!!$ !!$ !!$ MLD2P4 version 2.0 !!$ MultiLevel Domain Decomposition Parallel Preconditioners Package !!$ based on PSBLAS (Parallel Sparse BLAS version 3.0) !!$ !!$ (C) Copyright 2008,2009,2010 !!$ !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ Pasqua D'Ambra ICAR-CNR, Naples !!$ Daniela di Serafino Second University of Naples !!$ !!$ 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. 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File: mld_s_base_smoother_mod.f90 ! ! Module: mld_s_base_smoother_mod ! ! This module defines: ! - the mld_s_base_smoother_type data structure containing the ! smoother and related data structures; ! ! It contains routines for ! - Building and applying; ! - checking if the smoother is correctly defined; ! - printing a description of the preconditioner; ! - deallocating the preconditioner data structure. ! module mld_s_base_smoother_mod use mld_s_base_solver_mod use psb_base_mod, only : psb_desc_type, psb_sspmat_type, psb_long_int_k_,& & psb_s_vect_type, psb_s_base_vect_type, psb_s_base_sparse_mat, psb_spk_ ! ! ! ! Type: mld_T_base_smoother_type. ! ! It holds the smoother a single level. Its only mandatory component is a solver ! object which holds a local solver; this decoupling allows to have the same solver ! e.g ILU to work with Jacobi with multiple sweeps as well as with any AS variant. ! ! type mld_T_base_smoother_type ! class(mld_T_base_solver_type), allocatable :: sv ! end type mld_T_base_smoother_type ! ! Methods: ! ! build - Compute the actual contents of the smoother; includes ! invocation of the build method on the solver component. ! free - Release memory ! apply - Apply the smoother to a vector (or to an array); includes ! invocation of the apply method on the solver component. ! descr - Prints a description of the object. ! default - Set default values ! dump - Dump to file object contents ! set - Sets various parameters; when a request is unknown ! it is passed to the solver object for further processing. ! check - Sanity checks. ! sizeof - Total memory occupation in bytes ! get_nzeros - Number of nonzeros ! ! ! type mld_s_base_smoother_type class(mld_s_base_solver_type), allocatable :: sv contains procedure, pass(sm) :: check => mld_s_base_smoother_check procedure, pass(sm) :: dump => mld_s_base_smoother_dmp procedure, pass(sm) :: build => mld_s_base_smoother_bld procedure, pass(sm) :: apply_v => mld_s_base_smoother_apply_vect procedure, pass(sm) :: apply_a => mld_s_base_smoother_apply generic, public :: apply => apply_a, apply_v procedure, pass(sm) :: free => mld_s_base_smoother_free procedure, pass(sm) :: seti => mld_s_base_smoother_seti procedure, pass(sm) :: setc => mld_s_base_smoother_setc procedure, pass(sm) :: setr => mld_s_base_smoother_setr generic, public :: set => seti, setc, setr procedure, pass(sm) :: default => s_base_smoother_default procedure, pass(sm) :: descr => mld_s_base_smoother_descr procedure, pass(sm) :: sizeof => s_base_smoother_sizeof procedure, pass(sm) :: get_nzeros => s_base_smoother_get_nzeros end type mld_s_base_smoother_type private :: s_base_smoother_sizeof, & & s_base_smoother_default, s_base_smoother_get_nzeros interface mld_s_base_smoother_apply subroutine mld_s_base_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type type(psb_desc_type), intent(in) :: desc_data class(mld_s_base_smoother_type), intent(in) :: sm real(psb_spk_),intent(inout) :: x(:) real(psb_spk_),intent(inout) :: y(:) real(psb_spk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans integer, intent(in) :: sweeps real(psb_spk_),target, intent(inout) :: work(:) integer, intent(out) :: info end subroutine mld_s_base_smoother_apply end interface mld_s_base_smoother_apply interface mld_s_base_smoother_apply_vect subroutine mld_s_base_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,& & trans,sweeps,work,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type type(psb_desc_type), intent(in) :: desc_data class(mld_s_base_smoother_type), intent(inout) :: sm type(psb_s_vect_type),intent(inout) :: x type(psb_s_vect_type),intent(inout) :: y real(psb_spk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans integer, intent(in) :: sweeps real(psb_spk_),target, intent(inout) :: work(:) integer, intent(out) :: info