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amg4psblas/amgprec/impl/level/amg_d_base_onelev_descr.f90

113 lines
3.7 KiB
Fortran

!
!
! AMG4PSBLAS version 1.0
! Algebraic Multigrid Package
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
!
! (C) Copyright 2020
!
! Salvatore Filippone
! Pasqua D'Ambra
! Fabio Durastante
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout)
use psb_base_mod
use amg_d_onelev_mod, amg_protect_name => amg_d_base_onelev_descr
Implicit None
! Arguments
class(amg_d_onelev_type), intent(in) :: lv
integer(psb_ipk_), intent(in) :: il,nl,ilmin
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
! Local variables
integer(psb_ipk_) :: err_act
character(len=20), parameter :: name='amg_d_base_onelev_descr'
integer(psb_ipk_) :: iout_
logical :: coarse
call psb_erractionsave(err_act)
coarse = (il==nl)
if (present(iout)) then
iout_ = iout
else
iout_ = psb_out_unit
end if
write(iout_,*)
if (il == ilmin) then
call lv%parms%mlcycledsc(iout_,info)
if (allocated(lv%aggr)) then
call lv%aggr%descr(lv%parms,iout_,info)
else
write(iout_,*) 'Internal error: unallocated aggregator object'
info = psb_err_internal_error_
call psb_errpush(info,name)
goto 9999
end if
write(iout_,*)
end if
if (il > 1) then
if (coarse) then
write(iout_,*) ' Level ',il,' (coarse)'
else
write(iout_,*) ' Level ',il
end if
call lv%parms%descr(iout_,info,coarse=coarse)
if (nl > 1) then
if (allocated(lv%linmap%naggr)) then
write(iout_,*) ' Coarse Matrix: Global size: ', &
& sum((1_psb_lpk_*lv%linmap%naggr(:))),' Nonzeros: ',lv%ac_nz_tot
write(iout_,*) ' Local matrix sizes: ', &
& lv%linmap%naggr(:)
write(iout_,*) ' Aggregation ratio: ', &
& lv%szratio
end if
end if
if (coarse.and.allocated(lv%sm)) &
& call lv%sm%descr(info,iout=iout_,coarse=coarse)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_d_base_onelev_descr