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m_libpaw_mpi.F90
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m_libpaw_mpi.F90
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!!****m* ABINIT/m_libpaw_mpi
!! NAME
!! m_libpaw_mpi
!!
!! FUNCTION
!! libPAW wrappers for MPI library.
!! Provides MPI named constants or tools as well as
!! a set of generic interfaces wrapping MPI primitives.
!!
!! COPYRIGHT
!! Copyright (C) 2014-2022 ABINIT group (MT, MG, ...)
!! This file is distributed under the terms of the
!! GNU General Public License, see ~abinit/COPYING
!! or http://www.gnu.org/copyleft/gpl.txt .
!!
!! NOTES
!! This file comes directly from m_xmpi.F90 module delivered with ABINIT.
!!
!! FOR DEVELOPPERS: in order to preserve the portability of libPAW library,
!! please consult ~abinit/src/??_libpaw/libpaw-coding-rules.txt
!!
!! SOURCE
#include "libpaw.h"
module m_libpaw_mpi
USE_DEFS
#ifdef HAVE_MPI2
use mpi
#endif
implicit none
private
!!***
#ifdef HAVE_MPI1
include 'mpif.h'
#endif
!----------------------------------------------------------------------
!Some MPI constants
#ifdef HAVE_MPI
integer,public,parameter :: xpaw_mpi_world = MPI_COMM_WORLD
integer,public,parameter :: xpaw_mpi_comm_self = MPI_COMM_SELF
integer,public,parameter :: xpaw_mpi_comm_null = MPI_COMM_NULL
#else
integer,public,parameter :: xpaw_mpi_world = 0
integer,public,parameter :: xpaw_mpi_comm_self = 0
integer,public,parameter :: xpaw_mpi_comm_null = 0
#endif
!----------------------------------------------------------------------
!MPI public procedures
public :: xpaw_mpi_abort ! Wrapper for MPI_ABORT
public :: xpaw_mpi_comm_rank ! Wrapper for MPI_COMM_RANK
public :: xpaw_mpi_comm_size ! Wrapper for MPI_COMM_SIZE
public :: xpaw_mpi_barrier ! Wrapper for MPI_BARRIER
public :: xpaw_mpi_wait ! Wrapper for MPI_WAIT
public :: xpaw_mpi_waitall ! Wrapper for MPI_WAITALL
public :: xpaw_mpi_iprobe ! Wrapper for MPI_IPROBE
!----------------------------------------------------------------------
!MPI private procedures
private :: xpaw_mpi_get_tag_ub ! Get MPI_TAG_UB attribute
!----------------------------------------------------------------------
!MPI generic interfaces
public :: xpaw_mpi_allgather ! Wrapper for MPI_ALLGATHER
interface xpaw_mpi_allgather
module procedure xpaw_mpi_allgather_int1d
module procedure xpaw_mpi_allgather_dp1d
module procedure xpaw_mpi_allgather_dp2d
module procedure xpaw_mpi_allgather_dp3d
end interface xpaw_mpi_allgather
public :: xpaw_mpi_allgatherv ! Wrapper for MPI_ALLGATHERV
interface xpaw_mpi_allgatherv
module procedure xpaw_mpi_allgatherv_int1d
module procedure xpaw_mpi_allgatherv_dp1d
module procedure xpaw_mpi_allgatherv_dp2d
end interface xpaw_mpi_allgatherv
public :: xpaw_mpi_scatterv ! Wrapper for MPI_SCATTERV
interface xpaw_mpi_scatterv
module procedure xpaw_mpi_scatterv_int1d
module procedure xpaw_mpi_scatterv_dp1d
module procedure xpaw_mpi_scatterv_dp2d
end interface xpaw_mpi_scatterv
public :: xpaw_mpi_alltoall ! Wrapper for MPI_ALLTOALL
interface xpaw_mpi_alltoall
module procedure xpaw_mpi_alltoall_int1d
