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mpi_wrapper.F90
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mpi_wrapper.F90
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module mpi_wrapper
implicit none
private
public :: mype, npes, root, comm, is_master
public :: mpi_wrapper_initialize, mpi_wrapper_finalize
public :: mp_reduce_min, mp_reduce_max, mp_reduce_sum
public :: mp_bcst, mp_alltoall
#include "mpif.h"
integer, save :: mype = -999
integer, save :: npes = -999
integer, save :: root = -999
integer, save :: comm = -999
logical, save :: initialized = .false.
integer :: ierror
INTERFACE mp_bcst
MODULE PROCEDURE mp_bcst_i
MODULE PROCEDURE mp_bcst_r4
MODULE PROCEDURE mp_bcst_r8
MODULE PROCEDURE mp_bcst_1d_r4
MODULE PROCEDURE mp_bcst_1d_r8
MODULE PROCEDURE mp_bcst_2d_r4
MODULE PROCEDURE mp_bcst_2d_r8
MODULE PROCEDURE mp_bcst_3d_r4
MODULE PROCEDURE mp_bcst_3d_r8
MODULE PROCEDURE mp_bcst_4d_r4
MODULE PROCEDURE mp_bcst_4d_r8
MODULE PROCEDURE mp_bcst_1d_i
MODULE PROCEDURE mp_bcst_2d_i
MODULE PROCEDURE mp_bcst_3d_i
MODULE PROCEDURE mp_bcst_4d_i
END INTERFACE
INTERFACE mp_reduce_min
MODULE PROCEDURE mp_reduce_min_r4
MODULE PROCEDURE mp_reduce_min_r8
END INTERFACE
INTERFACE mp_reduce_max
MODULE PROCEDURE mp_reduce_max_r4_1d
MODULE PROCEDURE mp_reduce_max_r4
MODULE PROCEDURE mp_reduce_max_r8_1d
MODULE PROCEDURE mp_reduce_max_r8
MODULE PROCEDURE mp_reduce_max_i
END INTERFACE
INTERFACE mp_reduce_sum
MODULE PROCEDURE mp_reduce_sum_r4
MODULE PROCEDURE mp_reduce_sum_r4_1d
MODULE PROCEDURE mp_reduce_sum_r4_1darr
MODULE PROCEDURE mp_reduce_sum_r4_2darr
MODULE PROCEDURE mp_reduce_sum_r8
MODULE PROCEDURE mp_reduce_sum_r8_1d
MODULE PROCEDURE mp_reduce_sum_r8_1darr
MODULE PROCEDURE mp_reduce_sum_r8_2darr
END INTERFACE
INTERFACE mp_alltoall
MODULE PROCEDURE mp_alltoall_r4_1darr
END INTERFACE
contains
logical function is_master()
if (mype==root) then
is_master = .true.
else
is_master = .false.
end if
end function is_master
subroutine mpi_wrapper_initialize(mpiroot, mpicomm)
integer, intent(in) :: mpiroot, mpicomm
if (initialized) return
root = mpiroot
comm = mpicomm
call MPI_COMM_RANK(comm, mype, ierror)
call MPI_COMM_SIZE(comm, npes, ierror)
initialized = .true.
end subroutine mpi_wrapper_initialize
subroutine mpi_wrapper_finalize()
if (.not.initialized) return
mype = -999
npes = -999
root = -999
comm = -999
initialized = .false.
end subroutine mpi_wrapper_finalize
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_i :: Call SPMD broadcast
!
subroutine mp_bcst_i(q)
integer, intent(INOUT) :: q
call MPI_BCAST(q, 1, MPI_INTEGER, root, comm, ierror)
end subroutine mp_bcst_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_r4 :: Call SPMD broadcast
!
subroutine mp_bcst_r4(q)
real(kind=4), intent(INOUT) :: q
call MPI_BCAST(q, 1, MPI_REAL, root, comm, ierror)
end subroutine mp_bcst_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_r8 :: Call SPMD broadcast
!
