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128 lines
4.6 KiB
Fortran
128 lines
4.6 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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! Daniela di Serafino
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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_c_jac_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
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use psb_base_mod
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use amg_c_diag_solver
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use amg_c_jac_smoother, amg_protect_name => amg_c_jac_smoother_bld
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Implicit None
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! Arguments
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type(psb_cspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(inout) :: desc_a
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class(amg_c_jac_smoother_type), intent(inout) :: sm
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integer(psb_ipk_), intent(out) :: info
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class(psb_c_base_sparse_mat), intent(in), optional :: amold
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class(psb_c_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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! Local variables
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type(psb_cspmat_type) :: tmpa
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integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota, nzeros
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integer(psb_ipk_) :: ictxt,np,me,i, err_act, debug_unit, debug_level
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character(len=20) :: name='c_jac_smoother_bld', ch_err
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info=psb_success_
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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ictxt = desc_a%get_context()
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call psb_info(ictxt, me, np)
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),' start'
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n_row = desc_a%get_local_rows()
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n_col = desc_a%get_local_cols()
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nrow_a = a%get_nrows()
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nztota = a%get_nzeros()
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if( sm%checkres ) sm%pa => a
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select type (smsv => sm%sv)
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class is (amg_c_diag_solver_type)
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call sm%nd%free()
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sm%pa => a
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sm%nd_nnz_tot = nztota
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call psb_sum(ictxt,sm%nd_nnz_tot)
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call sm%sv%build(a,desc_a,info,amold=amold,vmold=vmold)
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class default
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if (smsv%is_global()) then
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! Do not put anything into SM%ND since the solver
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! is acting globally.
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call sm%nd%free()
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sm%nd_nnz_tot = 0
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call psb_sum(ictxt,sm%nd_nnz_tot)
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call sm%sv%build(a,desc_a,info,amold=amold,vmold=vmold)
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else
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call a%csclip(sm%nd,info,&
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& jmin=nrow_a+1,rscale=.false.,cscale=.false.)
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if (info == psb_success_) then
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if (present(amold)) then
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call sm%nd%cscnv(info,&
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& mold=amold,dupl=psb_dupl_add_)
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else
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call sm%nd%cscnv(info,&
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& type='csr',dupl=psb_dupl_add_)
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endif
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end if
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sm%nd_nnz_tot = sm%nd%get_nzeros()
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call psb_sum(ictxt,sm%nd_nnz_tot)
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call a%csclip(tmpa,info,&
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& jmax=nrow_a,rscale=.false.,cscale=.false.)
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call sm%sv%build(tmpa,desc_a,info,amold=amold,vmold=vmold)
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end if
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end select
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,&
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& a_err='clip & psb_spcnv csr 4')
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goto 9999
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end if
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),' end'
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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_c_jac_smoother_bld
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