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psblas3/base/comm/psb_dgather.f90

459 lines
14 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS version 3.0
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
!!$
!!$ 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.
!!$
!!$
! File: psb_dgather.f90
!
! Subroutine: psb_dgatherm
! This subroutine gathers pieces of a distributed dense matrix into a local one.
!
! Arguments:
! globx - real,dimension(:,:). The local matrix into which gather
! the distributed pieces.
! locx - real,dimension(:,:). The local piece of the distributed
! matrix to be gathered.
! desc_a - type(psb_desc_type). The communication descriptor.
! info - integer. Error code.
! iroot - integer. The process that has to own the
! global matrix. If -1 all
! the processes will have a copy.
!
subroutine psb_dgatherm(globx, locx, desc_a, info, iroot)
use psb_base_mod, psb_protect_name => psb_dgatherm
implicit none
real(psb_dpk_), intent(in) :: locx(:,:)
real(psb_dpk_), intent(out), allocatable :: globx(:,:)
type(psb_desc_type), intent(in) :: desc_a
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iroot
! locals
integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
integer(psb_ipk_) :: ierr(5), err_act, n, ilocx, iglobx, jlocx,&
& jglobx, lda_locx, lda_globx, m, lock, globk, maxk, k, jlx, ilx, i, j, idx
character(len=20) :: name, ch_err
name='psb_dgatherm'
if(psb_get_errstatus() /= 0) return
info=psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
! check on blacs grid
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (present(iroot)) then
root = iroot
if((root < -1).or.(root > np)) then
info=psb_err_input_value_invalid_i_
ierr(1) = 5; ierr(2)=root
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
else
root = -1
end if
if (root == -1) then
iiroot = psb_root_
else
iiroot = root
endif
iglobx = 1
jglobx = 1
ilocx = 1
jlocx = 1
m = desc_a%get_global_rows()
n = desc_a%get_global_cols()
lda_globx = m
lda_locx = size(locx, 1)
lock = size(locx,2)
maxk = lock
k = maxk
call psb_bcast(ictxt,k,root=iiroot)
! there should be a global check on k here!!!
call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
if (info == psb_success_) &
& call psb_chkvect(m,n,lda_locx,ilocx,jlocx,desc_a,info,ilx,jlx)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chk(glob)vect'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if ((ilx /= 1).or.(iglobx /= 1)) then
info=psb_err_ix_n1_iy_n1_unsupported_
call psb_errpush(info,name)
goto 9999
end if
call psb_realloc(m,k,globx,info)
if (info /= psb_success_) then
info=psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
globx(:,:)=dzero
do j=1,k
do i=1,desc_a%get_local_rows()
call psb_loc_to_glob(i,idx,desc_a,info)
globx(idx,j) = locx(i,jlx+j-1)
end do
end do
do j=1,k
! adjust overlapped elements
do i=1, size(desc_a%ovrlap_elem,1)
if (me /= desc_a%ovrlap_elem(i,3)) then
idx = desc_a%ovrlap_elem(i,1)
call psb_loc_to_glob(idx,desc_a,info)
globx(idx,j) = dzero
end if
end do
end do
call psb_sum(ictxt,globx(1:m,1:k),root=root)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_dgatherm
!!$
!!$ Parallel Sparse BLAS version 3.0
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
!!$
!!$ 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.
!!$
!!$
! Subroutine: psb_dgatherv
! This subroutine gathers pieces of a distributed dense vector into a local one.
!
! Arguments:
! globx - real,dimension(:). The local vector into which gather
! the distributed pieces.
! locx - real,dimension(:). The local piece of the distributed
! vector to be gathered.
! desc_a - type(psb_desc_type). The communication descriptor.
! info - integer. Error code.
! iroot - integer. The process that has to own the
! global matrix. If -1 all
! the processes will have a copy.
