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psblas3/base/modules/penv/psi_z_collective_mod.F90

861 lines
22 KiB
Fortran

!
! Parallel Sparse BLAS version 3.5
! (C) Copyright 2006-2018
! Salvatore Filippone
! Alfredo Buttari
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
module psi_z_collective_mod
use psi_penv_mod
interface psb_sum
module procedure psb_zsums, psb_zsumv, psb_zsumm, &
& psb_zsums_ec, psb_zsumv_ec, psb_zsumm_ec
end interface
interface psb_amx
module procedure psb_zamxs, psb_zamxv, psb_zamxm, &
& psb_zamxs_ec, psb_zamxv_ec, psb_zamxm_ec
end interface
interface psb_amn
module procedure psb_zamns, psb_zamnv, psb_zamnm, &
& psb_zamns_ec, psb_zamnv_ec, psb_zamnm_ec
end interface
interface psb_bcast
module procedure psb_zbcasts, psb_zbcastv, psb_zbcastm, &
& psb_zbcasts_ec, psb_zbcastv_ec, psb_zbcastm_ec
end interface psb_bcast
interface psb_scan_sum
module procedure psb_zscan_sums, psb_zscan_sumv
end interface psb_scan_sum
interface psb_exscan_sum
module procedure psb_zexscan_sums, psb_zexscan_sumv
end interface psb_exscan_sum
contains
! !!!!!!!!!!!!!!!!!!!!!!
!
! Reduction operations
!
! !!!!!!!!!!!!!!!!!!!!!!
!
! SUM
!
subroutine psb_zsums(ictxt,dat,root)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_) :: dat_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call mpi_allreduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_sum,ictxt,info)
dat = dat_
else
call mpi_reduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_sum,root_,ictxt,info)
if (iam == root_) dat = dat_
endif
#endif
end subroutine psb_zsums
subroutine psb_zsumv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_) &
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_sum,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_sum,root_,ictxt,info)
else
call psb_realloc(1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_sum,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zsumv
subroutine psb_zsumm(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:,:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_)&
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_sum,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_sum,root_,ictxt,info)
else
call psb_realloc(1,1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_sum,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zsumm
subroutine psb_zsums_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_sum(ictxt_,dat,root_)
else
call psb_sum(ictxt_,dat)
end if
end subroutine psb_zsums_ec
subroutine psb_zsumv_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_sum(ictxt_,dat,root_)
else
call psb_sum(ictxt_,dat)
end if
end subroutine psb_zsumv_ec
subroutine psb_zsumm_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_sum(ictxt_,dat,root_)
else
call psb_sum(ictxt_,dat)
end if
end subroutine psb_zsumm_ec
!
! AMX: Maximum Absolute Value
!
subroutine psb_zamxs(ictxt,dat,root)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_) :: dat_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call mpi_allreduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_zamx_op,ictxt,info)
dat = dat_
else
call mpi_reduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_zamx_op,root_,ictxt,info)
if (iam == root_) dat = dat_
endif
#endif
end subroutine psb_zamxs
subroutine psb_zamxv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_) &
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,root_,ictxt,info)
else
call psb_realloc(1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zamxv
subroutine psb_zamxm(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:,:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_)&
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,root_,ictxt,info)
else
call psb_realloc(1,1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_zamx_op,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zamxm
subroutine psb_zamxs_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amx(ictxt_,dat,root_)
else
call psb_amx(ictxt_,dat)
end if
end subroutine psb_zamxs_ec
subroutine psb_zamxv_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amx(ictxt_,dat,root_)
else
call psb_amx(ictxt_,dat)
end if
end subroutine psb_zamxv_ec
subroutine psb_zamxm_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amx(ictxt_,dat,root_)
else
call psb_amx(ictxt_,dat)
end if
end subroutine psb_zamxm_ec
!
