func Allreduce_float64(sendbuf, recvbuf []float64, op C.MPI_Op, comm C.MPI_Comm) {
// mpi communication call
err := C.MPI_Allreduce(
unsafe.Pointer(&sendbuf[0]), unsafe.Pointer(&recvbuf[0]),
C.int(len(sendbuf)), FLOAT64, op, comm)
if err != 0 {
log.Fatal(err)
}
}
//Allreduce
//Combines values from all processes and distributes the result back to all processes.
func Allreduce(sendBuffer interface{},
recvBuffer interface{},
count int,
dataType Datatype,
op Op,
comm Comm) int {
sendBufferVoidPointer := Get_void_ptr(sendBuffer)
recvBufferVoidPointer := Get_void_ptr(recvBuffer)
err := C.MPI_Allreduce(sendBufferVoidPointer,
recvBufferVoidPointer,
C.int(count),
C.MPI_Datatype(dataType),
C.MPI_Op(op),
C.MPI_Comm(comm))
return int(err)
}
// AllReduceInt64 : MPI_Allreduce for int64
func AllReduceInt64(comm Comm, in, out *int64, n int, op Op) {
C.MPI_Allreduce(unsafe.Pointer(in), unsafe.Pointer(out), C.int(n), MPI_i64, SUM, comm)
}
// AllReduceInt64 : MPI_Allreduce for int64
func AllReduceInt64(comm Comm, in, out *int64, n int, op Op) {
C.MPI_Allreduce(unsafe.Pointer(in), unsafe.Pointer(out), C.int(n), C.MPI_Datatype(MPI_i64), C.MPI_Op(SUM), C.MPI_Comm(comm))
}