! default: -1
!
subroutine psb_dgatherv(globx, locx, desc_a, info, iroot)
use psb_base_mod, psb_protect_name => psb_dgatherv
implicit none
real(psb_dpk_), intent(in) :: locx(:)
real(psb_dpk_), intent(out), allocatable :: globx(:)
type(psb_desc_type), intent(in) :: desc_a
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iroot
! locals
integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
integer(psb_ipk_) :: ierr(5), err_act, n, ilocx, iglobx, jlocx,&
& jglobx, lda_locx, lda_globx, m, k, jlx, ilx, i, idx
character(len=20) :: name, ch_err
name='psb_dgatherv'
if(psb_get_errstatus() /= 0) return
info=psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
! check on blacs grid
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (present(iroot)) then
root = iroot
if((root < -1).or.(root > np)) then
info=psb_err_input_value_invalid_i_
ierr(1)=5; ierr(2)=root
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
else
root = -1
end if
jglobx=1
iglobx = 1
jlocx=1
ilocx = 1
m = desc_a%get_global_rows()
n = desc_a%get_global_cols()
lda_globx = m
lda_locx = size(locx)
k = 1
! there should be a global check on k here!!!
call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
if (info == psb_success_) &
& call psb_chkvect(m,n,lda_locx,ilocx,jlocx,desc_a,info,ilx,jlx)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chk(glob)vect'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if ((ilx /= 1).or.(iglobx /= 1)) then
info=psb_err_ix_n1_iy_n1_unsupported_
call psb_errpush(info,name)
goto 9999
end if
call psb_realloc(m,globx,info)
if (info /= psb_success_) then
info=psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
globx(:)=dzero
do i=1,desc_a%get_local_rows()
call psb_loc_to_glob(i,idx,desc_a,info)
globx(idx) = locx(i)
end do
! adjust overlapped elements
do i=1, size(desc_a%ovrlap_elem,1)
if (me /= desc_a%ovrlap_elem(i,3)) then
idx = desc_a%ovrlap_elem(i,1)
call psb_loc_to_glob(idx,desc_a,info)
globx(idx) = dzero
end if
end do
call psb_sum(ictxt,globx(1:m),root=root)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_dgatherv
subroutine psb_dgather_vect(globx, locx, desc_a, info, iroot)
use psb_base_mod, psb_protect_name => psb_dgather_vect
implicit none
type(psb_d_vect_type), intent(inout) :: locx
real(psb_dpk_), intent(out), allocatable :: globx(:)
type(psb_desc_type), intent(in) :: desc_a
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iroot
! locals
integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
integer(psb_ipk_) :: ierr(5), err_act, n, ilocx, iglobx, jlocx,&
& jglobx, lda_locx, lda_globx, m, k, jlx, ilx, i, idx
real(psb_dpk_), allocatable :: llocx(:)
character(len=20) :: name, ch_err
name='psb_cgatherv'
if(psb_get_errstatus() /= 0) return
info=psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
! check on blacs grid
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (present(iroot)) then
root = iroot
if((root < -1).or.(root > np)) then
info=psb_err_input_value_invalid_i_
ierr(1)=5; ierr(2)=root;
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
else
root = -1
end if
jglobx=1
iglobx = 1
jlocx=1
ilocx = 1
m = desc_a%get_global_rows()
n = desc_a%get_global_cols()
lda_globx = m
lda_locx = locx%get_nrows()
k = 1
! there should be a global check on k here!!!
call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
if (info == psb_success_) &
& call psb_chkvect(m,n,locx%get_nrows(),ilocx,jlocx,desc_a,info,ilx,jlx)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_chk(glob)vect'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if ((ilx /= 1).or.(iglobx /= 1)) then
info=psb_err_ix_n1_iy_n1_unsupported_
call psb_errpush(info,name)
goto 9999
end if
call psb_realloc(m,globx,info)
if (info /= psb_success_) then
info=psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
globx(:) = dzero
llocx = locx%get_vect()
do i=1,desc_a%get_local_rows()
call psb_loc_to_glob(i,idx,desc_a,info)
globx(idx) = llocx(i)
end do
! adjust overlapped elements
do i=1, size(desc_a%ovrlap_elem,1)
if (me /= desc_a%ovrlap_elem(i,3)) then
idx = desc_a%ovrlap_elem(i,1)
call psb_loc_to_glob(idx,desc_a,info)
globx(idx) = dzero
end if
end do
call psb_sum(ictxt,globx(1:m),root=root)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_dgather_vect