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Fix RDMA MPI #702

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Fix RDMA MPI #702

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bfcae6a
Fix rdma-mpi
max-Hawkins Nov 6, 2024
4eccce8
Remove unneeded variables
max-Hawkins Nov 7, 2024
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12 changes: 3 additions & 9 deletions src/simulation/m_mpi_proxy.fpp
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Original file line number Diff line number Diff line change
Expand Up @@ -872,8 +872,6 @@ contains

integer :: pack_offsets(1:3), unpack_offsets(1:3)
integer :: pack_offset, unpack_offset
real(kind(0d0)), pointer :: p_send, p_recv
integer, pointer, dimension(:) :: p_i_send, p_i_recv

#ifdef MFC_MPI

Expand Down Expand Up @@ -1073,23 +1071,19 @@ contains
! Send/Recv
#:for rdma_mpi in [False, True]
if (rdma_mpi .eqv. ${'.true.' if rdma_mpi else '.false.'}$) then
p_send => q_cons_buff_send(0)
p_recv => q_cons_buff_recv(0)
#:if rdma_mpi
!$acc data attach(p_send, p_recv)
!$acc host_data use_device(p_send, p_recv)
!$acc host_data use_device(q_cons_buff_send, q_cons_buff_recv)
#:else
!$acc update host(q_cons_buff_send, ib_buff_send)
#:endif

call MPI_SENDRECV( &
p_send, buffer_count, MPI_DOUBLE_PRECISION, dst_proc, send_tag, &
p_recv, buffer_count, MPI_DOUBLE_PRECISION, src_proc, recv_tag, &
q_cons_buff_send, buffer_count, MPI_DOUBLE_PRECISION, dst_proc, send_tag, &
q_cons_buff_recv, buffer_count, MPI_DOUBLE_PRECISION, src_proc, recv_tag, &
MPI_COMM_WORLD, MPI_STATUS_IGNORE, ierr)

#:if rdma_mpi
!$acc end host_data
!$acc end data
!$acc wait
#:else
!$acc update device(q_cons_buff_recv)
Expand Down
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