You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
428 lines
13 KiB
Fortran
428 lines
13 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_ihalo.f90
|
|
!
|
|
! Subroutine: psb_ihalom
|
|
! This subroutine performs the exchange of the halo elements in a
|
|
! distributed dense matrix between all the processes.
|
|
!
|
|
! Arguments:
|
|
! x - integer,dimension(:,:). The local part of the dense matrix.
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
! alpha - real(optional). Scale factor.
|
|
! jx - integer(optional). The starting column of the global matrix.
|
|
! ik - integer(optional). The number of columns to gather.
|
|
! work - real(optional). Work area.
|
|
! tran - character(optional). Transpose exchange.
|
|
! mode - integer(optional). Communication mode (see Swapdata)
|
|
! data - integer Which index list in desc_a should be used
|
|
! to retrieve rows, default psb_comm_halo_
|
|
! psb_comm_halo_ use halo_index
|
|
! psb_comm_ext_ use ext_index
|
|
! psb_comm_ovrl_ use ovrl_index
|
|
! psb_comm_mov_ use ovr_mst_idx
|
|
!
|
|
!
|
|
subroutine psb_ihalom(x,desc_a,info,alpha,jx,ik,work,tran,mode,data)
|
|
use psb_base_mod, psb_protect_name => psb_ihalom
|
|
use psi_mod
|
|
implicit none
|
|
|
|
integer, intent(inout), target :: x(:,:)
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(out) :: info
|
|
real(psb_dpk_), intent(in), optional :: alpha
|
|
integer, intent(inout), optional, target :: work(:)
|
|
integer, intent(in), optional :: mode,jx,ik,data
|
|
character, intent(in), optional :: tran
|
|
|
|
! locals
|
|
integer :: ictxt, np, me, &
|
|
& err_act, m, n, iix, jjx, ix, ijx, nrow, k, maxk, liwork,&
|
|
& imode, err,data_
|
|
integer, pointer :: xp(:,:), iwork(:)
|
|
character :: tran_
|
|
character(len=20) :: name, ch_err
|
|
logical :: aliw
|
|
|
|
name='psb_ihalom'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=psb_cd_get_context(desc_a)
|
|
|
|
! 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
|
|
|
|
ix = 1
|
|
if (present(jx)) then
|
|
ijx = jx
|
|
else
|
|
ijx = 1
|
|
endif
|
|
|
|
m = psb_cd_get_global_rows(desc_a)
|
|
n = psb_cd_get_global_cols(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
|
|
maxk=size(x,2)-ijx+1
|
|
|
|
if(present(ik)) then
|
|
if(ik > maxk) then
|
|
k=maxk
|
|
else
|
|
k=ik
|
|
end if
|
|
else
|
|
k = maxk
|
|
end if
|
|
|
|
if (present(tran)) then
|
|
tran_ = psb_toupper(tran)
|
|
else
|
|
tran_ = 'N'
|
|
endif
|
|
|
|
if (present(data)) then
|
|
data_ = data
|
|
else
|
|
data_ = psb_comm_halo_
|
|
endif
|
|
|
|
|
|
if (present(mode)) then
|
|
imode = mode
|
|
else
|
|
imode = IOR(psb_swap_send_,psb_swap_recv_)
|
|
endif
|
|
|
|
! check vector correctness
|
|
call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
end if
|
|
|
|
if (iix /= 1) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
end if
|
|
|
|
err=info
|
|
call psb_errcomm(ictxt,err)
|
|
if(err /= 0) goto 9999
|
|
|
|
|
|
! we should write an "iscal"
|
|
!!$ if(present(alpha)) then
|
|
!!$ if(alpha /= 1.d0) then
|
|
!!$ do i=0, k-1
|
|
!!$ call iscal(nrow,alpha,x(1,jjx+i),1)
|
|
!!$ end do
|
|
!!$ end if
|
|
!!$ end if
|
|
|
|
liwork=nrow
|
|
if (present(work)) then
|
|
if(size(work) >= liwork) then
|
|
aliw=.false.
|
|
iwork => work
|
|
else
|
|
aliw=.true.
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
else
|
|
aliw=.true.