! AMN: Minimum Absolute Value
!
subroutine psb_zamns(ictxt,dat,root)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_) :: dat_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call mpi_allreduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_zamn_op,ictxt,info)
dat = dat_
else
call mpi_reduce(dat,dat_,1,psb_mpi_c_dpk_,mpi_zamn_op,root_,ictxt,info)
if (iam == root_) dat = dat_
endif
#endif
end subroutine psb_zamns
subroutine psb_zamnv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_) &
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,root_,ictxt,info)
else
call psb_realloc(1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zamnv
subroutine psb_zamnm(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:,:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = -1
endif
if (root_ == -1) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_)&
& call mpi_allreduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,ictxt,info)
else
if (iam == root_) then
call psb_realloc(size(dat,1),size(dat,2),dat_,iinfo)
dat_ = dat
call mpi_reduce(dat_,dat,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,root_,ictxt,info)
else
call psb_realloc(1,1,dat_,iinfo)
call mpi_reduce(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_zamn_op,root_,ictxt,info)
end if
endif
#endif
end subroutine psb_zamnm
subroutine psb_zamns_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amn(ictxt_,dat,root_)
else
call psb_amn(ictxt_,dat)
end if
end subroutine psb_zamns_ec
subroutine psb_zamnv_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amn(ictxt_,dat,root_)
else
call psb_amn(ictxt_,dat)
end if
end subroutine psb_zamnv_ec
subroutine psb_zamnm_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_amn(ictxt_,dat,root_)
else
call psb_amn(ictxt_,dat)
end if
end subroutine psb_zamnm_ec
!
! BCAST Broadcast
!
subroutine psb_zbcasts(ictxt,dat,root)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = psb_root_
endif
call mpi_bcast(dat,1,psb_mpi_c_dpk_,root_,ictxt,info)
#endif
end subroutine psb_zbcasts
subroutine psb_zbcastv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = psb_root_
endif
call mpi_bcast(dat,size(dat),psb_mpi_c_dpk_,root_,ictxt,info)
#endif
end subroutine psb_zbcastv
subroutine psb_zbcastm(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
if (present(root)) then
root_ = root
else
root_ = psb_root_
endif
call mpi_bcast(dat,size(dat),psb_mpi_c_dpk_,root_,ictxt,info)
#endif
end subroutine psb_zbcastm
subroutine psb_zbcasts_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_bcast(ictxt_,dat,root_)
else
call psb_bcast(ictxt_,dat)
end if
end subroutine psb_zbcasts_ec
subroutine psb_zbcastv_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_bcast(ictxt_,dat,root_)
else
call psb_bcast(ictxt_,dat)
end if
end subroutine psb_zbcastv_ec
subroutine psb_zbcastm_ec(ictxt,dat,root)
implicit none
integer(psb_epk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:,:)
integer(psb_epk_), intent(in), optional :: root
integer(psb_mpk_) :: ictxt_, root_
ictxt_ = ictxt
if (present(root)) then
root_ = root
call psb_bcast(ictxt_,dat,root_)
else
call psb_bcast(ictxt_,dat)
end if
end subroutine psb_zbcastm_ec
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! SCAN
!
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subroutine psb_zscan_sums(ictxt,dat)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
complex(psb_dpk_) :: dat_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
call mpi_scan(dat,dat_,1,psb_mpi_c_dpk_,mpi_sum,ictxt,info)
dat = dat_
#endif
end subroutine psb_zscan_sums
subroutine psb_zexscan_sums(ictxt,dat)
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat
complex(psb_dpk_) :: dat_
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
call mpi_exscan(dat,dat_,1,psb_mpi_c_dpk_,mpi_sum,ictxt,info)
dat = dat_
#else
dat = zzero
#endif
end subroutine psb_zexscan_sums
subroutine psb_zscan_sumv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_) &
& call mpi_scan(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_sum,ictxt,info)
#endif
end subroutine psb_zscan_sumv
subroutine psb_zexscan_sumv(ictxt,dat,root)
use psb_realloc_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer(psb_mpk_), intent(in) :: ictxt
complex(psb_dpk_), intent(inout) :: dat(:)
integer(psb_mpk_), intent(in), optional :: root
integer(psb_mpk_) :: root_
complex(psb_dpk_), allocatable :: dat_(:)
integer(psb_mpk_) :: iam, np, info
integer(psb_ipk_) :: iinfo
#if !defined(SERIAL_MPI)
call psb_info(ictxt,iam,np)
call psb_realloc(size(dat),dat_,iinfo)
dat_ = dat
if (iinfo == psb_success_) &
& call mpi_exscan(dat,dat_,size(dat),psb_mpi_c_dpk_,mpi_sum,ictxt,info)
#else
dat = zzero
#endif
end subroutine psb_zexscan_sumv
end module psi_z_collective_mod