subroutine mp_bcst_r8(q)
real(kind=8), intent(INOUT) :: q
call MPI_BCAST(q, 1, MPI_DOUBLE_PRECISION, root, comm, ierror)
end subroutine mp_bcst_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_1d_r4 :: Call SPMD broadcast
!
subroutine mp_bcst_1d_r4(q, idim)
integer, intent(IN) :: idim
real(kind=4), intent(INOUT) :: q(idim)
call MPI_BCAST(q, idim, MPI_REAL, root, comm, ierror)
end subroutine mp_bcst_1d_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_1d_r8 :: Call SPMD broadcast
!
subroutine mp_bcst_1d_r8(q, idim)
integer, intent(IN) :: idim
real(kind=8), intent(INOUT) :: q(idim)
call MPI_BCAST(q, idim, MPI_DOUBLE_PRECISION, root, comm, ierror)
end subroutine mp_bcst_1d_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_2d_r4 :: Call SPMD broadcast
!
subroutine mp_bcst_2d_r4(q, idim, jdim)
integer, intent(IN) :: idim, jdim
real(kind=4), intent(INOUT) :: q(idim,jdim)
call MPI_BCAST(q, idim*jdim, MPI_REAL, root, comm, ierror)
end subroutine mp_bcst_2d_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_2d_r8 :: Call SPMD broadcast
!
subroutine mp_bcst_2d_r8(q, idim, jdim)
integer, intent(IN) :: idim, jdim
real(kind=8), intent(INOUT) :: q(idim,jdim)
call MPI_BCAST(q, idim*jdim, MPI_DOUBLE_PRECISION, root, comm, ierror)
end subroutine mp_bcst_2d_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_3d_r4 :: Call SPMD broadcast
!
subroutine mp_bcst_3d_r4(q, idim, jdim, kdim)
integer, intent(IN) :: idim, jdim, kdim
real(kind=4), intent(INOUT) :: q(idim,jdim,kdim)
call MPI_BCAST(q, idim*jdim*kdim, MPI_REAL, root, comm, ierror)
end subroutine mp_bcst_3d_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_3d_r8 :: Call SPMD broadcast
!
subroutine mp_bcst_3d_r8(q, idim, jdim, kdim)
integer, intent(IN) :: idim, jdim, kdim
real(kind=8), intent(INOUT) :: q(idim,jdim,kdim)
call MPI_BCAST(q, idim*jdim*kdim, MPI_DOUBLE_PRECISION, root, comm, ierror)
end subroutine mp_bcst_3d_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_4d_r4 :: Call SPMD broadcast
!
subroutine mp_bcst_4d_r4(q, idim, jdim, kdim, ldim)
integer, intent(IN) :: idim, jdim, kdim, ldim
real(kind=4), intent(INOUT) :: q(idim,jdim,kdim,ldim)
call MPI_BCAST(q, idim*jdim*kdim*ldim, MPI_REAL, root, comm, ierror)
end subroutine mp_bcst_4d_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_4d_r8 :: Call SPMD broadcast
!
subroutine mp_bcst_4d_r8(q, idim, jdim, kdim, ldim)
integer, intent(IN) :: idim, jdim, kdim, ldim
real(kind=8), intent(INOUT) :: q(idim,jdim,kdim,ldim)
call MPI_BCAST(q, idim*jdim*kdim*ldim, MPI_DOUBLE_PRECISION, root, comm, ierror)
end subroutine mp_bcst_4d_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_3d_i :: Call SPMD broadcast
!
subroutine mp_bcst_3d_i(q, idim, jdim, kdim)
integer, intent(IN) :: idim, jdim, kdim
integer, intent(INOUT) :: q(idim,jdim,kdim)
call MPI_BCAST(q, idim*jdim*kdim, MPI_INTEGER, root, comm, ierror)
end subroutine mp_bcst_3d_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_1d_i :: Call SPMD broadcast
!
