[mpich-discuss] help me rectify this mpi error please
Mohammad Zulqurnain
prodigiousguy at hotmail.com
Sun Oct 30 03:22:13 CDT 2011
i am unable to detect an error in this code can someone please help me with this:Following error is encountered when i execute this code:====================================================================================== BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES= EXIT CODE: 11= CLEANING UP REMAINING PROCESSES= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES=====================================================================================APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)
code:long fitness( /* The chromosome to be judged */ chromosome_t* c, /* Historic prices */ unsigned int* h ){ int rank = MPI::COMM_WORLD.Get_rank(); int size = MPI::COMM_WORLD.Get_size(); long total_price = 0; long avg_price; long price; long shares = 0; long cash = 0; unsigned int t; MPI_Status status; /*we apply parallelism here*/if(rank!=0){ for(int t=((rank-1)*(HISTORY_LENGTH/size)); t<((rank)*( HISTORY_LENGTH/size)); t++) { price = h[t]; total_price += price; avg_price = total_price / (t + 1);
/* Make price relative to average */ price -= avg_price;
/* Convert price to percentage value */ price = price * 100 / avg_price;
if(-price >= (long)Gray_to_bin(c->buy_price)) { /* Buy another share */ ++shares; cash -= (long)h[t]; } else if(price >= (long)Gray_to_bin(c->sell_price)) { /* Sell another share */ --shares; cash += (long)h[t]; } } /* Cash out of holdings at the end for comparisons */ cash += shares * (long)h[t-1];printf("processor %d gave cash= %d .\n",rank,cash);//sendCash(0, 0,0,cash); MPI_Send(&cash,1,MPI_LONG,0,0, MPI_COMM_WORLD);
}//MPI_Barrier(MPI_COMM_WORLD);if(rank==0){
long recieved_cash;for(int i=1; i<size; i++) {
long cash_recieved; // cash+=recieveCash(i, 0,0,recieved_cash); MPI_Recv(&cash_recieved,1, MPI_LONG,i, 0, MPI_COMM_WORLD, &status); cash+=cash_recieved; printf("master processor is taking cash from the slave processor %d ",i);
} MPI_Barrier(MPI_COMM_WORLD);}
// MPI_Barrier(MPI_COMM_WORLD); return cash;}
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