MoochoPack_QuasiNormalStepStd_Step.cpp

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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 // Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
00005 //                  Copyright (2003) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #include <ostream>
00030 
00031 #include "MoochoPack_QuasiNormalStepStd_Step.hpp"
00032 #include "MoochoPack_moocho_algo_conversion.hpp"
00033 #include "IterationPack_print_algorithm_step.hpp"
00034 #include "AbstractLinAlgPack_VectorMutable.hpp"
00035 #include "AbstractLinAlgPack_VectorOut.hpp"
00036 #include "AbstractLinAlgPack_MatrixOpNonsing.hpp"
00037 #include "AbstractLinAlgPack_LinAlgOpPack.hpp"
00038 
00039 namespace MoochoPack {
00040 
00041 bool QuasiNormalStepStd_Step::do_step(
00042   Algorithm& _algo, poss_type step_poss, IterationPack::EDoStepType type
00043   ,poss_type assoc_step_poss
00044   )
00045 {
00046   using BLAS_Cpp::no_trans;
00047   using AbstractLinAlgPack::Vt_S;
00048   using AbstractLinAlgPack::V_InvMtV;
00049   using LinAlgOpPack::V_StV;
00050   using LinAlgOpPack::V_MtV;
00051 
00052   NLPAlgo         &algo        = rsqp_algo(_algo);
00053   NLPAlgoState        &s           = algo.rsqp_state();
00054   const Range1D    equ_decomp   = s.equ_decomp();
00055 
00056   EJournalOutputLevel olevel = algo.algo_cntr().journal_output_level();
00057   std::ostream& out = algo.track().journal_out();
00058 
00059   // print step header.
00060   if( static_cast<int>(olevel) >= static_cast<int>(PRINT_ALGORITHM_STEPS) ) {
00061     using IterationPack::print_algorithm_step;
00062     print_algorithm_step( algo, step_poss, type, assoc_step_poss, out );
00063   }
00064 
00065   // Get iteration quantities
00066   IterQuantityAccess<VectorMutable>
00067     &c_iq   = s.c(),
00068     &py_iq  = s.py(),
00069     &Ypy_iq = s.Ypy();
00070   IterQuantityAccess<MatrixOpNonsing>
00071     &R_iq = s.R();
00072   IterQuantityAccess<MatrixOp>
00073     &Y_iq = s.Y();
00074 
00075   // Solve the system py = - inv(R) * c(equ_decomp)
00076   VectorMutable &py_k = py_iq.set_k(0);
00077   V_InvMtV( &py_k, R_iq.get_k(0), no_trans, *c_iq.get_k(0).sub_view(equ_decomp) );
00078   Vt_S( &py_k, -1.0 );
00079 
00080   // Ypy = Y * py
00081   V_MtV( &Ypy_iq.set_k(0), Y_iq.get_k(0), no_trans, py_k );
00082 
00083   if( static_cast<int>(olevel) >= static_cast<int>(PRINT_ALGORITHM_STEPS) ) {
00084     out << "\n||py||   = " << py_iq.get_k(0).norm_inf() << std::endl
00085       << "\n||Ypy||2 = " << Ypy_iq.get_k(0).norm_2()  << std::endl;
00086   }
00087 
00088   if( static_cast<int>(olevel) >= static_cast<int>(PRINT_VECTORS) ) {
00089     out << "\npy_k =\n"  << py_iq.get_k(0);
00090     out << "\nYpy_k =\n" << Ypy_iq.get_k(0);
00091   }
00092 
00093   return true;
00094 }
00095 
00096 void QuasiNormalStepStd_Step::print_step(
00097   const Algorithm& algo, poss_type step_poss, IterationPack::EDoStepType type
00098   ,poss_type assoc_step_poss, std::ostream& out, const std::string& L
00099   ) const
00100 {
00101   out
00102     << L << "*** Calculate the range space step\n"
00103     << L << "py_k = - inv(R_k) * c_k(equ_decomp)\n"
00104     << L << "Ypy_k = Y_k * py_k\n";
00105 }
00106 
00107 } // end namespace MoochoPack

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