module procedure xpaw_mpi_alltoall_dp1d
module procedure xpaw_mpi_alltoall_dp2d
module procedure xpaw_mpi_alltoall_dp4d
end interface xpaw_mpi_alltoall
public :: xpaw_mpi_alltoallv ! Wrapper for MPI_ALLTOALLV
interface xpaw_mpi_alltoallv
module procedure xpaw_mpi_alltoallv_int1d
module procedure xpaw_mpi_alltoallv_dp1d
module procedure xpaw_mpi_alltoallv_dp2d
end interface xpaw_mpi_alltoallv
public :: xpaw_mpi_bcast ! Wrapper for MPI_BCAST
interface xpaw_mpi_bcast
module procedure xpaw_mpi_bcast_int
module procedure xpaw_mpi_bcast_int1d
module procedure xpaw_mpi_bcast_dp1d
module procedure xpaw_mpi_bcast_dp2d
module procedure xpaw_mpi_bcast_dp3d
end interface xpaw_mpi_bcast
public :: xpaw_mpi_gather ! Wrapper for MPI_GATHER
interface xpaw_mpi_gather
module procedure xpaw_mpi_gather_int1d
module procedure xpaw_mpi_gather_dp1d
module procedure xpaw_mpi_gather_dp2d
end interface xpaw_mpi_gather
public :: xpaw_mpi_gatherv ! Wrapper for MPI_GATHERV
interface xpaw_mpi_gatherv
module procedure xpaw_mpi_gatherv_int1d
module procedure xpaw_mpi_gatherv_dp1d
module procedure xpaw_mpi_gatherv_dp2d
end interface xpaw_mpi_gatherv
public :: xpaw_mpi_recv ! Wrapper for MPI_RECV
interface xpaw_mpi_recv
module procedure xpaw_mpi_recv_int1d
module procedure xpaw_mpi_recv_dp1d
module procedure xpaw_mpi_recv_dp2d
module procedure xpaw_mpi_recv_dp3d
end interface xpaw_mpi_recv
public :: xpaw_mpi_irecv ! Wrapper for MPI_IRECV
interface xpaw_mpi_irecv
module procedure xpaw_mpi_irecv_int1d
module procedure xpaw_mpi_irecv_dp1d
module procedure xpaw_mpi_irecv_dp2d
end interface xpaw_mpi_irecv
public :: xpaw_mpi_send ! Wrapper for MPI_SEND
interface xpaw_mpi_send
module procedure xpaw_mpi_send_int1d
module procedure xpaw_mpi_send_dp1d
module procedure xpaw_mpi_send_dp2d
module procedure xpaw_mpi_send_dp3d
end interface xpaw_mpi_send
public :: xpaw_mpi_isend ! Wrapper for MPI_ISEND
interface xpaw_mpi_isend
module procedure xpaw_mpi_isend_int1d
module procedure xpaw_mpi_isend_dp1d
module procedure xpaw_mpi_isend_dp2d
end interface xpaw_mpi_isend
public :: xpaw_mpi_exch ! Wrapper for MPI_SEND/MPI_RECV
interface xpaw_mpi_exch
module procedure xpaw_mpi_exch_int1d
module procedure xpaw_mpi_exch_dp1d
module procedure xpaw_mpi_exch_dp2d
module procedure xpaw_mpi_exch_dp3d
end interface xpaw_mpi_exch
public :: xpaw_mpi_sum ! Wrapper for MPI_ALLREDUCE(SUM)
interface xpaw_mpi_sum
module procedure xpaw_mpi_sum_int
module procedure xpaw_mpi_sum_int1d
module procedure xpaw_mpi_sum_dp1d
module procedure xpaw_mpi_sum_dp2d
module procedure xpaw_mpi_sum_dp3d
end interface xpaw_mpi_sum
!!***
!----------------------------------------------------------------------
CONTAINS !===========================================================
!!***
!!****f* m_libpaw_mpi/xpaw_mpi_abort
!! NAME
!! xpaw_mpi_abort
!!
!! FUNCTION
!! Wrapper for MPI_ABORT
!!
!! INPUTS
!! [comm]=communicator of tasks to abort.
!! [mpierr]=Error code to return to invoking environment.
!! [msg]=User message
!! [exit_status]=optional, shell return code, default 1
!!
