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action_axpby.hh
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Sat, Feb 22, 18:36

action_axpby.hh
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//=====================================================
// File : action_axpby.hh
// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
//=====================================================
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#ifndef ACTION_AXPBY
#define ACTION_AXPBY
#include "utilities.h"
#include "STL_interface.hh"
#include <string>
#include "init/init_function.hh"
#include "init/init_vector.hh"
#include "init/init_matrix.hh"
using namespace std;
template<class Interface>
class Action_axpby {
public :
// Ctor
Action_axpby( int size ):_alpha(0.5),_beta(0.95),_size(size)
{
MESSAGE("Action_axpby Ctor");
// STL vector initialization
init_vector<pseudo_random>(X_stl,_size);
init_vector<pseudo_random>(Y_stl,_size);
init_vector<null_function>(resu_stl,_size);
// generic matrix and vector initialization
Interface::vector_from_stl(X_ref,X_stl);
Interface::vector_from_stl(Y_ref,Y_stl);
Interface::vector_from_stl(X,X_stl);
Interface::vector_from_stl(Y,Y_stl);
}
// invalidate copy ctor
Action_axpby( const Action_axpby & )
{
INFOS("illegal call to Action_axpby Copy Ctor");
exit(1);
}
// Dtor
~Action_axpby( void ){
MESSAGE("Action_axpby Dtor");
// deallocation
Interface::free_vector(X_ref);
Interface::free_vector(Y_ref);
Interface::free_vector(X);
Interface::free_vector(Y);
}
// action name
static inline std::string name( void )
{
return "axpby_"+Interface::name();
}
double nb_op_base( void ){
return 3.0*_size;
}
inline void initialize( void ){
Interface::copy_vector(X_ref,X,_size);
Interface::copy_vector(Y_ref,Y,_size);
}
inline void calculate( void ) {
BTL_ASM_COMMENT("mybegin axpby");
Interface::axpby(_alpha,X,_beta,Y,_size);
BTL_ASM_COMMENT("myend axpby");
}
void check_result( void ){
if (_size>128) return;
// calculation check
Interface::vector_to_stl(Y,resu_stl);
STL_interface<typename Interface::real_type>::axpby(_alpha,X_stl,_beta,Y_stl,_size);
typename Interface::real_type error=
STL_interface<typename Interface::real_type>::norm_diff(Y_stl,resu_stl);
if (error>1.e-6){
INFOS("WRONG CALCULATION...residual=" << error);
exit(2);
}
}
private :
typename Interface::stl_vector X_stl;
typename Interface::stl_vector Y_stl;
typename Interface::stl_vector resu_stl;
typename Interface::gene_vector X_ref;
typename Interface::gene_vector Y_ref;
typename Interface::gene_vector X;
typename Interface::gene_vector Y;
typename Interface::real_type _alpha;
typename Interface::real_type _beta;
int _size;
};
#endif

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