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498 lines
15 KiB
Fortran
498 lines
15 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4 version 2.0
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
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!!$
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!!$ (C) Copyright 2008,2009,2010
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!!$
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$ Pasqua D'Ambra ICAR-CNR, Naples
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!!$ Daniela di Serafino Second University of Naples
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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 MLD2P4 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 MLD2P4 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: mld_z_base_solver_mod.f90
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!
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! Module: mld_z_base_solver_mod
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!
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! This module defines:
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! - the mld_z_base_solver_type data structure containing the
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! basic solver type acting on a subdomain
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!
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! It contains routines for
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! - Building and applying;
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! - checking if the solver is correctly defined;
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! - printing a description of the solver;
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! - deallocating the data structure.
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!
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module mld_z_base_solver_mod
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use mld_base_prec_type
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use psb_base_mod, only : psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type
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!
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!
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! Type: mld_T_base_solver_type.
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!
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! It holds the local solver; it has no mandatory components.
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!
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! type mld_T_base_solver_type
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! end type mld_T_base_solver_type
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!
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! build - Compute the actual contents of the smoother; includes
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! invocation of the build method on the solver component.
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! free - Release memory
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! apply - Apply the smoother to a vector (or to an array); includes
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! invocation of the apply method on the solver component.
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! descr - Prints a description of the object.
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! default - Set default values
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! dump - Dump to file object contents
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! set - Sets various parameters; when a request is unknown
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! it is passed to the smoother object for further processing.
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! check - Sanity checks.
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! sizeof - Total memory occupation in bytes
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! get_nzeros - Number of nonzeros
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!
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!
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!
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type mld_z_base_solver_type
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contains
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procedure, pass(sv) :: check => z_base_solver_check
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procedure, pass(sv) :: dump => z_base_solver_dmp
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procedure, pass(sv) :: build => z_base_solver_bld
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procedure, pass(sv) :: apply_v => z_base_solver_apply_vect
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procedure, pass(sv) :: apply_a => z_base_solver_apply
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generic, public :: apply => apply_a, apply_v
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procedure, pass(sv) :: free => z_base_solver_free
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procedure, pass(sv) :: seti => z_base_solver_seti
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procedure, pass(sv) :: setc => z_base_solver_setc
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procedure, pass(sv) :: setr => z_base_solver_setr
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generic, public :: set => seti, setc, setr
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procedure, pass(sv) :: default => z_base_solver_default
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procedure, pass(sv) :: descr => z_base_solver_descr
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procedure, pass(sv) :: sizeof => z_base_solver_sizeof
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procedure, pass(sv) :: get_nzeros => z_base_solver_get_nzeros
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end type mld_z_base_solver_type
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private :: z_base_solver_bld, z_base_solver_apply, &
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& z_base_solver_free, z_base_solver_seti, &
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& z_base_solver_setc, z_base_solver_setr, &
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& z_base_solver_descr, z_base_solver_sizeof, &
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& z_base_solver_default, z_base_solver_check,&
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& z_base_solver_dmp, z_base_solver_apply_vect, &
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& z_base_solver_get_nzeros
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contains
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!
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! Function returning the size of the data structure
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! in bytes or in number of nonzeros of the operator(s) involved.
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!
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function z_base_solver_sizeof(sv) result(val)
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implicit none
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! Arguments
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class(mld_z_base_solver_type), intent(in) :: sv
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integer(psb_long_int_k_) :: val
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integer :: i
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val = 0
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return
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end function z_base_solver_sizeof
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function z_base_solver_get_nzeros(sv) result(val)
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implicit none
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class(mld_z_base_solver_type), intent(in) :: sv
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integer(psb_long_int_k_) :: val
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integer :: i
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val = 0
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end function z_base_solver_get_nzeros
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!
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! Apply: comes in two versions, on plain arrays or on encapsulated
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! vectors.
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! The base version throws an error, since it means that no explicit
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! choice was made.
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! Question: would it make sense to transform the base version into
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! the ID version, i.e. "base_solver" is the identity operator?
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!
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subroutine z_base_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info)
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use psb_base_mod
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_z_base_solver_type), intent(in) :: sv
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complex(psb_dpk_),intent(inout) :: x(:)
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complex(psb_dpk_),intent(inout) :: y(:)
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complex(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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complex(psb_dpk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_apply'
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call psb_erractionsave(err_act)
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info = psb_err_missing_override_method_
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call psb_errpush(info,name)
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goto 9999
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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 z_base_solver_apply
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subroutine z_base_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,work,info)
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use psb_base_mod
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_z_base_solver_type), intent(inout) :: sv
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type(psb_z_vect_type),intent(inout) :: x
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type(psb_z_vect_type),intent(inout) :: y
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complex(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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complex(psb_dpk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_apply'
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call psb_erractionsave(err_act)
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info = psb_err_missing_override_method_
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call psb_errpush(info,name)
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goto 9999
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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 z_base_solver_apply_vect
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!