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
|
|
xp => x(iix:size(x,1),jjx:jjx+k-1)
|
|
! exchange halo elements
|
|
if(tran_ == 'N') then
|
|
call psi_swapdata(imode,k,izero,xp,&
|
|
& desc_a,iwork,info,data=data_)
|
|
else if((tran_ == 'T').or.(tran_ == 'C')) then
|
|
call psi_swaptran(imode,k,ione,xp,&
|
|
& desc_a,iwork,info)
|
|
else
|
|
info = psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='invalid tran')
|
|
goto 9999
|
|
end if
|
|
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='PSI_iSwap...')
|
|
goto 9999
|
|
end if
|
|
|
|
if (aliw) deallocate(iwork)
|
|
nullify(iwork)
|
|
|
|
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_ihalom
|
|
|
|
|
|
|
|
|
|
!!$
|
|
!!$ 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_ihalov
|
|
! This subroutine performs the exchange of the halo elements in a
|
|
! distributed dense matrix between all the processes.
|
|
!
|
|
! Arguments:
|
|
! x - integer,dimension(:). The local part of the dense matrix.
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
! alpha - real(optional). Scale factor.
|
|
! jx - integer(optional). The starting column of the global matrix.
|
|
! ik - integer(optional). The number of columns to gather.
|
|
! work - real(optional). Work area.
|
|
! tran - character(optional). Transpose exchange.
|
|
! mode - integer(optional). Communication mode (see Swapdata)
|
|
! data - integer Which index list in desc_a should be used
|
|
! to retrieve rows, default psb_comm_halo_
|
|
! psb_comm_halo_ use halo_index
|
|
! psb_comm_ext_ use ext_index
|
|
! psb_comm_ovrl_ use ovrl_index
|
|
! psb_comm_mov_ use ovr_mst_idx
|
|
!
|
|
!
|
|
subroutine psb_ihalov(x,desc_a,info,alpha,work,tran,mode,data)
|
|
use psb_base_mod, psb_protect_name => psb_ihalov
|
|
use psi_mod
|
|
implicit none
|
|
|
|
integer, intent(inout) :: x(:)
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(out) :: info
|
|
real(psb_dpk_), intent(in), optional :: alpha
|
|
integer, intent(inout), optional, target :: work(:)
|
|
integer, intent(in), optional :: mode,data
|
|
character, intent(in), optional :: tran
|
|
|
|
! locals
|
|
integer :: ictxt, np, me,&
|
|
& err_act, m, n, iix, jjx, ix, ijx, nrow, imode,&
|
|
& err, liwork, data_
|
|
integer,pointer :: iwork(:)
|
|
character :: tran_
|
|
character(len=20) :: name, ch_err
|
|
logical :: aliw
|
|
|
|
name='psb_ihalov'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=psb_cd_get_context(desc_a)
|
|
|
|
! 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
|
|
|
|
ix = 1
|
|
ijx = 1
|
|
|
|
m = psb_cd_get_global_rows(desc_a)
|
|
n = psb_cd_get_global_cols(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
! ncol = psb_cd_get_local_cols(desc_a)
|
|
|
|
|
|
if (present(tran)) then
|
|
tran_ = psb_toupper(tran)
|
|
else
|
|
tran_ = 'N'
|
|
endif
|
|
if (present(data)) then
|
|
data_ = data
|
|
else
|
|
data_ = psb_comm_halo_
|
|
endif
|
|
if (present(mode)) then
|
|
imode = mode
|
|
else
|
|
imode = IOR(psb_swap_send_,psb_swap_recv_)
|
|
endif
|
|
|
|
! check vector correctness
|
|
call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
end if
|
|
|
|
if (iix /= 1) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
end if
|
|
|
|
err=info
|
|
call psb_errcomm(ictxt,err)
|
|
if(err /= 0) goto 9999
|
|
|
|
!!$ if(present(alpha)) then
|
|
!!$ if(alpha /= 1.d0) then
|
|
!!$ call dscal(nrow,alpha,x,1)
|
|
!!$ end if
|
|
!!$ end if
|
|
|
|
liwork=nrow
|
|
if (present(work)) then
|
|
if(size(work) >= liwork) then
|
|
aliw=.false.
|
|
iwork => work
|
|
else
|
|
aliw=.true.
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
else
|
|
aliw=.true.
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
|
|
! exchange halo elements
|
|
if(tran_ == 'N') then
|
|
call psi_swapdata(imode,izero,x(iix:size(x)),&
|
|
& desc_a,iwork,info,data=data_)
|
|
else if((tran_ == 'T').or.(tran_ == 'C')) then
|
|
call psi_swaptran(imode,ione,x(iix:size(x)),&
|
|
& desc_a,iwork,info)
|
|
else
|
|
info = psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='invalid tran')
|
|
goto 9999
|
|
end if
|
|
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='PSI_iswapdata')
|
|
goto 9999
|
|
end if
|
|
|
|
if (aliw) deallocate(iwork)
|
|
nullify(iwork)
|
|
|
|
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_ihalov
|
|
|
|
|
|
|