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June 14, 2017 22:31
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// 24. 9. 2016 (4) | |
#include <stdio.h> | |
#include <mpi.h> | |
#define W MPI_COMM_WORLD | |
int q(int i, int j, int m) { | |
return i * m + j; | |
} | |
int main(int argc, char** argv) { | |
MPI_Init(&argc, &argv); | |
int rank, size; | |
MPI_Comm_rank(W, &rank); | |
MPI_Comm_size(W, &size); | |
int n = 6, m = 6; | |
int A[n * m], C[n * m]; | |
MPI_Datatype MPI_FOO; | |
if (rank == 0) { | |
for (int i = 0; i < n; i++) { | |
for (int j = 0; j < m; j++) { | |
A[i * m + j] = i * 10 + j; | |
printf("%2d ", A[i * m + j]); | |
} | |
printf("\n"); | |
} | |
printf("\n"); | |
printf("\n"); | |
} | |
MPI_Type_vector(n * m / 2, 1, 2, MPI_INT, &MPI_FOO); | |
MPI_Type_commit(&MPI_FOO); | |
if (rank == 0) { | |
for (int r = 1; r < size; r++) { | |
MPI_Send(A, 1, MPI_FOO, r, 0, W); | |
} | |
} | |
// printf("[%d]", rank); | |
if (rank != 0) { | |
MPI_Recv(A, m * n / 2, MPI_INT, 0, 0, W, MPI_STATUS_IGNORE); | |
} | |
if (rank != 0) { | |
for (int i = 0; i < n; i++) { | |
for (int j = 0; j < m; j++) { | |
C[i * m + j] = 0; | |
} | |
} | |
int i = 0, j = m - 1, z = 0; | |
for (int k = 0; k < n * m / 2; k++) { | |
C[i * m + j] = A[k]; | |
i++; | |
if (i > n - 1 - z) { | |
i = 0; | |
j--; | |
z++; | |
} | |
} | |
} | |
if (rank != 0) { | |
for (int i = 0; i < n; i++) { | |
for (int j = 0; j < m; j++) { | |
printf("%4d", C[i * m + j]); | |
} | |
printf("\n"); | |
} | |
} | |
MPI_Finalize(); | |
return 0; | |
} |
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