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Martin Thoma 2014-04-01 14:44:24 +02:00
parent f5b2145486
commit fac84dbab3
5 changed files with 97 additions and 1 deletions
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documents/Programmierparadigmen/scripts/mpi/mpi-mybroadcast.c Normal file
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void my_bcast(void* data, int count, MPI_Datatype type,
int root, MPI_Comm comm) {
int my_rank;
MPI_Comm_rank(comm, &my_rank);
int comm_size;
MPI_Comm_size(comm, &comm_size);
if (my_rank == root) {
// If we are the root process, send our data to every one
for (int i = 0; i < comm_size; i++) {
if (i != my_rank) {
MPI_Send(data, count, type, i, 0, comm);
}
}
} else {
// If we are a receiver process, receive the data from root
MPI_Recv(data, count, type, root, 0, comm, MPI_STATUS_IGNORE);
}
}