MPI One-Sided Communications Functions

In this section

• MPI_Accumulate
  Accumulates data into the target process using remote memory access.

• MPI_Compare_and_swap
  Performs a remote atomic compare and swap operation.

• MPI_Fetch_and_op
  Performs atomic read-modify-write on one element of data, and returns the data element before the accumulate operation.

• MPI_Get
  Gets data from a memory window on a remote process.

• MPI_Get_accumulate
  Performs atomic read-modify-write and returns the data before the accumulate operation.

• MPI_Raccumulate
  Request-based RMA accumulate operation.

• MPI_Rget
  Request-based RMA get operation.

• MPI_Rget_accumulate
  Request-based RMA read-modify-write operation returns the data before the accumulate operation.

• MPI_Rput
  Request-based RMA put operation.

• MPI_Put
  Puts data into a memory window on a remote process.

• MPI_Win_allocate
  Creates an MPI Window object that allocates memory.

• MPI_Win_allocate_shared
  Creates an MPI Window object that allocates memory, allocated memory can be accessed from all processes in the window’s group with direct load/store instructions.

• MPI_Win_attach
  Attaches a local memory region for remote access within the given window.

• MPI_Win_complete
  Completes an RMA operations begun after an MPI_Win_start.

• MPI_Win_create
  Creates an MPI Window object for one-sided communication.

• MPI_Win_create_dynamic
  Creates a window that allows the user to dynamically control which memory is exposed by the window.

• MPI_Win_detach
  Detaches a previously attached memory region.

• MPI_Win_fence
  Performs an MPI fence synchronization on a MPI window.

• MPI_Win_flush
  Completes all outstanding RMA operations initiated by the calling process to the target rank.

• MPI_Win_flush_all
  Completes operations issued by the calling process to any target on the specified window.

• MPI_Win_flush_local
  Locally completes at the origin all outstanding RMA operations initiated by the calling process to the target process.

• MPI_Win_flush_local_all
  Locally completes at the origin all RMA operations issued by the calling process to any target.

• MPI_Win_free
  Frees an MPI RMA window object.

• MPI_Win_get_group
  Gets the MPI Group of the window object.

• MPI_Win_lock
  Begins an RMA access epoch at the target process.

• MPI_Win_lock_all
  Starts an RMA access epoch to all processes in window object.

• MPI_Win_post
  Starts an RMA exposure epoch.

• MPI_Win_shared_query
  Queries the process-local address for remote memory segments created with MPI_Win_allocate_shared.

• MPI_Win_start
  Starts an RMA access epoch.

• MPI_Win_sync
  Synchronizes the private and public window copies of win.

• MPI_Win_test
  Tests whether an RMA exposure epoch has completed.

• MPI_Win_unlock
  Completes an RMA access epoch at the target process.

• MPI_Win_unlock_all
  Completes a shared RMA access epoch started by a call to MPI_Win_lock_all on a window.

• MPI_Win_wait
  Completes an RMA exposure epoch begun with MPI_Win_post.