mpirun -np 3 nn6

• 5 iunie 2012 17:41

   

   
  

  0

  when I am going to run the code it is showing 

  1Fatal error in MPI_Send: Invalid rank, error stack:

  MPI_Send(174): MPI_Send(buf=0x7ffff63272c0, count=12, MPI_CHAR, dest=1, tag=100, MPI_COMM_WORLD) failed

  MPI_Send(99).: Invalid rank has value 1 but must be nonnegative and less than 1

  what type of problem is it? How can I solve it. I am doing a project on it. i am egarly waiting for the reply.

  My code is:

  #include <stdio.h>

  #include "mpi.h"

  
  

  int main (int argc, char ** argv)

  {

  
  

   int my_PE_num, ntag= 100 ;

   char message[12]= "Hello, world";

  
  

  
  

  MPI_Status status;

  
  

     MPI_Init (&argc, &argv);

   MPI_Comm_rank (MPI_COMM_WORLD, &my_PE_num);

  
  

  
  

  
  

  if (my_PE_num ==0)

         MPI_Send (&message, 12, MPI_CHAR, 1, ntag, MPI_COMM_WORLD);

  
  

  printf("\n my name************\n");

  /*

  
  

  else if (my_PE_num == 1)

  
  

  MPI_Recv(&message, 12, MPI_CHAR, 0, ntag, MPI_COMM_WORLD, &status);

  
  

  
  

   printf("\n that is*************\n");

  
  

  */

  
  

  MPI_Finalize();

  
  

  
  

  return 0;

  }

  
  

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