end subroutine mld_s_base_smoother_apply_vect end interface mld_s_base_smoother_apply_vect interface mld_s_base_smoother_check subroutine mld_s_base_smoother_check(sm,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments class(mld_s_base_smoother_type), intent(inout) :: sm integer, intent(out) :: info end subroutine mld_s_base_smoother_check end interface mld_s_base_smoother_check interface mld_s_base_smoother_seti subroutine mld_s_base_smoother_seti(sm,what,val,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments class(mld_s_base_smoother_type), intent(inout) :: sm integer, intent(in) :: what integer, intent(in) :: val integer, intent(out) :: info end subroutine mld_s_base_smoother_seti end interface mld_s_base_smoother_seti interface mld_s_base_smoother_setc subroutine mld_s_base_smoother_setc(sm,what,val,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type class(mld_s_base_smoother_type), intent(inout) :: sm integer, intent(in) :: what character(len=*), intent(in) :: val integer, intent(out) :: info end subroutine mld_s_base_smoother_setc end interface mld_s_base_smoother_setc interface mld_s_base_smoother_setr subroutine mld_s_base_smoother_setr(sm,what,val,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments class(mld_s_base_smoother_type), intent(inout) :: sm integer, intent(in) :: what real(psb_spk_), intent(in) :: val integer, intent(out) :: info end subroutine mld_s_base_smoother_setr end interface mld_s_base_smoother_setr interface mld_s_base_smoother_bld subroutine mld_s_base_smoother_bld(a,desc_a,sm,upd,info,amold,vmold) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments type(psb_sspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(in) :: desc_a class(mld_s_base_smoother_type), intent(inout) :: sm character, intent(in) :: upd integer, intent(out) :: info class(psb_s_base_sparse_mat), intent(in), optional :: amold class(psb_s_base_vect_type), intent(in), optional :: vmold end subroutine mld_s_base_smoother_bld end interface mld_s_base_smoother_bld interface mld_s_base_smoother_free subroutine mld_s_base_smoother_free(sm,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments class(mld_s_base_smoother_type), intent(inout) :: sm integer, intent(out) :: info end subroutine mld_s_base_smoother_free end interface mld_s_base_smoother_free interface mld_s_base_smoother_descr subroutine mld_s_base_smoother_descr(sm,info,iout,coarse) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type ! Arguments class(mld_s_base_smoother_type), intent(in) :: sm integer, intent(out) :: info integer, intent(in), optional :: iout logical, intent(in), optional :: coarse end subroutine mld_s_base_smoother_descr end interface mld_s_base_smoother_descr interface mld_s_base_smoother_dmp subroutine mld_s_base_smoother_dmp(sm,ictxt,level,info,prefix,head,smoother,solver) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, mld_s_base_smoother_type class(mld_s_base_smoother_type), intent(in) :: sm integer, intent(in) :: ictxt,level integer, intent(out) :: info character(len=*), intent(in), optional :: prefix, head logical, optional, intent(in) :: smoother, solver end subroutine mld_s_base_smoother_dmp end interface mld_s_base_smoother_dmp contains ! ! Function returning the size of the mld_prec_type data structure ! in bytes or in number of nonzeros of the operator(s) involved. ! function s_base_smoother_get_nzeros(sm) result(val) implicit none class(mld_s_base_smoother_type), intent(in) :: sm integer(psb_long_int_k_) :: val integer :: i val = 0 if (allocated(sm%sv)) & & val = sm%sv%get_nzeros() end function s_base_smoother_get_nzeros function s_base_smoother_sizeof(sm) result(val) implicit none ! Arguments class(mld_s_base_smoother_type), intent(in) :: sm integer(psb_long_int_k_) :: val integer :: i val = 0 if (allocated(sm%sv)) then val = sm%sv%sizeof() end if return end function s_base_smoother_sizeof ! ! Set sensible defaults. ! To be called immediately after allocation ! subroutine s_base_smoother_default(sm) implicit none ! Arguments class(mld_s_base_smoother_type), intent(inout) :: sm ! Do nothing for base version if (allocated(sm%sv)) call sm%sv%default() return end subroutine s_base_smoother_default end module mld_s_base_smoother_mod