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716 lines
20 KiB
Fortran
716 lines
20 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: psb_sspsm.f90
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!
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!
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! Subroutine: psb_ssps_vect
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! Performs one of the distributed matrix-vector operations
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!
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! Y := alpha * Pr * A-1 * Pc * X + beta * Y, or
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!
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! Y := alpha * D * Pr * A-1 * Pc * X + beta * Y, or
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!
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! Y := alpha * Pr * A-1 * Pc * D * X + beta * Y, or
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!
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! Y := alpha * Pr * A-T * Pc * X + beta * Y, or
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!
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! Y := alpha * D * Pr * A-T * Pc * X + beta * Y, or
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!
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! Y := alpha * Pr * A-T * Pc * D * X + beta * Y, or
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!
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! X is a distributed
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! vector and T is a M-by-M distributed triangular matrix.
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!
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!
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! Arguments:
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! alpha - real. The scalar alpha.
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! a - type(psb_sspmat_type). The sparse matrix containing A.
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! x - type(psb_s_vect_type) The input vector containing the entries of ( X ).
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! beta - real The scalar beta.
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! y - type(psb_s_vect_type) The input vector containing the entries of ( Y ).
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
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! scale - character(optional). Specify some type of operation with
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! the diagonal matrix D.
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! choice - integer(optional). The kind of update to perform on overlap elements.
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! d(:) - real, optional Matrix for diagonal scaling.
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! work(:) - real, optional Working area.
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!
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subroutine psb_sspsv_vect(alpha,a,x,beta,y,desc_a,info,&
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& trans, scale, choice, diag, work)
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use psb_base_mod, psb_protect_name => psb_sspsv_vect
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use psi_mod
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implicit none
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real(psb_spk_), intent(in) :: alpha, beta
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type(psb_s_vect_type), intent(inout) :: x
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type(psb_s_vect_type), intent(inout) :: y
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type(psb_sspmat_type), intent(inout) :: a
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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type(psb_s_vect_type), intent(inout), optional :: diag
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real(psb_spk_), optional, target, intent(inout) :: work(:)
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character, intent(in), optional :: trans, scale
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integer(psb_ipk_), intent(in), optional :: choice
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me, &
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& err_act, iix, jjx, ia, ja, iia, jja, lldx,lldy, choice_,&
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& ix, iy, ik, jx, jy, i, lld,&
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& m, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
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character :: lscale
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integer(psb_ipk_), parameter :: nb=4
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real(psb_spk_),pointer :: iwork(:), xp(:), yp(:)
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character :: itrans
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_sspsv_vect'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ctxt=desc_a%get_context()
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call psb_info(ctxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(x%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(y%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(choice)) then
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choice_ = choice
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else
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choice_ = psb_avg_
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endif
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if (present(scale)) then
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lscale = psb_toupper(scale)
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else
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lscale = 'U'
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endif
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if (present(trans)) then
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itrans = psb_toupper(trans)
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if((itrans == 'N').or.(itrans == 'T').or.(itrans == 'C')) then
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! Ok
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else
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info = psb_err_iarg_invalid_value_
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call psb_errpush(info,name)
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goto 9999
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end if
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else
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itrans = 'N'
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endif
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m = desc_a%get_global_rows()
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nrow = desc_a%get_local_rows()
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ncol = desc_a%get_local_cols()
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lldx = x%get_nrows()
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lldy = y%get_nrows()
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if ((info == 0).and.(lldx<ncol)) call x%reall(ncol,info)
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if ((info == 0).and.(lldy<ncol)) call y%reall(ncol,info)
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if (psb_errstatus_fatal()) then
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info=psb_err_from_subroutine_
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ch_err='reall'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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iwork => null()
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! check for presence/size of a work area
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liwork= 2*ncol
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if (present(work)) then
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if (size(work) >= liwork) then
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aliw =.false.
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else
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aliw=.true.
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endif
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else
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aliw=.true.
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end if
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if (aliw) then
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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else
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iwork => work
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endif
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iwork(1)=0.d0
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! Perform local triangular system solve
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if (present(diag)) then
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call a%spsm(alpha,x,beta,y,info,scale=scale,d=diag,trans=trans)
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else
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call a%spsm(alpha,x,beta,y,info,scale=scale,trans=trans)
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end if
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if(info /= psb_success_) then
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info = psb_err_from_subroutine_
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ch_err='dcssm'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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! update overlap elements
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if (choice_ > 0) then
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call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),&
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& sone,y%v,desc_a,iwork,info,data=psb_comm_ovr_)
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if (info == psb_success_) call psi_ovrl_upd(y%v,desc_a,choice_,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Inner updates')
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goto 9999
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end if
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end if
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if (aliw) deallocate(iwork)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ctxt,err_act)
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return
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end subroutine psb_sspsv_vect
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!
