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501 lines
14 KiB
Fortran
501 lines
14 KiB
Fortran
#if defined(SERIAL_MPI)
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! Provide a fake mpi module just to keep the compiler(s) happy.
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module mpi
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use psb_const_mod
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integer, parameter :: mpi_success=0
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integer, parameter :: mpi_request_null=0
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integer, parameter :: mpi_status_size=1
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integer, parameter :: mpi_integer = 1
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integer, parameter :: mpi_integer8 = 2
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integer, parameter :: mpi_real = 3
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integer, parameter :: mpi_double_precision = 4
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integer, parameter :: mpi_complex = 5
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integer, parameter :: mpi_double_complex = 6
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integer, parameter :: mpi_character = 7
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integer, parameter :: mpi_logical = 8
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integer, parameter :: mpi_comm_null = -1
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integer, parameter :: mpi_comm_world = 1
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real(psb_dpk_), external :: mpi_wtime
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end module mpi
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#endif
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module psi_comm_buffers_mod
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use psb_const_mod
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integer, private, parameter:: psb_int_type = 987543
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integer, private, parameter:: psb_real_type = psb_int_type + 1
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integer, private, parameter:: psb_double_type = psb_real_type + 1
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integer, private, parameter:: psb_complex_type = psb_double_type + 1
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integer, private, parameter:: psb_dcomplex_type = psb_complex_type + 1
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integer, private, parameter:: psb_logical_type = psb_dcomplex_type + 1
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integer, private, parameter:: psb_char_type = psb_logical_type + 1
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integer, private, parameter:: psb_int8_type = psb_char_type + 1
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type psb_buffer_node
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integer :: request
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integer :: icontxt
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integer :: buffer_type
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integer(psb_int_k_), allocatable :: intbuf(:)
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integer(psb_long_int_k_), allocatable :: int8buf(:)
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real(psb_spk_), allocatable :: realbuf(:)
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real(psb_dpk_), allocatable :: doublebuf(:)
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complex(psb_spk_), allocatable :: complexbuf(:)
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complex(psb_dpk_), allocatable :: dcomplbuf(:)
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logical, allocatable :: logbuf(:)
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character(len=1), allocatable :: charbuf(:)
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type(psb_buffer_node), pointer :: prev=>null(), next=>null()
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end type psb_buffer_node
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type psb_buffer_queue
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type(psb_buffer_node), pointer :: head=>null(), tail=>null()
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end type psb_buffer_queue
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interface psi_snd
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module procedure psi_isnd,&
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& psi_ssnd, psi_dsnd,&
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& psi_csnd, psi_zsnd,&
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& psi_lsnd, psi_hsnd
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end interface
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#if !defined(LONG_INTEGERS)
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interface psi_snd
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module procedure psi_i8snd
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end interface
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#endif
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contains
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subroutine psb_init_queue(mesg_queue,info)
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type(psb_buffer_queue), intent(inout) :: mesg_queue
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type(psb_buffer_node), pointer :: item
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info = 0
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if ((.not.associated(mesg_queue%head)).and.&
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& (.not.associated(mesg_queue%tail))) then
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! Nothing to do
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return
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end if
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if ((.not.associated(mesg_queue%head)).or.&
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& (.not.associated(mesg_queue%tail))) then
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! If we are here one is associated, the other is not.
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! This is impossible.
