#define RELEASE_TAG 2
int main(int argc, char **argv){
-
int err, size, rank;
int recv_buff;
MPI_Status status;
int CS_used = 0;
xbt_dynar_t requests = xbt_dynar_new(sizeof(int), NULL);
-
+
/* Initialize MPI */
err = MPI_Init(&argc, &argv);
if(err != MPI_SUCCESS){
}
}else{
if(!xbt_dynar_is_empty(requests)){
- printf("CS release. Grant to queued requests (queue size: %lu)",
- xbt_dynar_length(requests));
+ printf("CS release. Grant to queued requests (queue size: %lu)", xbt_dynar_length(requests));
xbt_dynar_shift(requests, &recv_buff);
MPI_Send(&rank, 1, MPI_INT, recv_buff, GRANT_TAG, MPI_COMM_WORLD);
CS_used = 1;
while(1){
printf("%d asks the request.\n", rank);
MPI_Send(&rank, 1, MPI_INT, 0, REQUEST_TAG, MPI_COMM_WORLD);
-
+
MPI_Recv(&recv_buff, 1, MPI_INT, 0, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
-
+
printf("%d got the answer. Release it.\n", rank);
MPI_Send(&rank, 1, MPI_INT, 0, RELEASE_TAG, MPI_COMM_WORLD);
-
}
}