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123 lines
4.1 KiB
Fortran
123 lines
4.1 KiB
Fortran
1 year ago
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! Parallel Sparse BLAS GPU plugin
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! (C) Copyright 2013
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!
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! Salvatore Filippone
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! Alessandro Fanfarillo
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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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subroutine psi_d_convert_hll_from_coo(a,hksz,tmp,info)
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use psb_base_mod
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use psb_d_hll_mat_mod, psb_protect_name => psi_d_convert_hll_from_coo
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use psi_ext_util_mod
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implicit none
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class(psb_d_hll_sparse_mat), intent(inout) :: a
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class(psb_d_coo_sparse_mat), intent(in) :: tmp
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integer(psb_ipk_), intent(in) :: hksz
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integer(psb_ipk_), intent(out) :: info
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!locals
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Integer(Psb_ipk_) :: nza, nr, i,j,irw, idl,err_act, nc, isz,irs
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integer(psb_ipk_) :: nzm, ir, ic, k, hk, mxrwl, noffs, kc
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if (.not.tmp%is_by_rows()) then
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info = -98765
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return
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end if
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nr = tmp%get_nrows()
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nc = tmp%get_ncols()
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nza = tmp%get_nzeros()
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! If it is sorted then we can lessen memory impact
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a%psb_d_base_sparse_mat = tmp%psb_d_base_sparse_mat
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! First compute the number of nonzeros in each row.
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call psb_realloc(nr,a%irn,info)
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if (info /= 0) return
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a%irn = 0
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do i=1, nza
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a%irn(tmp%ia(i)) = a%irn(tmp%ia(i)) + 1
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end do
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a%nzt = nza
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! Second. Figure out the block offsets.
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call a%set_hksz(hksz)
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noffs = (nr+hksz-1)/hksz
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call psb_realloc(noffs+1,a%hkoffs,info)
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if (info /= 0) return
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a%hkoffs(1) = 0
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j=1
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do i=1,nr,hksz
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ir = min(hksz,nr-i+1)
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mxrwl = a%irn(i)
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do k=1,ir-1
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mxrwl = max(mxrwl,a%irn(i+k))
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end do
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a%hkoffs(j+1) = a%hkoffs(j) + mxrwl*hksz
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j = j + 1
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end do
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!
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! At this point a%hkoffs(noffs+1) contains the allocation
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! size a%ja a%val.
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!
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isz = a%hkoffs(noffs+1)
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call psb_realloc(nr,a%idiag,info)
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if (info == 0) call psb_realloc(isz,a%ja,info)
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if (info == 0) call psb_realloc(isz,a%val,info)
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if (info /= 0) return
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! Init last chunk of data
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nzm = a%hkoffs(noffs+1)-a%hkoffs(noffs)
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a%val(isz-(nzm-1):isz) = dzero
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a%ja(isz-(nzm-1):isz) = nr
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!
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! Now copy everything, noting the position of the diagonal.
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!
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kc = 1
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k = 1
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do i=1, nr,hksz
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ir = min(hksz,nr-i+1)
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irs = (i-1)/hksz
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hk = irs + 1
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isz = (a%hkoffs(hk+1)-a%hkoffs(hk))
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mxrwl = isz/hksz
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nza = sum(a%irn(i:i+ir-1))
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call psi_d_xtr_ell_from_coo(i,ir,mxrwl,tmp%ia(kc:kc+nza-1),&
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& tmp%ja(kc:kc+nza-1),tmp%val(kc:kc+nza-1),&
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& a%ja(k:k+isz-1),a%val(k:k+isz-1),a%irn(i:i+ir-1),&
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& a%idiag(i:i+ir-1),hksz)
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k = k + isz
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kc = kc + nza
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enddo
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! Third copy the other stuff
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if (info /= 0) return
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call a%set_sorted(.true.)
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end subroutine psi_d_convert_hll_from_coo
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