Working parallel (QR_fact serial)
gabrielequatrana
1 year ago
parent
d10631530f
commit
676652fcff
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!
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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_dprod.f90
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!
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! Function: psb_dprod_multivect
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! psb_dprod computes the product of two distributed multivectors,
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!
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! prod := ( X ) * ( Y ) or
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! prod := ( X )**C * ( Y )
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!
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!
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! Arguments:
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! x - type(psb_d_multivect_type) The input vector containing the entries of sub( X ).
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! y - type(psb_d_multivect_type) The input vector containing the entries of sub( 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 - logical(optional) Whether multivector X is transposed, default: .false.
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! global - logical(optional) Whether to perform the global reduce, default: .true.
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!
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! Note: from a functional point of view, X and Y are input, but here
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! they are declared INOUT because of the sync() methods.
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!
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!
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function psb_dprod_multivect(x,y,desc_a,info,trans,global) result(res)
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use psb_desc_mod
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use psb_d_base_mat_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_d_vect_mod
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use psb_d_psblas_mod, psb_protect_name => psb_dprod_multivect
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implicit none
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real(psb_dpk_), allocatable :: res(:,:)
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type(psb_d_multivect_type), intent(inout) :: x, y
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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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logical, intent(in), optional :: trans
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logical, intent(in), optional :: global
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me, idx, ndm,&
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& err_act, iix, jjx, iiy, jjy, i, j, nr
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integer(psb_lpk_) :: ix, ijx, iy, ijy, m
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logical :: global_, trans_
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character(len=20) :: name, ch_err
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name='psb_dprod_multivect'
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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 == -ione) 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(trans)) then
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trans_ = trans
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else
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trans_ = .false.
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end if
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = ione
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ijx = ione
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iy = ione
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ijy = ione
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m = desc_a%get_global_rows()
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! check vector correctness
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call psb_chkvect(m,x%get_ncols(),x%get_nrows(),ix,ijx,desc_a,info,iix,jjx)
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if (info == psb_success_) &
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& call psb_chkvect(m,y%get_ncols(),y%get_nrows(),iy,ijy,desc_a,info,iiy,jjy)
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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'
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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 ((iix /= ione).or.(iiy /= ione)) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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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nr = desc_a%get_local_rows()
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if (nr > 0) then
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res = x%prod(nr,y,trans_)
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! TODO adjust dot_local because overlapped elements are computed more than once
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if (size(desc_a%ovrlap_elem,1)>0) then
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if (x%v%is_dev()) call x%sync()
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if (y%v%is_dev()) call y%sync()
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do j=1,x%get_ncols()
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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res(j,:) = res(j,:) - (real(ndm-1)/real(ndm))*(x%v%v(idx,:)*y%v%v(idx,:))
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end do
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end do
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end if
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else
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res = dzero
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end if
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! TODO forse è meglio global false di default
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! compute global sum
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if (global_) call psb_sum(ctxt, res)
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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 function psb_dprod_multivect
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!
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! Function: psb_dprod_multivect_a
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! psb_dprod computes the product of two distributed multivectors,
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!
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! prod := ( X ) * ( Y ) or
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! prod := ( X )**C * ( Y )
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!
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!
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! Arguments:
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! x - type(psb_d_multivect_type) The input vector containing the entries of sub( X ).
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! y - real(:,:) The input vector containing the entries of sub( 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 - logical(optional) Whether multivector X is transposed, default: .false.
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! global - logical(optional) Whether to perform the global reduce, default: .true.
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!
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! Note: from a functional point of view, X and Y are input, but here
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! they are declared INOUT because of the sync() methods.
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!
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!
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function psb_dprod_multivect_a(x,y,desc_a,info,trans,global) result(res)
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use psb_desc_mod
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use psb_d_base_mat_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_d_vect_mod
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use psb_d_psblas_mod, psb_protect_name => psb_dprod_multivect_a
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implicit none
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real(psb_dpk_), allocatable :: res(:,:)
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type(psb_d_multivect_type), intent(inout) :: x
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real(psb_dpk_), intent(in) :: y(:,:)
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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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logical, intent(in), optional :: trans
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logical, intent(in), optional :: global
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! locals
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type(psb_ctxt_type) :: ctxt
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integer(psb_ipk_) :: np, me, idx, ndm,&
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& err_act, iix, jjx, iiy, jjy, i, j, nr
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integer(psb_lpk_) :: ix, ijx, iy, ijy, m
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logical :: global_, trans_
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character(len=20) :: name, ch_err
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name='psb_dprod_multivect'
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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 == -ione) 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 (present(trans)) then
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trans_ = trans
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else
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trans_ = .false.
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end if
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = ione
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ijx = ione
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m = desc_a%get_global_rows()
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! check vector correctness
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call psb_chkvect(m,x%get_ncols(),x%get_nrows(),ix,ijx,desc_a,info,iix,jjx)
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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'
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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 ((iix /= ione)) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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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nr = desc_a%get_local_rows()
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if (nr > 0) then
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res = x%prod(nr,y,trans_)
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! TODO adjust dot_local because overlapped elements are computed more than once
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if (size(desc_a%ovrlap_elem,1)>0) then
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if (x%v%is_dev()) call x%sync()
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do j=1,x%get_ncols()
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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res(j,:) = res(j,:) - (real(ndm-1)/real(ndm))*(x%v%v(idx,:)*y(idx,:))
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end do
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end do
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end if
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else
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res = dzero
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end if
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! TODO
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! compute global sum
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if (global_) call psb_sum(ctxt, res)
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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 function psb_dprod_multivect_a
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