[This is preliminary documentation and is subject to change.]

Predefined attribute key that can be used to determine the rank of the host process associated with MPI_COMM_WORLD. If there is no host, the result will be MPI_PROC_NULL. See HostRank.

Namespace:  MPI
Assembly:  MPI (in MPI.dll)
Version: (


public const int MPI_HOST
Visual Basic (Declaration)
Public Const MPI_HOST As Integer
Visual C++
literal int MPI_HOST

See Also