!! SOURCE
subroutine xpaw_mpi_abort(comm,mpierr,msg,exit_status)
!Arguments-------------------------
integer,optional,intent(in) :: comm,mpierr,exit_status
character(len=*),optional,intent(in) :: msg
!Local variables-------------------
integer :: ilen,ierr,ierr2,my_comm,my_errorcode,my_exit_status
logical :: testopen
#ifdef HAVE_MPI
character(len=MPI_MAX_ERROR_STRING) :: mpi_msg_error
#endif
! *************************************************************************
ierr=0
my_comm = xpaw_mpi_world; if (PRESENT(comm)) my_comm = comm
my_exit_status = 1; if (PRESENT(exit_status)) my_exit_status=exit_status
if (PRESENT(msg)) then
write(std_out,'(2a)')"User message: ",TRIM(msg)
end if
! Close std_out and ab_out
inquire(std_out,opened=testopen)
if (testopen) close(std_out)
inquire(ab_out,opened=testopen)
if (testopen) close(ab_out)
#ifdef HAVE_MPI
my_errorcode=MPI_ERR_UNKNOWN; if (PRESENT(mpierr)) my_errorcode=mpierr
call MPI_ERROR_STRING(my_errorcode, mpi_msg_error, ilen, ierr2)
call MPI_ABORT(my_comm,my_errorcode,ierr)
#endif
#if defined FC_NAG
call exit(exit_status)
#elif defined HAVE_FC_EXIT
call exit(exit_status)
#else
if (exit_status== 0) stop "0"
if (exit_status== 1) stop "1"
if (exit_status==-1) stop "-1"
#endif
stop "1"
end subroutine xpaw_mpi_abort
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_comm_rank
!! NAME
!! xpaw_mpi_comm_rank
!!
!! FUNCTION
!! Wrapper for MPI_COMM_RANK
!!
!! INPUTS
!! comm=MPI communicator.
!!
!! OUTPUT
!! xpaw_mpi_comm_rank=The rank of the node inside comm
!!
!! SOURCE
function xpaw_mpi_comm_rank(comm)
!Arguments-------------------------
integer,intent(in) :: comm
integer :: xpaw_mpi_comm_rank
!Local variables-------------------
integer :: mpierr
! *************************************************************************
mpierr=0
#ifdef HAVE_MPI
xpaw_mpi_comm_rank=-1 ! Return non-sense value if the proc does not belong to the comm
if (comm/=xpaw_mpi_comm_null) then
call MPI_COMM_RANK(comm,xpaw_mpi_comm_rank,mpierr)
end if
#else
xpaw_mpi_comm_rank=0
#endif
end function xpaw_mpi_comm_rank
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_comm_size
!! NAME
!! xpaw_mpi_comm_size
!!
!! FUNCTION
!! Wrapper for MPI_COMM_SIZE
!!
!! INPUTS
!! comm=MPI communicator.
!!
!! OUTPUT
!! xpaw_mpi_comm_size=The number of processors inside comm.
!!
!! SOURCE
function xpaw_mpi_comm_size(comm)
!Arguments-------------------------
integer,intent(in) :: comm
integer :: xpaw_mpi_comm_size
!Local variables-------------------------------
!scalars
integer :: mpierr
! *************************************************************************
mpierr=0; xpaw_mpi_comm_size=1
#ifdef HAVE_MPI
if (comm/=xpaw_mpi_comm_null) then
call MPI_COMM_SIZE(comm,xpaw_mpi_comm_size,mpierr)
end if
#endif
end function xpaw_mpi_comm_size
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_barrier
!! NAME
!! xpaw_mpi_barrier
!!
!! FUNCTION
!! Wrapper for MPI_BARRIER
!!
!! INPUTS
!! comm=MPI communicator
!!
!! SOURCE
subroutine xpaw_mpi_barrier(comm)
!Arguments-------------------------
integer,intent(in) :: comm
!Local variables-------------------
integer :: ier
#ifdef HAVE_MPI
integer :: nprocs
#endif
! *************************************************************************
ier = 0
#ifdef HAVE_MPI
if (comm/=xpaw_mpi_comm_null) then
call MPI_COMM_SIZE(comm,nprocs,ier)
if(nprocs>1)then
call MPI_BARRIER(comm,ier)
end if
end if
#endif
end subroutine xpaw_mpi_barrier
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_wait
!! NAME
!! xpaw_mpi_wait
!!
!! FUNCTION
!! Wrapper for MPI_WAIT
!!
!! INPUTS
!! request= MPI request handle to wait for
!!
!! OUTPUT
!! mpierr= status error
!!
!! SOURCE
subroutine xpaw_mpi_wait(request,mpierr)
!Arguments-------------------------
integer,intent(out) :: mpierr
integer,intent(inout) :: request
!Local variables-------------------
#ifdef HAVE_MPI
integer :: ier,status(MPI_STATUS_SIZE)
#endif
! *************************************************************************
mpierr = 0
#ifdef HAVE_MPI
call MPI_WAIT(request,status,ier)
mpierr=ier
#endif
end subroutine xpaw_mpi_wait
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_waitall
!! NAME
!! xpaw_mpi_waitall
!!