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info = -1
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write(psb_err_unit,*) 'Wrong status on init '
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return
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end if
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end subroutine psb_init_queue
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subroutine psb_wait_buffer(node, info)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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type(psb_buffer_node), intent(inout) :: node
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integer, intent(out) :: info
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integer :: status(mpi_status_size)
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call mpi_wait(node%request,status,info)
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end subroutine psb_wait_buffer
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subroutine psb_test_buffer(node, flag, info)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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type(psb_buffer_node), intent(inout) :: node
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logical, intent(out) :: flag
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integer, intent(out) :: info
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integer :: status(mpi_status_size)
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call mpi_test(node%request,flag,status,info)
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end subroutine psb_test_buffer
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subroutine psb_close_context(mesg_queue,icontxt)
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type(psb_buffer_queue), intent(inout) :: mesg_queue
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integer, intent(in) :: icontxt
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integer :: info
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type(psb_buffer_node), pointer :: node, nextnode
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node => mesg_queue%head
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do
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if (.not.associated(node)) exit
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nextnode => node%next
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if (node%icontxt == icontxt) then
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call psb_wait_buffer(node,info)
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call psb_delete_node(mesg_queue,node)
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end if
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node => nextnode
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end do
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end subroutine psb_close_context
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subroutine psb_close_all_context(mesg_queue)
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type(psb_buffer_queue), intent(inout) :: mesg_queue
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type(psb_buffer_node), pointer :: node, nextnode
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integer :: info
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node => mesg_queue%head
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do
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if (.not.associated(node)) exit
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nextnode => node%next
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call psb_wait_buffer(node,info)
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call psb_delete_node(mesg_queue,node)
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node => nextnode
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end do
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end subroutine psb_close_all_context
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subroutine psb_delete_node(mesg_queue,node)
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type(psb_buffer_queue), intent(inout) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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type(psb_buffer_node), pointer :: prevnode
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if (.not.associated(node)) then
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return
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end if
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prevnode => node%prev
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if (associated(mesg_queue%head,node)) mesg_queue%head => node%next
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if (associated(mesg_queue%tail,node)) mesg_queue%tail => prevnode
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if (associated(prevnode)) prevnode%next => node%next
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if (associated(node%next)) node%next%prev => prevnode
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deallocate(node)
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end subroutine psb_delete_node
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subroutine psb_insert_node(mesg_queue,node)
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type(psb_buffer_queue), intent(inout) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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node%next => null()
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node%prev => null()
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if ((.not.associated(mesg_queue%head)).and.&
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& (.not.associated(mesg_queue%tail))) then
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mesg_Queue%head => node
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mesg_queue%tail => node
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return
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end if
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mesg_queue%tail%next => node
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node%prev => mesg_queue%tail
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mesg_queue%tail => node
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end subroutine psb_insert_node
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subroutine psb_test_nodes(mesg_queue)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node, nextnode
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integer :: info
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logical :: flag
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node => mesg_queue%head
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do
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if (.not.associated(node)) exit
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nextnode => node%next
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call psb_test_buffer(node,flag,info)
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if (flag) then
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call psb_delete_node(mesg_queue,node)
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end if
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node => nextnode
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end do
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end subroutine psb_test_nodes
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! !!!!!!!!!!!!!!!!!
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!
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! Inner send. Basic idea:
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! the input buffer is MOVE_ALLOCed
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! to a node in the mesg queue, then it is sent.
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! Thus the calling process should guarantee that
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! the buffer is dispensable, i.e. the user data
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! has already been copied.
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!
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! !!!!!!!!!!!!!!!!!
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subroutine psi_isnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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integer(psb_int_k_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_int_type
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call move_alloc(buffer,node%intbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%intbuf,size(node%intbuf),psb_mpi_integer,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_isnd
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#if !defined(LONG_INTEGERS)
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subroutine psi_i8snd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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integer(psb_long_int_k_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_int8_type
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call move_alloc(buffer,node%int8buf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%int8buf,size(node%int8buf),mpi_integer8,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_i8snd
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#endif
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subroutine psi_ssnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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real(psb_spk_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_real_type
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call move_alloc(buffer,node%realbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%realbuf,size(node%realbuf),mpi_real,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_ssnd
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subroutine psi_dsnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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real(psb_dpk_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_double_type
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call move_alloc(buffer,node%doublebuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%doublebuf,size(node%doublebuf),mpi_double_precision,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_dsnd
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subroutine psi_csnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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complex(psb_spk_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_complex_type
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call move_alloc(buffer,node%complexbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%complexbuf,size(node%complexbuf),mpi_complex,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_csnd
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subroutine psi_zsnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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complex(psb_dpk_), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_dcomplex_type
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call move_alloc(buffer,node%dcomplbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%dcomplbuf,size(node%dcomplbuf),mpi_double_complex,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_zsnd
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subroutine psi_lsnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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logical, allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_logical_type
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call move_alloc(buffer,node%logbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%logbuf,size(node%logbuf),mpi_logical,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_lsnd
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subroutine psi_hsnd(icontxt,tag,dest,buffer,mesg_queue)
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer :: icontxt, tag, dest
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character(len=1), allocatable, intent(inout) :: buffer(:)
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type(psb_buffer_queue) :: mesg_queue
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type(psb_buffer_node), pointer :: node
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integer :: info
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allocate(node, stat=info)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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node%icontxt = icontxt
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node%buffer_type = psb_char_type
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call move_alloc(buffer,node%charbuf)
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if (info /= 0) then
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write(psb_err_unit,*) 'Fatal memory error inside communication subsystem'
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return
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end if
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call mpi_isend(node%charbuf,size(node%charbuf),mpi_character,&
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& dest,tag,icontxt,node%request,info)
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call psb_insert_node(mesg_queue,node)
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call psb_test_nodes(mesg_queue)
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end subroutine psi_hsnd
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end module psi_comm_buffers_mod
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