[mpich-discuss] MPICH error

[Wesley Bland]

We need to be able to see you entire send and receive calls, but at a first pass, it's probably that he sizes of your send and receive don't match. Send us a minimum working example (not your entire code). 

Wesley

> On Nov 29, 2013, at 1:56 AM, Soheil Hooshdaran <shooshdaran577 at gmail.com> wrote:
> 
> Hello.
> After executing MPI_Send() for the first time in the root process, my program blocks.
> 
> int the root process, I have:
> ...
> 	    while(i++<iWorldSize)
> 	    {
> 			cout << "executing send for the " << i-1 << "th time" <<  endl;
> 		   MPI_Send(&A[i-1], n*m/iWorldSize, MPI_INT, j, itag, MPI_COMM_WORLD);
> 		   cout << "executed send for the " << i << "th time" <<  endl;
> 	   }//end while
> ...
> 
> and in the slave processes I have
> 
> ...
>  MPI_Status status;   
> 	  
> 	  int *buffer = new int[m*(n/iWorldSize)];
> 			
>       cout << "\n\n\n**********Executing receive*******" << endl;
>       MPI_Recv(&buffer, m*(n/iWorld
> ...
> 
> where did I go wrong?
> 
> Thank you
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