gs_mpi Module Reference

Defines MPI gather-scatter communication.

Data Types
type	gs_mpi_t
	Gather-scatter communication using MPI. More...

Functions/Subroutines
subroutine	gs_mpi_init (this, send_pe, recv_pe)
	Initialise MPI based communication method See gs_comm.f90 for details.
subroutine	gs_mpi_init_vec (this)
	Allocate the fused vector exchange buffers, sized for GS_VEC_NC components. Deferred to the first fused exchange, see gs_comm_t.
subroutine	gs_mpi_free (this)
	Deallocate MPI based communication method.
subroutine	gs_nbsend_mpi (this, u, n, tag, deps, strm)
	Post non-blocking send operations.
subroutine	gs_nbrecv_mpi (this, tag)
	Post non-blocking receive operations.
subroutine	gs_nbwait_mpi (this, u, n, op, strm)
	Wait for non-blocking operations.
subroutine	gs_nbsend_vec_mpi (this, u, n, nc, tag, deps, strm)
	Post non-blocking sends for a fused nc-component exchange.
subroutine	gs_nbrecv_vec_mpi (this, tag, nc)
	Post non-blocking receives for a fused nc-component exchange.
subroutine	gs_nbwait_vec_mpi (this, u, n, nc, op, strm)
	Wait for a fused nc-component exchange and reduce each received slab.

Function/Subroutine Documentation

gs_mpi_free()

subroutine gs_mpi::gs_mpi_free ( class(gs_mpi_t), intent(inout)  this )

private

Definition at line 141 of file gs_mpi.f90.

gs_mpi_init()

subroutine gs_mpi::gs_mpi_init	(	class(gs_mpi_t), intent(inout)	this,
		type(stack_i4_t), intent(inout)	send_pe,
		type(stack_i4_t), intent(inout)	recv_pe
	)

Definition at line 87 of file gs_mpi.f90.

gs_mpi_init_vec()

subroutine gs_mpi::gs_mpi_init_vec ( class(gs_mpi_t), intent(inout)  this )

private

Definition at line 128 of file gs_mpi.f90.

gs_nbrecv_mpi()

subroutine gs_mpi::gs_nbrecv_mpi ( class(gs_mpi_t), intent(inout)  this, integer, intent(in)  tag  )

private

Definition at line 258 of file gs_mpi.f90.

gs_nbrecv_vec_mpi()

subroutine gs_mpi::gs_nbrecv_vec_mpi ( class(gs_mpi_t), intent(inout)  this, integer, intent(in)  tag, integer, intent(in)  nc  )

private

Definition at line 455 of file gs_mpi.f90.

gs_nbsend_mpi()

subroutine gs_mpi::gs_nbsend_mpi ( class(gs_mpi_t), intent(inout)  this, real(kind=rp), dimension(n), intent(inout)  u, integer, intent(in)  n, integer, intent(in)  tag, type(c_ptr), intent(inout)  deps, type(c_ptr), intent(inout)  strm  )

private

Definition at line 199 of file gs_mpi.f90.

gs_nbsend_vec_mpi()

subroutine gs_mpi::gs_nbsend_vec_mpi ( class(gs_mpi_t), intent(inout)  this, real(kind=rp), dimension(nc*n), intent(inout)  u, integer, intent(in)  n, integer, intent(in)  nc, integer, intent(in)  tag, type(c_ptr), intent(inout)  deps, type(c_ptr), intent(inout)  strm  )

private

Parameters

u	compact shared buffer, component-outer: u((c-1)*n + idx). Peer i's slab holds nc consecutive blocks of send_len(i) values, so the scalar offsets/lengths are reused scaled by nc.

Definition at line 397 of file gs_mpi.f90.

gs_nbwait_mpi()

subroutine gs_mpi::gs_nbwait_mpi ( class(gs_mpi_t), intent(inout)  this, real(kind=rp), dimension(n), intent(inout)  u, integer, intent(in)  n, integer  op, type(c_ptr), intent(inout)  strm  )

private

Todo:

Check size etc against status

Definition at line 295 of file gs_mpi.f90.

gs_nbwait_vec_mpi()

subroutine gs_mpi::gs_nbwait_vec_mpi ( class(gs_mpi_t), intent(inout)  this, real(kind=rp), dimension(nc*n), intent(inout)  u, integer, intent(in)  n, integer, intent(in)  nc, integer  op, type(c_ptr), intent(inout)  strm  )

private

Definition at line 485 of file gs_mpi.f90.