The MPI Win (Shared Memory) Object Type
MPI provides an MPI_Win handle. The win or window object is a chunk of memory shared by several processes. It is NOT a user-interface window.
Like the communicator, the win is a major MPI object with attributes, error handlers, and inter-process synchronization and locking.
To do
This page is far from done. Win is one of the major types provided by MPI and needs much more explanation.