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Runs through to coarse space solve

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This commit is contained in:
Peter Boyle 2020-06-29 12:59:52 -04:00
parent 936c5ecf69
commit ee9889821d
1 changed files with 25 additions and 6 deletions
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31
tests/solver/Test_hw_multigrid.cc
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@ -6,9 +6,7 @@
Copyright (C) 2015
Author: Antonin Portelli <antonin.portelli@me.com>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: paboyle <paboyle@ph.ed.ac.uk>
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
@ -267,7 +265,7 @@ int main (int argc, char ** argv)
// Construct a coarsened grid; utility for this?
///////////////////////////////////////////////////
std::vector<int> block ({2,2,2,2});
const int nbasis= 32;
const int nbasis= 8;
auto clatt = GridDefaultLatt();
for(int d=0;d<clatt.size();d++){
@ -315,7 +313,7 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage << "**************************************************"<< std::endl;
int nb=nbasis/2;
Gamma g5(Gamma::Algebra::Gamma5);
Aggregates4D.CreateSubspaceChebyshev(RNG5,SubspaceOp,nb,60.0,0.02,500,100,100,0.0);
Aggregates4D.CreateSubspaceChebyshev(RNG4,SubspaceOp,nb,60.0,0.02,500,100,100,0.0);
for(int n=0;n<nb;n++){
Aggregates4D.subspace[n+nb]= Aggregates4D.subspace[n] - g5 * Aggregates4D.subspace[n];
Aggregates4D.subspace[n] = Aggregates4D.subspace[n] + g5 * Aggregates4D.subspace[n];
@ -335,12 +333,33 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage << "**************************************************"<< std::endl;
typedef CoarsenedMatrix<vSpinColourVector,vTComplex,nbasis> Level1Op;
NonHermitianLinearOperator<DomainWallFermionR,LatticeFermion> LinOpDwf(Ddwf);
Level1Op LDOp (*Coarse5d,1);
Level1Op LDOp (*Coarse5d,0);
std::cout<<GridLogMessage << " Callinig Coarsen the operator " <<std::endl;
LDOp.CoarsenOperator(FGrid,LinOpDwf,Aggregates5D);
std::cout<<GridLogMessage << "**************************************************"<< std::endl;
std::cout<<GridLogMessage << "Coarse CG unprec "<< std::endl;
std::cout<<GridLogMessage << "**************************************************"<< std::endl;
CoarseVector c_src(Coarse5d); c_src=1.0;
CoarseVector c_res(Coarse5d);
LatticeFermion f_src(FGrid); f_src=1.0;
LatticeFermion f_res(FGrid);
RealD tol=1.0e-8;
int MaxIt = 10000;
MdagMLinearOperator<Level1Op,CoarseVector> CoarseMdagM(LDOp);
BiCGSTAB<CoarseVector> CoarseBiCGSTAB(tol,MaxIt);
ConjugateGradient<CoarseVector> CoarseCG(tol,MaxIt);
c_res=Zero();
CoarseCG(CoarseMdagM,c_src,c_res);
std::cout<<GridLogMessage << "**************************************************"<< std::endl;
std::cout<<GridLogMessage << " Solve " <<std::endl;
std::cout<<GridLogMessage << "**************************************************"<< std::endl;