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POOpenMPI gets waiting for ever
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19932496
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2013-11-12T14:58:40.390
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2013-11-12T16:21:13.567
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when i execute this code i have no response, it gets waiting for ever, process 1 is sending data to the root process but the root process doesn't receive it (or almost that is what i think). <pre><code>#include <stdio.h> #include <stdlib.h> #include "mpi.h" void my_parallel_function(int v[], int size, int rank) { MPI_Status status; int i; if(rank==0) { MPI_Send(&v[0], 10, MPI_INT, 1, 1, MPI_COMM_WORLD); } else { MPI_Recv(&v[0], 10, MPI_INT, MPI_ANY_SOURCE, 1, MPI_COMM_WORLD,&status); for(i=0;i<10;i++) { //change the value v[i] = i; //printf("hola soy nodo: %d\n", i); } MPI_Send(&v[0], 10, MPI_INT, 0, 2, MPI_COMM_WORLD); } if(rank==0) { MPI_Recv(&v[0], 10, MPI_INT, MPI_ANY_SOURCE, 2, MPI_COMM_WORLD,&status); for(i=1;i<size;i++) { printf("\nvalue of item %d: %d\n", i, v[i]); } } } void simpleFunction() { printf("Hi i am a simple function\n"); } int main(int argc, char *argv[]) { int rank, size; MPI_Init(&argc, &argv); MPI_Comm_size(MPI_COMM_WORLD, &size); MPI_Comm_rank(MPI_COMM_WORLD, &rank); MPI_Status status; int vect[10]; int op=1; while(op != 0) { //system("clear"); printf("Welcome to example program!\n\n"); printf("\t1.- Call Parallel Function\n"); printf("\t2.- Call another Function\n"); printf("\t0.- Exit\n\t"); printf("\n\n\tEnter option:"); scanf("%d", &op); switch(op) { case 1: my_parallel_function(vect, size, rank); printf("Parallel function called successfully\n\n"); break; case 2: simpleFunction(); printf("Function called successfully\n\n"); break; } } MPI_Finalize(); return 0; } </code></pre> I am executing with -np 2 I think this is not woking as it should: <code>MPI_Recv(&v[0], 10, MPI_INT, MPI_ANY_SOURCE, 2, MPI_COMM_WORLD,&status);</code> Any idea? thank you very much. EDITED: But when i remove the if(rank==0) i get all the i/o of the slave processes, that means tons of times menu printing. I am novice in OpenMPI, how can solve this problem?. Thank you very much!.
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<c><openmpi>
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OpenMPI gets waiting for ever
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1. PO
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1. This table or related slice is empty.
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1. PTQuestion
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1. USJohn Smith
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1. USJohn Smith
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1. PO
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2. PO
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