Hi friend, i am newbie of lam-mpi. And i am codding the game of life with parallelization by using lammpi api. However i have a problem.
Each process has to run 10 iteration. And it sends top line or bottom line to upper or lower process with MPI_Send method.
The below code does not work. The performMatris function works well, there is no problem. The problem is encountered on MPI_Recv method. If i put "//" head of MPI_Recv
there would not be error. But if i run this code exactly, i will get this error:
One of the processes started by mpirun has exited with a nonzero exitcode. This typically indicates that the process finished in error.If your process did not finish in error, be sure to include a "return0" or "exit(0)" in your C code before exiting the application.PID 15952 failed on node n0 (127.0.0.1) due to signal 11.
What can i do, how can i fix it? Can you suggest anything ?thanx
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for(i=1; i<10; i++) { //MPI_Send(k,getCount(i),MPI_INT,i,tag,MPI_COMM_WORLD); //printf("> ONCE %d. proc girdi ....\n",myProcId); if ( myProcId != (size-1) ) { MPI_Send(myMatrix[iRowsOfProcess-2],iFileColNo,MPI_INT,myProcId+1,150,MPI_COMM_WORLD); } if ( myProcId != 0 ) { MPI_Send(myMatrix[1],iFileColNo,MPI_INT,myProcId-1,151,MPI_COMM_WORLD); } if ( myProcId != 0 ) { MPI_Recv(myTempArray3,iFileColNo,MPI_INT,myProcId-1,150,MPI_COMM_WORLD,&status); } if ( myProcId != (size-1) ) { MPI_Recv(myTempArray2,iFileColNo,MPI_INT,myProcId+1,151,MPI_COMM_WORLD,&status); } performMatris(myMatrix,iSatirAralik,myProcId,size,iRowsOfProcess,iFileColNo);
//printf(" I am here %d. process %d. loop\n",myProcId,i); }
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