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! Build
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! The base version throws an error, since it means that no explicit
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! choice was made.
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!
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subroutine z_base_solver_bld(a,desc_a,sv,upd,info,b,amold,vmold)
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use psb_base_mod
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Implicit None
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! Arguments
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type(psb_zspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_z_base_solver_type), intent(inout) :: sv
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character, intent(in) :: upd
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integer, intent(out) :: info
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type(psb_zspmat_type), intent(in), target, optional :: b
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class(psb_z_base_sparse_mat), intent(in), optional :: amold
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class(psb_z_base_vect_type), intent(in), optional :: vmold
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Integer :: err_act
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character(len=20) :: name='d_base_solver_bld'
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call psb_erractionsave(err_act)
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info = psb_err_missing_override_method_
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call psb_errpush(info,name)
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goto 9999
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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 z_base_solver_bld
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subroutine z_base_solver_check(sv,info)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_check'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (info /= psb_success_) goto 9999
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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 z_base_solver_check
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!
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! Set.
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! The base version does nothing; the principle is that
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! SET acts on what is known, and delegates what is unknown.
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! Since we are at the bottom of the hierarchy, there's no one
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! to delegate, so we do nothing.
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!
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subroutine z_base_solver_seti(sv,what,val,info)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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integer, intent(in) :: what
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integer, intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_seti'
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! Correct action here is doing nothing.
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info = 0
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return
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end subroutine z_base_solver_seti
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subroutine z_base_solver_setc(sv,what,val,info)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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integer, intent(in) :: what
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character(len=*), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act, ival
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character(len=20) :: name='d_base_solver_setc'
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call psb_erractionsave(err_act)
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info = psb_success_
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call mld_stringval(val,ival,info)
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if (info == psb_success_) call sv%set(what,ival,info)
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if (info /= psb_success_) goto 9999
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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 z_base_solver_setc
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subroutine z_base_solver_setr(sv,what,val,info)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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integer, intent(in) :: what
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real(psb_dpk_), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_setr'
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! Correct action here is doing nothing.
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info = 0
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return
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end subroutine z_base_solver_setr
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!
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! Free
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! The base version throws an error, since it means that no explicit
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! choice was made. IS THIS CORRECT? I suspect it would be better
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! to be silent here, to cover reallocation.
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!
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subroutine z_base_solver_free(sv,info)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_base_solver_free'
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call psb_erractionsave(err_act)
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info = psb_err_missing_override_method_
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call psb_errpush(info,name)
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goto 9999
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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 z_base_solver_free
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subroutine z_base_solver_descr(sv,info,iout,coarse)
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use psb_base_mod
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Implicit None
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! Arguments
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class(mld_z_base_solver_type), intent(in) :: sv
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integer, intent(out) :: info
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integer, intent(in), optional :: iout
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logical, intent(in), optional :: coarse
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! Local variables
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integer :: err_act
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integer :: ictxt, me, np
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character(len=20), parameter :: name='mld_z_base_solver_descr'
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integer :: iout_
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call psb_erractionsave(err_act)
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info = psb_err_missing_override_method_
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call psb_errpush(info,name)
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goto 9999
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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 z_base_solver_descr
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!
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! Dump. For debugging purposes.
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!
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subroutine z_base_solver_dmp(sv,ictxt,level,info,prefix,head,solver)
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use psb_base_mod
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implicit none
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class(mld_z_base_solver_type), intent(in) :: sv
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integer, intent(in) :: ictxt,level
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integer, intent(out) :: info
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character(len=*), intent(in), optional :: prefix, head
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logical, optional, intent(in) :: solver
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integer :: i, j, il1, iln, lname, lev
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integer :: icontxt,iam, np
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character(len=80) :: prefix_
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character(len=120) :: fname ! len should be at least 20 more than
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logical :: solver_
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! len of prefix_
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info = 0
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if (present(prefix)) then
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prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
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else
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prefix_ = "dump_slv_d"
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end if
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call psb_info(ictxt,iam,np)
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if (present(solver)) then
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solver_ = solver
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else
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solver_ = .false.
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end if
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lname = len_trim(prefix_)
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fname = trim(prefix_)
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write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
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lname = lname + 5
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! At base level do nothing for the solver
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end subroutine z_base_solver_dmp
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subroutine z_base_solver_default(sv)
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implicit none
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! Arguments
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class(mld_z_base_solver_type), intent(inout) :: sv
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! Do nothing for base version
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return
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end subroutine z_base_solver_default
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end module mld_z_base_solver_mod
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