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245 lines
7.1 KiB
Fortran
245 lines
7.1 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 3.0
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!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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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_snumbmm.f90
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! Subroutine:
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! Arguments:
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!
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!
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! Note: This subroutine performs the numerical product of two sparse matrices.
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! It is modeled after the SMMP package by R. Bank and C. Douglas, but is
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! rewritten in Fortran 95/2003 making use of our sparse matrix facilities.
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!
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!
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subroutine psb_snumbmm(a,b,c)
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use psb_base_mod, psb_protect_name => psb_snumbmm
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implicit none
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type(psb_sspmat_type), intent(in) :: a,b
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type(psb_sspmat_type), intent(inout) :: c
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integer(psb_ipk_) :: info
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integer(psb_ipk_) :: err_act
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character(len=*), parameter :: name='psb_numbmm'
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call psb_erractionsave(err_act)
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info = psb_success_
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if ((a%is_null()) .or.(b%is_null()).or.(c%is_null())) then
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info = psb_err_invalid_mat_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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select type(aa=>c%a)
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type is (psb_s_csr_sparse_mat)
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call psb_numbmm(a%a,b%a,aa)
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class default
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info = psb_err_invalid_mat_state_
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call psb_errpush(info,name)
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goto 9999
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end select
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call c%set_asb()
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_snumbmm
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subroutine psb_sbase_numbmm(a,b,c)
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use psb_mat_mod
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use psb_string_mod
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use psb_serial_mod, psb_protect_name => psb_sbase_numbmm
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implicit none
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class(psb_s_base_sparse_mat), intent(in) :: a,b
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type(psb_s_csr_sparse_mat), intent(inout) :: c
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integer(psb_ipk_), allocatable :: itemp(:)
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integer(psb_ipk_) :: nze, ma,na,mb,nb
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character(len=20) :: name
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real(psb_spk_), allocatable :: temp(:)
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integer(psb_ipk_) :: info
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integer(psb_ipk_) :: err_act
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name='psb_numbmm'
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call psb_erractionsave(err_act)
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info = psb_success_
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ma = a%get_nrows()
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na = a%get_ncols()
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mb = b%get_nrows()
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nb = b%get_ncols()
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if ( mb /= na ) then
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write(psb_err_unit,*) 'Mismatch in SYMBMM: ',ma,na,mb,nb
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endif
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allocate(temp(max(ma,na,mb,nb)),stat=info)
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if (info /= psb_success_) then
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info = psb_err_alloc_dealloc_
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call psb_Errpush(info,name)
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goto 9999
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endif
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!
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! Note: we still have to test about possible performance hits.
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!
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!
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call psb_ensure_size(ione*size(c%ja),c%val,info)
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select type(a)
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type is (psb_s_csr_sparse_mat)
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select type(b)
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type is (psb_s_csr_sparse_mat)
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call csr_numbmm(a,b,c,temp,info)
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class default
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call gen_numbmm(a,b,c,temp,info)
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end select
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class default
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call gen_numbmm(a,b,c,temp,info)
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end select
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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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call c%set_asb()
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deallocate(temp)
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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contains
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subroutine csr_numbmm(a,b,c,temp,info)
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type(psb_s_csr_sparse_mat), intent(in) :: a,b
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type(psb_s_csr_sparse_mat), intent(inout) :: c
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real(psb_spk_) :: temp(:)
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: nze, ma,na,mb,nb
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info = psb_success_
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ma = a%get_nrows()
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na = a%get_ncols()
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mb = b%get_nrows()
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nb = b%get_ncols()
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call snumbmm(ma,na,nb,a%irp,a%ja,izero,a%val,&
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& b%irp,b%ja,izero,b%val,&
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& c%irp,c%ja,izero,c%val,temp)
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end subroutine csr_numbmm
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subroutine gen_numbmm(a,b,c,temp,info)
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class(psb_s_base_sparse_mat), intent(in) :: a,b
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type(psb_s_csr_sparse_mat), intent(inout) :: c
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integer(psb_ipk_) :: info
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real(psb_spk_) :: temp(:)
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integer(psb_ipk_), allocatable :: iarw(:), iacl(:),ibrw(:),ibcl(:)
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real(psb_spk_), allocatable :: aval(:),bval(:)
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integer(psb_ipk_) :: maxlmn,i,j,m,n,k,l,nazr,nbzr,jj,minlm,minmn,minln
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real(psb_spk_) :: ajj
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n = a%get_nrows()
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m = a%get_ncols()
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l = b%get_ncols()
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maxlmn = max(l,m,n)
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allocate(iarw(maxlmn),iacl(maxlmn),ibrw(maxlmn),ibcl(maxlmn),&
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& aval(maxlmn),bval(maxlmn), stat=info)
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if (info /= psb_success_) then
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info = psb_err_alloc_dealloc_
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return
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endif
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do i = 1,maxlmn
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temp(i) = szero
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end do
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minlm = min(l,m)
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minln = min(l,n)
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minmn = min(m,n)
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do i = 1,n
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call a%csget(i,i,nazr,iarw,iacl,aval,info)
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do jj=1, nazr
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j=iacl(jj)
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ajj = aval(jj)
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if ((j<1).or.(j>m)) then
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write(psb_err_unit,*) ' NUMBMM: Problem with A ',i,jj,j,m
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info = 1
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return
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endif
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call b%csget(j,j,nbzr,ibrw,ibcl,bval,info)
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do k=1,nbzr
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if ((ibcl(k)<1).or.(ibcl(k)>maxlmn)) then
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write(psb_err_unit,*) 'Problem in NUMBM 1:',j,k,ibcl(k),maxlmn
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info = psb_err_pivot_too_small_
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return
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else
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temp(ibcl(k)) = temp(ibcl(k)) + ajj * bval(k)
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endif
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enddo
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end do
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do j = c%irp(i),c%irp(i+1)-1
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if((c%ja(j)<1).or. (c%ja(j) > maxlmn)) then
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write(psb_err_unit,*) ' NUMBMM: output problem',i,j,c%ja(j),maxlmn
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info = psb_err_invalid_ovr_num_
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return
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else
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c%val(j) = temp(c%ja(j))
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temp(c%ja(j)) = szero
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endif
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end do
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end do
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end subroutine gen_numbmm
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end subroutine psb_sbase_numbmm
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