Golang Barrier Examples

Example #1

File: hello.go Project: adk9/go-mpi

func main() {
	mpi.Init()
	defer mpi.Finalize()

	rank := mpi.Comm_rank(mpi.COMM_WORLD)
	size := mpi.Comm_size(mpi.COMM_WORLD)
	fmt.Printf("Hello, world, I am %d of %d\n", rank, size)
	mpi.Barrier(mpi.COMM_WORLD)
}

Example #2

File: point.go Project: adk9/go-mpi

func main() {

	mpi.Init()
	defer mpi.Finalize()

	rank := mpi.Comm_rank(mpi.COMM_WORLD)
	size := mpi.Comm_size(mpi.COMM_WORLD)

	var message int
	if rank == 0 {
		message = 60
		for i := 1; i < size; i++ {
			fmt.Printf("root sending message to %d\n", i)
			mpi.Send(&message, 1, mpi.INT, i, 10, mpi.COMM_WORLD)
		}
	} else {
		mpi.Recv(&message, 1, mpi.INT, 0, 10, mpi.COMM_WORLD, mpi.STATUS_IGNORE)
	}
	mpi.Barrier(mpi.COMM_WORLD)
}