MPI_Put transfers data from the caller to a target window. This is analogous to an MPI_Send call. It has the same restrictions as MPI_Get.

int MPI_Put(const void *origin_addr,
			int origin_count, MPI_Datatype origin_datatype,
			int target_rank, MPI_Aint target_disp,
			int target_count, MPI_Datatype target_datatype,
			MPI_Win win)

origin_addr

address of the send buffer

origin_count

the number of entries in the origin buffer

origin_datatype

the datatype of each entry

target_rank

the rank of the target

target_disp

displacement from target window start to target buffer (target offset)

target_count

number of entries in the target buffer

target_datatype

datatype of each entry in the target buffer

win

the window object

All comments regarding MPI_Get apply to MPI_Put (and vice versa). The homogeneous environment of Stampede2's queues eases the need to worry about datatype interpretation and displacement units in these calls.