!! FUNCTION
!! Wrapper for MPI_WAITALL
!!
!! INPUTS
!! array_of_requests= array of request handles
!!
!! OUTPUT
!! mpierr= status error
!!
!! SOURCE
subroutine xpaw_mpi_waitall(array_of_requests,mpierr)
!Arguments-------------------------
integer,intent(inout) :: array_of_requests(:)
integer,intent(out) :: mpierr
!Local variables-------------------
#ifdef HAVE_MPI
integer :: ier,status(MPI_STATUS_SIZE,size(array_of_requests))
#endif
! *************************************************************************
mpierr = 0
#ifdef HAVE_MPI
call MPI_WAITALL(size(array_of_requests),array_of_requests,status,ier)
mpierr=ier
#endif
end subroutine xpaw_mpi_waitall
!!***
!----------------------------------------------------------------------
!!****f* m_libpaw_mpi/xpaw_mpi_iprobe
!! NAME
!! xpaw_mpi_iprobe
!!
!! FUNCTION
!! Wrapper for MPI_IPROBE
!!
!! INPUTS
!! source= source processes
!! tag= tag value
!! mpicomm= communicator
!!
!! OUTPUT
!! flag= True if a message with the specified source, tag, and communicator is available
!! mpierr= status error
!!
!! SOURCE
subroutine xpaw_mpi_iprobe(source,tag,mpicomm,flag,mpierr)
!Arguments-------------------------
integer,intent(in) :: mpicomm,source,tag
integer,intent(out) :: mpierr
logical,intent(out) :: flag
!Local variables-------------------
#ifdef HAVE_MPI
integer :: ier,status(MPI_STATUS_SIZE)
#endif
! *************************************************************************
mpierr = 0
#ifdef HAVE_MPI
call MPI_IPROBE(source,tag,mpicomm,flag,status,ier)
mpierr=ier
#endif
end subroutine xpaw_mpi_iprobe
!!***
!----------------------------------------------------------------------
!!****f* ABINIT/xpaw_mpi_allgather_int1d
!! NAME
!! xpaw_mpi_allgather_int1d
!!
!! FUNCTION
!! MPI_ALLGATHER for 1D integer arrays
!!
!! INPUTS
!! xval= buffer array
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received elements
!!
!! SOURCE
subroutine xpaw_mpi_allgather_int1d(xval,nelem,recvbuf,spaceComm,ier)
!Arguments-------------------------
integer, intent(in) :: xval(:)
integer, intent(inout) :: recvbuf(:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHER(xval,nelem,MPI_INTEGER,recvbuf,nelem,MPI_INTEGER,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
recvbuf(1:nelem)=xval(1:nelem)
end if
#else
recvbuf(1:nelem)=xval(1:nelem)
#endif
end subroutine xpaw_mpi_allgather_int1d
!!***
!!****f* ABINIT/xpaw_mpi_allgather_dp1d
!! NAME
!! xpaw_mpi_allgather_dp1d
!!
!! FUNCTION
!! MPI_ALLGATHER for 1D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received elements
!!
!! SOURCE
subroutine xpaw_mpi_allgather_dp1d(xval,nelem,recvbuf,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:)
real(dp), intent(inout) :: recvbuf(:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHER(xval,nelem,MPI_DOUBLE_PRECISION,recvbuf,nelem,MPI_DOUBLE_PRECISION,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
recvbuf(1:nelem)=xval(1:nelem)
end if
#else
recvbuf(1:nelem)=xval(1:nelem)
#endif
end subroutine xpaw_mpi_allgather_dp1d
!!***
!!****f* ABINIT/xpaw_mpi_allgather_dp2d
!! NAME
!! xpaw_mpi_allgather_dp2d
!!
!! FUNCTION
!! MPI_ALLGATHER for 2D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received elements
!!
!! SOURCE
subroutine xpaw_mpi_allgather_dp2d(xval,nelem,recvbuf,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:,:)
real(dp), intent(inout) :: recvbuf(:,:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHER(xval,nelem,MPI_DOUBLE_PRECISION,recvbuf,nelem,MPI_DOUBLE_PRECISION,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
recvbuf(:,:)=xval(:,:)
end if
#else
recvbuf(:,:)=xval(:,:)
#endif
end subroutine xpaw_mpi_allgather_dp2d
!!***
!!****f* ABINIT/xpaw_mpi_allgather_dp3d
!! NAME
!! xpaw_mpi_allgather_dp3d
!!