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! Subroutine: psb_sspsm
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! Performs one of the distributed matrix-vector operations
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!
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! sub( Y ) := alpha * Pr * A-1 * Pc *sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * D * Pr * A-1 * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-1 * Pc * D * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * D * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-T * Pc * D * sub( X ) + beta * sub (Y ), or
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!
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! where :
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!
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! sub( X ) denotes X(1:M,JX:JX+K-1),
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!
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! sub( Y ) denotes Y(1:M,JY:JY+K-1).
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!
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! sub( X ) is a distributed
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! vector and T is a M-by-M distributed triangular matrix.
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!
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! Arguments:
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! alpha - real. The scalar alpha.
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! a - type(psb_sspmat_type). The sparse matrix containing A.
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! x(:,:) - real The input vector containing the entries of ( X ).
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! beta - real The scalar beta.
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! y(:,:) - real The input vector containing the entries of ( Y ).
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
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! scale - character(optional). Specify some type of operation with
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! the diagonal matrix D.
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! choice - integer(optional). The kind of update to perform on overlap elements.
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! d(:) - real, optional Matrix for diagonal scaling.
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! k - integer(optional). The number of right-hand sides.
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! jx - integer(optional). The column offset for ( X ). Default: 1
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! jy - integer(optional). The column offset for ( Y ). Default: 1
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! work(:) - real, optional Working area.
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!
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subroutine psb_sspsm(alpha,a,x,beta,y,desc_a,info,&
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& trans, scale, choice, diag, k, jx, jy, work)
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use psb_base_mod, psb_protect_name => psb_sspsm
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use psi_mod
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implicit none
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real(psb_spk_), intent(in) :: alpha, beta
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real(psb_spk_), intent(in), target :: x(:,:)
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real(psb_spk_), intent(inout), target :: y(:,:)
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type (psb_sspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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real(psb_spk_), intent(in), optional, target :: diag(:)
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real(psb_spk_), optional, target, intent(inout) :: work(:)
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character, intent(in), optional :: trans, scale
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integer(psb_ipk_), intent(in), optional :: choice
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integer(psb_ipk_), intent(in), optional :: k, jx, jy
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me,&
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& err_act, iix, jjx, iia, jja, lldx,lldy, choice_,&
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& ik, i, lld, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
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integer(psb_lpk_) :: ix, ijx, iy, ijy, m, n, ia, ja, lik
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character :: lscale
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integer(psb_ipk_), parameter :: nb=4
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real(psb_spk_),pointer :: iwork(:), xp(:,:), yp(:,:), id(:)
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character :: itrans
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_sspsm'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ctxt=desc_a%get_context()
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call psb_info(ctxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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! just this case right now
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ia = 1
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ja = 1
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ix = 1
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if (present(jx)) then
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ijx = jx
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else
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ijx = 1
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endif
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iy = 1
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if (present(jy)) then
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ijy = jy
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else
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ijy = 1
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endif
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if (present(k)) then
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lik = min(k,size(x,2)-ijx+1)
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lik = min(lik,size(y,2)-ijy+1)
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else
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lik = min(size(x,2)-ijx+1,size(y,2)-ijy+1)
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endif
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if (present(choice)) then
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choice_ = choice
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else
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choice_ = psb_avg_
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endif
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if (present(scale)) then
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lscale = psb_toupper(scale)
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else
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lscale = 'U'
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endif
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if (present(trans)) then
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itrans = psb_toupper(trans)
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if((itrans == 'N').or.(itrans == 'T').or. (itrans == 'C')) then
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! OK
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else
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info = psb_err_iarg_invalid_value_
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call psb_errpush(info,name)
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goto 9999
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end if
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else
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itrans = 'N'
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endif
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m = desc_a%get_global_rows()
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nrow = desc_a%get_local_rows()
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ncol = desc_a%get_local_cols()
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lldx = size(x,1)
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lldy = size(y,1)
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if((lldx < ncol).or.(lldy < ncol)) then
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info=psb_err_lld_case_not_implemented_
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call psb_errpush(info,name)
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goto 9999
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end if
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! check for presence/size of a work area
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iwork => null()
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liwork= 2*ncol
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if (present(work)) then
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if (size(work) >= liwork) then
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aliw =.false.
