Introduction - If you have any usage issues, please Google them yourself
MPI program design analog broadcast (MPI_Bcast) Action: Each MPI process to establish a communication node according to the node where the packet subdomain name then process each node No. 0 sub-domain communication again form a communication domain named head during broadcast , the first message in the head by a broadcast communication subdomain root process, and then again by the head of each sub-domain process in their broadcast node in the sub-region.