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

Returns the rank of the process (or processes) that can perform I/O via the normal language facilities. If no such rank exists, the result will be null; if every process can perform I/O, this will return the value anySource.

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


public static Nullable<int> IORank { get; }
Visual Basic (Declaration)
Public Shared ReadOnly Property IORank As Nullable(Of Integer)
Visual C++
static property Nullable<int> IORank {
	Nullable<int> get ();

See Also