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else
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aliw=.true.
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endif
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else
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aliw=.true.
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end if
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if (aliw) then
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allocate(iwork(liwork),stat=info)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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else
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iwork => work
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endif
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iwork(1)=0.d0
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if(present(diag)) then
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lld = size(diag)
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id => diag
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else
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lld=1
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allocate(id(1))
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id=1.d0
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end if
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! checking for matrix correctness
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call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
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! checking for vectors correctness
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if (info == psb_success_) &
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& call psb_chkvect(m,lik,lldx,ix,ijx,desc_a,info,iix,jjx,check_halo=.true.)
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if (info == psb_success_) &
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& call psb_chkvect(m,lik,lldy,iy,ijy,desc_a,info,iiy,jjy,check_halo=.true.)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect/mat'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if(ja /= ix) then
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! this case is not yet implemented
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info = psb_err_ja_nix_ia_niy_unsupported_
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end if
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if((iix /= 1).or.(iiy /= 1)) then
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! this case is not yet implemented
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info = psb_err_ix_n1_iy_n1_unsupported_
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end if
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if(info /= psb_success_) then
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call psb_errpush(info,name)
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goto 9999
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end if
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ik = lik ! This should not be a problem.
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! We expect ik to be small, well within IPK
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! Perform local triangular system solve
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xp => x(iix:lldx,jjx:jjx+ik-1)
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yp => y(iiy:lldy,jjy:jjy+ik-1)
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call psb_cssm(alpha,a,xp,beta,yp,info,scale=scale,d=diag,trans=trans)
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if(info /= psb_success_) then
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info = psb_err_from_subroutine_
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ch_err='cssm'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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! update overlap elements
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if (choice_ > 0) then
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call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),ik,&
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& sone,yp,desc_a,iwork,info,data=psb_comm_ovr_)
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if (info == psb_success_) call psi_ovrl_upd(yp,desc_a,choice_,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Inner updates')
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goto 9999
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end if
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end if
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if(aliw) deallocate(iwork)
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if(.not.present(diag)) deallocate(id)
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call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ctxt,err_act)
|
|
|
|
return
|
|
end subroutine psb_sspsm
|
|
!
|
|
! Subroutine: psb_sspsv
|
|
! Performs one of the distributed matrix-vector operations
|
|
!
|
|
! Y := alpha * Pr * A-1 * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * D * Pr * A-1 * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-1 * Pc * D * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-T * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * D * Pr * A-T * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-T * Pc * D * X + beta * Y, or
|
|
!
|
|
! X is a distributed
|
|
! vector and T is a M-by-M distributed triangular matrix.
|
|
!
|
|
!
|
|
! Arguments:
|
|
! alpha - real. The scalar alpha.
|
|
! a - type(psb_sspmat_type). The sparse matrix containing A.
|
|
! x(:) - real The input vector containing the entries of ( X ).
|
|
! beta - real The scalar beta.
|
|
! y(:) - real The input vector containing the entries of ( Y ).
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
|
|
! scale - character(optional). Specify some type of operation with
|
|
! the diagonal matrix D.
|
|
! choice - integer(optional). The kind of update to perform on overlap elements.
|
|
! d(:) - real, optional Matrix for diagonal scaling.
|
|
! work(:) - real, optional Working area.
|
|
!