!! FUNCTION
!! MPI_ALLGATHER for 3D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received elements
!!
!! SOURCE
subroutine xpaw_mpi_allgather_dp3d(xval,nelem,recvbuf,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:,:,:)
real(dp), intent(inout) :: recvbuf(:,:,:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHER(xval,nelem,MPI_DOUBLE_PRECISION,recvbuf,nelem,MPI_DOUBLE_PRECISION,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
recvbuf(:,:,:)=xval(:,:,:)
end if
#else
recvbuf(:,:,:)=xval(:,:,:)
#endif
end subroutine xpaw_mpi_allgather_dp3d
!!***
!----------------------------------------------------------------------
!!****f* ABINIT/xpaw_mpi_allgatherv_int1d
!! NAME
!! xpaw_mpi_allgatherv_int1d
!!
!! FUNCTION
!! MPI_ALLGATHERV for 1D integer arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcounts= number of received elements
!! displs= relative offsets for incoming data
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_allgatherv_int1d(xval,nelem,recvbuf,recvcounts,displs,spaceComm,ier)
!Arguments-------------------------
integer, intent(in) :: xval(:)
integer, intent(inout) :: recvbuf(:)
integer, intent(in) :: recvcounts(:),displs(:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
!Local variables-------------------
integer :: cc,dd
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHERV(xval,nelem,MPI_INTEGER,recvbuf,recvcounts,displs,&
& MPI_INTEGER,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
dd=0;if (size(displs)>0) dd=displs(1)
cc=size(xval);if (size(recvcounts)>0) cc=recvcounts(1)
recvbuf(dd+1:dd+cc)=xval(1:cc)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_allgatherv_int1d
!!***
!!****f* ABINIT/xpaw_mpi_allgatherv_dp1d
!! NAME
!! xpaw_mpi_allgatherv_dp1d
!!
!! FUNCTION
!! MPI_ALLGATHERV for 1D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcounts= number of received elements
!! displs= relative offsets for incoming data
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_allgatherv_dp1d(xval,nelem,recvbuf,recvcounts,displs,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:)
real(dp), intent(inout) :: recvbuf(:)
integer, intent(in) :: recvcounts(:),displs(:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
!Local variables--------------
integer :: cc,dd
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHERV(xval,nelem,MPI_DOUBLE_PRECISION,recvbuf,recvcounts,displs,&
& MPI_DOUBLE_PRECISION,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
dd=0;if (size(displs)>0) dd=displs(1)
cc=size(xval);if (size(recvcounts)>0) cc=recvcounts(1)
recvbuf(dd+1:dd+cc)=xval(1:cc)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_allgatherv_dp1d
!!***
!!****f* ABINIT/xpaw_mpi_allgatherv_dp2d
!! NAME
!! xpaw_mpi_allgatherv_dp2d
!!
!! FUNCTION
!! MPI_ALLGATHERV for 2D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcounts= number of received elements
!! displs= relative offsets for incoming data
!! nelem= number of elements
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_allgatherv_dp2d(xval,nelem,recvbuf,recvcounts,displs,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:,:)
real(dp), intent(inout) :: recvbuf(:,:)
integer, intent(in) :: recvcounts(:),displs(:)
integer, intent(in) :: nelem,spaceComm
integer, intent(out) :: ier
!Local variables--------------
integer :: cc,dd,sz1
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_ALLGATHERV(xval,nelem,MPI_DOUBLE_PRECISION,recvbuf,recvcounts,displs,&
& MPI_DOUBLE_PRECISION,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
sz1=size(xval,1)
dd=0;if (size(displs)>0) dd=displs(1)/sz1
cc=size(xval,2);if (size(recvcounts)>0) cc=recvcounts(1)/sz1
recvbuf(:,dd+1:dd+cc)=xval(:,1:cc)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_allgatherv_dp2d
!!***
!----------------------------------------------------------------------
!!****f* ABINIT/xpaw_mpi_scatterv_int1d
!! NAME
!! xpaw_mpi_scatterv_int1d
!!