subroutine mp_bcst_1d_i(q, idim)
integer, intent(IN) :: idim
integer, intent(INOUT) :: q(idim)
call MPI_BCAST(q, idim, MPI_INTEGER, root, comm, ierror)
end subroutine mp_bcst_1d_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_2d_i :: Call SPMD broadcast
!
subroutine mp_bcst_2d_i(q, idim, jdim)
integer, intent(IN) :: idim, jdim
integer, intent(INOUT) :: q(idim,jdim)
call MPI_BCAST(q, idim*jdim, MPI_INTEGER, root, comm, ierror)
end subroutine mp_bcst_2d_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_4d_i :: Call SPMD broadcast
!
subroutine mp_bcst_4d_i(q, idim, jdim, kdim, ldim)
integer, intent(IN) :: idim, jdim, kdim, ldim
integer, intent(INOUT) :: q(idim,jdim,kdim,ldim)
call MPI_BCAST(q, idim*jdim*kdim*ldim, MPI_INTEGER, root, comm, ierror)
end subroutine mp_bcst_4d_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_max_r4_1d :: Call SPMD REDUCE_MAX
!
subroutine mp_reduce_max_r4_1d(mymax,npts)
integer, intent(IN) :: npts
real(kind=4), intent(INOUT) :: mymax(npts)
real(kind=4) :: gmax(npts)
call MPI_ALLREDUCE( mymax, gmax, npts, MPI_REAL, MPI_MAX, &
comm, ierror )
mymax = gmax
end subroutine mp_reduce_max_r4_1d
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_max_r8_1d :: Call SPMD REDUCE_MAX
!
subroutine mp_reduce_max_r8_1d(mymax,npts)
integer, intent(IN) :: npts
real(kind=8), intent(INOUT) :: mymax(npts)
real(kind=8) :: gmax(npts)
call MPI_ALLREDUCE( mymax, gmax, npts, MPI_DOUBLE_PRECISION, MPI_MAX, &
comm, ierror )
mymax = gmax
end subroutine mp_reduce_max_r8_1d
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_max_r4 :: Call SPMD REDUCE_MAX
!
subroutine mp_reduce_max_r4(mymax)
real(kind=4), intent(INOUT) :: mymax
real(kind=4) :: gmax
call MPI_ALLREDUCE( mymax, gmax, 1, MPI_REAL, MPI_MAX, &
comm, ierror )
mymax = gmax
end subroutine mp_reduce_max_r4
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_max_r8 :: Call SPMD REDUCE_MAX
!
subroutine mp_reduce_max_r8(mymax)
real(kind=8), intent(INOUT) :: mymax
real(kind=8) :: gmax
call MPI_ALLREDUCE( mymax, gmax, 1, MPI_DOUBLE_PRECISION, MPI_MAX, &
comm, ierror )
mymax = gmax
end subroutine mp_reduce_max_r8
subroutine mp_reduce_min_r4(mymin)
real(kind=4), intent(INOUT) :: mymin
real(kind=4) :: gmin
call MPI_ALLREDUCE( mymin, gmin, 1, MPI_REAL, MPI_MIN, &
comm, ierror )
mymin = gmin
end subroutine mp_reduce_min_r4
subroutine mp_reduce_min_r8(mymin)
real(kind=8), intent(INOUT) :: mymin
real(kind=8) :: gmin
call MPI_ALLREDUCE( mymin, gmin, 1, MPI_DOUBLE_PRECISION, MPI_MIN, &
comm, ierror )
mymin = gmin
end subroutine mp_reduce_min_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_bcst_4d_i :: Call SPMD REDUCE_MAX
!
subroutine mp_reduce_max_i(mymax)
integer, intent(INOUT) :: mymax
integer :: gmax
call MPI_ALLREDUCE( mymax, gmax, 1, MPI_INTEGER, MPI_MAX, &
comm, ierror )
mymax = gmax
end subroutine mp_reduce_max_i
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_sum_r4 :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r4(mysum)
real(kind=4), intent(INOUT) :: mysum
real(kind=4) :: gsum
call MPI_ALLREDUCE( mysum, gsum, 1, MPI_REAL, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r4
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_sum_r8 :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r8(mysum)
real(kind=8), intent(INOUT) :: mysum
real(kind=8) :: gsum
call MPI_ALLREDUCE( mysum, gsum, 1, MPI_DOUBLE_PRECISION, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r8
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
! !
