPI_INT, source, tag3, MPI_COMM_WORLD, &status);
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finres = finres + res;
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printf("\n Apotelesma of process %d: %d\n", source, res);
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}
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printf("\n\n\n Teliko Apotelesma: %d\n", finres);
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}
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MPI_Finalize();
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}
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