|
|
subroutine psb_sspsv(alpha,a,x,beta,y,desc_a,info,&
|
|
& trans, scale, choice, diag, work)
|
|
use psb_base_mod, psb_protect_name => psb_sspsv
|
|
use psi_mod
|
|
implicit none
|
|
|
|
real(psb_spk_), intent(in) :: alpha, beta
|
|
real(psb_spk_), intent(in), target :: x(:)
|
|
real(psb_spk_), intent(inout), target :: y(:)
|
|
type(psb_sspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(out) :: info
|
|
real(psb_spk_), intent(in), optional, target :: diag(:)
|
|
real(psb_spk_), optional, target, intent(inout) :: work(:)
|
|
character, intent(in), optional :: trans, scale
|
|
integer(psb_ipk_), intent(in), optional :: choice
|
|
|
|
! locals
|
|
type(psb_ctxt_type) :: ctxt
|
|
integer(psb_ipk_) :: np, me, &
|
|
& err_act, iix, jjx, iia, jja, lldx,lldy, choice_,&
|
|
& ik, i, lld, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
|
|
integer(psb_lpk_) :: ix, ijx, iy, ijy, m, n, ia, ja, lik, jx, jy
|
|
|
|
character :: lscale
|
|
integer(psb_ipk_), parameter :: nb=4
|
|
real(psb_spk_),pointer :: iwork(:), xp(:), yp(:), id(:)
|
|
character :: itrans
|
|
character(len=20) :: name, ch_err
|
|
logical :: aliw
|
|
|
|
name='psb_sspsv'
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
if (psb_errstatus_fatal()) then
|
|
info = psb_err_internal_error_ ; goto 9999
|
|
end if
|
|
|
|
ctxt=desc_a%get_context()
|
|
|
|
call psb_info(ctxt, me, np)
|
|
if (np == -1) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
! just this case right now
|
|
ia = 1
|
|
ja = 1
|
|
ix = 1
|
|
iy = 1
|
|
lik = 1
|
|
ik = 1
|
|
jx = 1
|
|
jy = 1
|
|
|
|
if (present(choice)) then
|
|
choice_ = choice
|
|
else
|
|
choice_ = psb_avg_
|
|
endif
|
|
|
|
if (present(scale)) then
|
|
lscale = psb_toupper(scale)
|
|
else
|
|
lscale = 'U'
|
|
endif
|
|
|
|
if (present(trans)) then
|
|
itrans = psb_toupper(trans)
|
|
if((itrans == 'N').or.(itrans == 'T').or.(itrans == 'C')) then
|
|
! Ok
|
|
else
|
|
info = psb_err_iarg_invalid_value_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
else
|
|
itrans = 'N'
|
|
endif
|
|
|
|
m = desc_a%get_global_rows()
|
|
nrow = desc_a%get_local_rows()
|
|
ncol = desc_a%get_local_cols()
|
|
lldx = size(x)
|
|
lldy = size(y)
|
|
|
|
if((lldx < ncol).or.(lldy < ncol)) then
|
|
info=psb_err_lld_case_not_implemented_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
iwork => null()
|
|
! check for presence/size of a work area
|
|
liwork= 2*ncol
|
|
|
|
if (present(work)) then
|
|
if (size(work) >= liwork) then
|
|
aliw =.false.
|
|
else
|
|
aliw=.true.
|
|
endif
|
|
else
|
|
aliw=.true.
|
|
end if
|
|
|
|
if (aliw) then
|
|
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
|
|
else
|
|
iwork => work
|
|
endif
|
|
|
|
iwork(1)=0.d0
|
|
|
|
if(present(diag)) then
|
|
lld = size(diag)
|
|
id => diag
|
|
else
|
|
lld=1
|
|
allocate(id(1))
|
|
id=1.d0
|
|
end if
|
|
|
|
! checking for matrix correctness
|
|
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
|
|
! checking for vectors correctness
|
|
if (info == psb_success_) &
|
|
& call psb_chkvect(m,lik,lldx,ix,jx,desc_a,info,iix,jjx,check_halo=.true.)
|
|
if (info == psb_success_) &
|
|
& call psb_chkvect(m,lik,lldy,iy,jy,desc_a,info,iiy,jjy,check_halo=.true.)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect/mat'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if(ja /= ix) then
|
|
! this case is not yet implemented
|
|
info = psb_err_ja_nix_ia_niy_unsupported_
|
|
end if
|
|
|
|
if((iix /= 1).or.(iiy /= 1)) then
|
|
! this case is not yet implemented
|
|
info = psb_err_ix_n1_iy_n1_unsupported_
|
|
end if
|
|
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
! Perform local triangular system solve
|
|
xp => x(iix:lldx)
|
|
yp => y(iiy:lldy)
|
|
call psb_cssm(alpha,a,xp,beta,yp,info,scale=scale,d=diag,trans=trans)
|
|
|
|
if(info /= psb_success_) then
|
|
info = psb_err_from_subroutine_
|
|
ch_err='dcssm'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
! update overlap elements
|
|
if(choice_ > 0) then
|
|
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),&
|
|
& sone,yp,desc_a,iwork,info,data=psb_comm_ovr_)
|
|
|
|
|
|
if (info == psb_success_) call psi_ovrl_upd(yp,desc_a,choice_,info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='Inner updates')
|
|
goto 9999
|
|
end if
|
|
end if
|
|
|
|
if (aliw) deallocate(iwork)
|
|
if(.not.present(diag)) deallocate(id)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ctxt,err_act)
|
|
|
|
return
|
|
end subroutine psb_sspsv
|
|
|