gs_device_nccl Module Reference

Defines NCCL based gather-scatter communication.

Data Types
interface	device_nccl_sendrecv
type	gs_device_nccl_buf_t
	Buffers for non-blocking communication and packing/unpacking. More...
type	gs_device_nccl_t
	Gather-scatter communication using NCCL The arrays are indexed per PE like send_pe and @ recv_pe. More...
interface	hip_gs_pack
interface	hip_gs_pack_vec
interface	hip_gs_unpack
interface	hip_gs_unpack_vec

Functions/Subroutines
subroutine	gs_device_nccl_buf_init (this, pe_order, dof_stack, mark_dupes)
subroutine	gs_device_nccl_buf_free (this)
subroutine	gs_device_nccl_init (this, send_pe, recv_pe)
	Initialise NCCL based communication method.
subroutine	gs_device_nccl_free (this)
	Deallocate MPI based communication method.
subroutine	gs_device_nccl_nbsend (this, u, n, tag, deps, strm)
	Post non-blocking send operations.
subroutine	gs_device_nccl_nbrecv (this, tag)
	Post non-blocking receive operations.
subroutine	gs_device_nccl_nbwait (this, u, n, op, strm)
	Wait for non-blocking operations.
subroutine	gs_device_nccl_nbsend_vec (this, u, n, nc, tag, deps, strm)
	Fused nc-component send. u is the compact shared device buffer (component-outer, per-component stride n = nshared). Packs each peer's nc-component slab on its own stream.
subroutine	gs_device_nccl_nbrecv_vec (this, tag, nc)
	No-op: send/recv and unpack happen in nbwait_vec.
subroutine	gs_device_nccl_nbwait_vec (this, u, n, nc, op, strm)
	Fused nc-component send/recv + unpack.

Function/Subroutine Documentation

gs_device_nccl_buf_free()

subroutine gs_device_nccl::gs_device_nccl_buf_free ( class(gs_device_nccl_buf_t), intent(inout)  this )

private

Definition at line 249 of file gs_device_nccl.F90.

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gs_device_nccl_buf_init()

subroutine gs_device_nccl::gs_device_nccl_buf_init ( class(gs_device_nccl_buf_t), intent(inout)  this, integer, dimension(:), intent(inout), allocatable  pe_order, type(stack_i4_t), dimension(:), intent(inout), allocatable  dof_stack, logical, intent(in)  mark_dupes  )

private

Definition at line 176 of file gs_device_nccl.F90.

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gs_device_nccl_free()

subroutine gs_device_nccl::gs_device_nccl_free ( class(gs_device_nccl_t), intent(inout)  this )

private

Definition at line 294 of file gs_device_nccl.F90.

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gs_device_nccl_init()

subroutine gs_device_nccl::gs_device_nccl_init ( class(gs_device_nccl_t), intent(inout)  this, type(stack_i4_t), intent(inout)  send_pe, type(stack_i4_t), intent(inout)  recv_pe  )

private

Definition at line 261 of file gs_device_nccl.F90.

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gs_device_nccl_nbrecv()

subroutine gs_device_nccl::gs_device_nccl_nbrecv ( class(gs_device_nccl_t), intent(inout)  this, integer, intent(in)  tag  )

private

Definition at line 355 of file gs_device_nccl.F90.

gs_device_nccl_nbrecv_vec()

subroutine gs_device_nccl::gs_device_nccl_nbrecv_vec ( class(gs_device_nccl_t), intent(inout)  this, integer, intent(in)  tag, integer, intent(in)  nc  )

private

Definition at line 452 of file gs_device_nccl.F90.

gs_device_nccl_nbsend()

subroutine gs_device_nccl::gs_device_nccl_nbsend ( class(gs_device_nccl_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 316 of file gs_device_nccl.F90.

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gs_device_nccl_nbsend_vec()

subroutine gs_device_nccl::gs_device_nccl_nbsend_vec ( class(gs_device_nccl_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

Definition at line 422 of file gs_device_nccl.F90.

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gs_device_nccl_nbwait()

subroutine gs_device_nccl::gs_device_nccl_nbwait ( class(gs_device_nccl_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

Definition at line 365 of file gs_device_nccl.F90.

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gs_device_nccl_nbwait_vec()

subroutine gs_device_nccl::gs_device_nccl_nbwait_vec ( class(gs_device_nccl_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 458 of file gs_device_nccl.F90.

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