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113 lines
3.7 KiB
Fortran
113 lines
3.7 KiB
Fortran
!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.5)
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!
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! (C) Copyright 2020
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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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 AMG4PSBLAS 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 AMG4PSBLAS 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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subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout)
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use psb_base_mod
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use amg_d_onelev_mod, amg_protect_name => amg_d_base_onelev_descr
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Implicit None
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! Arguments
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class(amg_d_onelev_type), intent(in) :: lv
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integer(psb_ipk_), intent(in) :: il,nl,ilmin
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: iout
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! Local variables
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integer(psb_ipk_) :: err_act
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character(len=20), parameter :: name='amg_d_base_onelev_descr'
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integer(psb_ipk_) :: iout_
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logical :: coarse
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call psb_erractionsave(err_act)
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coarse = (il==nl)
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if (present(iout)) then
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iout_ = iout
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else
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iout_ = psb_out_unit
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end if
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write(iout_,*)
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if (il == ilmin) then
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call lv%parms%mlcycledsc(iout_,info)
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if (allocated(lv%aggr)) then
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call lv%aggr%descr(lv%parms,iout_,info)
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else
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write(iout_,*) 'Internal error: unallocated aggregator object'
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info = psb_err_internal_error_
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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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write(iout_,*)
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end if
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if (il > 1) then
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if (coarse) then
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write(iout_,*) ' Level ',il,' (coarse)'
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else
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write(iout_,*) ' Level ',il
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end if
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call lv%parms%descr(iout_,info,coarse=coarse)
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if (nl > 1) then
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if (allocated(lv%linmap%naggr)) then
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write(iout_,*) ' Coarse Matrix: Global size: ', &
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& sum((1_psb_lpk_*lv%linmap%naggr(:))),' Nonzeros: ',lv%ac_nz_tot
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write(iout_,*) ' Local matrix sizes: ', &
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& lv%linmap%naggr(:)
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write(iout_,*) ' Aggregation ratio: ', &
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& lv%szratio
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end if
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end if
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if (coarse.and.allocated(lv%sm)) &
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& call lv%sm%descr(info,iout=iout_,coarse=coarse)
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_base_onelev_descr
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