!! FUNCTION
!! MPI_SCATTERV for 1D integer arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcount= number of received elements
!! displs= relative offsets for incoming data (array)
!! sendcounts= number of sent elements (array)
!! root= rank of receiving process
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_scatterv_int1d(xval,sendcounts,displs,recvbuf,recvcount,root,spaceComm,ier)
!Arguments-------------------------
integer, intent(in) :: xval(:)
integer, intent(inout) :: recvbuf(:)
integer, intent(in) :: sendcounts(:),displs(:)
integer, intent(in) :: recvcount,root,spaceComm
integer, intent(out) :: ier
!Local variables-------------------
integer :: dd
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_SCATTERV(xval,sendcounts,displs,MPI_INTEGER,recvbuf,recvcount,&
& MPI_INTEGER,root,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
dd=0;if (size(displs)>0) dd=displs(1)
recvbuf(1:recvcount)=xval(dd+1:dd+recvcount)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_scatterv_int1d
!!***
!!****f* ABINIT/xpaw_mpi_scatterv_dp1d
!! NAME
!! xpaw_mpi_scatterv_dp1d
!!
!! FUNCTION
!! MPI_SCATTERV for 1D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcount= number of received elements
!! displs= relative offsets for incoming data (array)
!! sendcounts= number of sent elements (array)
!! root= rank of receiving process
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_scatterv_dp1d(xval,sendcounts,displs,recvbuf,recvcount,root,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:)
real(dp), intent(inout) :: recvbuf(:)
integer, intent(in) :: sendcounts(:),displs(:)
integer, intent(in) :: recvcount,root,spaceComm
integer, intent(out) :: ier
!Local variables-------------------
integer :: dd
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_SCATTERV(xval,sendcounts,displs,MPI_DOUBLE_PRECISION,recvbuf,recvcount,&
& MPI_DOUBLE_PRECISION,root,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
dd=0;if (size(displs)>0) dd=displs(1)
recvbuf(1:recvcount)=xval(dd+1:dd+recvcount)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_scatterv_dp1d
!!***
!!****f* ABINIT/xpaw_mpi_scatterv_dp2d
!! NAME
!! xpaw_mpi_scatterv_dp2d
!!
!! FUNCTION
!! MPI_SCATTERV for 2D double precision arrays
!!
!! INPUTS
!! xval= buffer array
!! recvcount= number of received elements
!! displs= relative offsets for incoming data (array)
!! sendcounts= number of sent elements (array)
!! root= rank of receiving process
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_scatterv_dp2d(xval,sendcounts,displs,recvbuf,recvcount,root,spaceComm,ier)
!Arguments-------------------------
real(dp), intent(in) :: xval(:,:)
real(dp), intent(inout) :: recvbuf(:,:)
integer, intent(in) :: sendcounts(:),displs(:)
integer, intent(in) :: recvcount,root,spaceComm
integer, intent(out) :: ier
!Local variables-------------------
integer :: cc,dd,sz1
! *************************************************************************
ier=0
#if defined HAVE_MPI
if (spaceComm /= xpaw_mpi_comm_self .and. spaceComm /= xpaw_mpi_comm_null) then
call MPI_SCATTERV(xval,sendcounts,displs,MPI_DOUBLE_PRECISION,recvbuf,recvcount,&
& MPI_DOUBLE_PRECISION,root,spaceComm,ier)
else if (spaceComm == xpaw_mpi_comm_self) then
#endif
sz1=size(recvbuf,1);cc=recvcount/sz1
dd=0;if (size(displs)>0) dd=displs(1)/sz1
recvbuf(:,1:cc)=xval(:,dd+1:dd+cc)
#if defined HAVE_MPI
end if
#endif
end subroutine xpaw_mpi_scatterv_dp2d
!!***
!----------------------------------------------------------------------
!!****f* ABINIT/xpaw_mpi_alltoall_int1d
!! NAME
!! xpaw_mpi_alltoall_int1d
!!
!! FUNCTION
!! MPI_ALLTOALL for 1D integer arrays
!!
!! INPUTS
!! xval= buffer array
!! sendsize= size of sent buffer
!! recvsize= size of received buffer
!! spaceComm= MPI communicator
!!
!! OUTPUT
!! ier= exit status, a non-zero value meaning there is an error
!!
!! SIDE EFFECTS
!! recvbuf= received buffer
!!
!! SOURCE
subroutine xpaw_mpi_alltoall_int1d(xval,sendsize,recvbuf,recvsize,spaceComm,ier)
!Arguments-------------------------