!
! mp_reduce_sum_r4_1darr :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r4_1darr(mysum, npts)
integer, intent(in) :: npts
real(kind=4), intent(inout) :: mysum(npts)
real(kind=4) :: gsum(npts)
gsum = 0.0
call MPI_ALLREDUCE( mysum, gsum, npts, MPI_REAL, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r4_1darr
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
! !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
! !
!
! mp_reduce_sum_r4_2darr :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r4_2darr(mysum, npts1,npts2)
integer, intent(in) :: npts1,npts2
real(kind=4), intent(inout) :: mysum(npts1,npts2)
real(kind=4) :: gsum(npts1,npts2)
gsum = 0.0
call MPI_ALLREDUCE( mysum, gsum, npts1*npts2, MPI_REAL, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r4_2darr
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
! !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_sum_r4_1d :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r4_1d(mysum, sum1d, npts)
integer, intent(in) :: npts
real(kind=4), intent(in) :: sum1d(npts)
real(kind=4), intent(INOUT) :: mysum
real(kind=4) :: gsum
integer :: i
mysum = 0.0
do i=1,npts
mysum = mysum + sum1d(i)
enddo
call MPI_ALLREDUCE( mysum, gsum, 1, MPI_DOUBLE_PRECISION, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r4_1d
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv !
!
! mp_reduce_sum_r8_1d :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r8_1d(mysum, sum1d, npts)
integer, intent(in) :: npts
real(kind=8), intent(in) :: sum1d(npts)
real(kind=8), intent(INOUT) :: mysum
real(kind=8) :: gsum
integer :: i
mysum = 0.0
do i=1,npts
mysum = mysum + sum1d(i)
enddo
call MPI_ALLREDUCE( mysum, gsum, 1, MPI_DOUBLE_PRECISION, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r8_1d
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ !
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
! !
!
! mp_reduce_sum_r8_1darr :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r8_1darr(mysum, npts)
integer, intent(in) :: npts
real(kind=8), intent(inout) :: mysum(npts)
real(kind=8) :: gsum(npts)
gsum = 0.0
call MPI_ALLREDUCE( mysum, gsum, npts, MPI_DOUBLE_PRECISION, &
MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r8_1darr
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
! !
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
! !
!
! mp_reduce_sum_r8_2darr :: Call SPMD REDUCE_SUM
!
subroutine mp_reduce_sum_r8_2darr(mysum, npts1,npts2)
integer, intent(in) :: npts1,npts2
real(kind=8), intent(inout) :: mysum(npts1,npts2)
real(kind=8) :: gsum(npts1,npts2)
gsum = 0.0
call MPI_ALLREDUCE( mysum, gsum, npts1*npts2, &
MPI_DOUBLE_PRECISION, MPI_SUM, &
comm, ierror )
mysum = gsum
end subroutine mp_reduce_sum_r8_2darr
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
! !
!-------------------------------------------------------------------------------
! vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
! !
!
! mp_reduce_sum_r8_2darr :: Call SPMD REDUCE_SUM
!
subroutine mp_alltoall_r4_1darr(sbuf, ssize, sdispl, rbuf, rsize, rdispl)
real(kind=4), intent(in) :: sbuf(:)
real(kind=4), intent(inout) :: rbuf(:)
integer, intent(in) :: ssize(:), rsize(:)
integer, intent(in) :: sdispl(:), rdispl(:)
call MPI_ALLTOALLV( sbuf, ssize, sdispl, MPI_REAL, &
rbuf, rsize, rdispl, MPI_REAL, &
comm, ierror )
end subroutine mp_alltoall_r4_1darr
!
! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
! !
end module mpi_wrapper