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Test cases for coarsening with non-local stencil

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This commit is contained in:
Peter Boyle 2023-09-07 10:53:22 -04:00
parent 993f43ef4a
commit b9dcad89e8
3 changed files with 263 additions and 21 deletions
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15
tests/debug/Test_general_coarse.cc
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@ -81,14 +81,11 @@ public:
}
void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
void HermOp(const Field &in, Field &out){
std::cout << "HermOp"<<std::endl;
Field tmp(in.Grid());
_Mat.M(in,tmp);
_PV.Mdag(tmp,out);
_PV.M(out,tmp);
_Mat.Mdag(tmp,out);
std::cout << "HermOp done "<<norm2(out)<<std::endl;
}
};
@ -106,7 +103,7 @@ public:
scalesft = Cshift(scaletmp,d+1,1);
scale = 100.0*scale + where( mod(x ,2)==(Integer)0, scalesft,scaletmp);
}
std::cout << " scale\n" << scale << std::endl;
// std::cout << " scale\n" << scale << std::endl;
}
// Support for coarsening to a multigrid
void OpDiag (const Field &in, Field &out) {};
@ -223,7 +220,7 @@ int main (int argc, char ** argv)
c_src = one; // 1 in every element for vector 1.
Coordinate coor(5,0);
std::cout << "c_src"<< c_src<< std::endl;
// std::cout << "c_src"<< c_src<< std::endl;
blockPromote(c_src,err,subspace);
prom=Zero();
@ -239,7 +236,7 @@ int main (int argc, char ** argv)
// blockPromote(c_src,prom,subspace);
// Diagonal.HermOp(prom,tmp);
HermDefOp.HermOp(prom,tmp);
HermDefOp.Op(prom,tmp);
// HermDefOp.Op(prom,tmp);
blockProject(c_proj,tmp,subspace);
std::cout<<GridLogMessage<<" Called Big Dirac Op "<<norm2(tmp)<<std::endl;
@ -248,12 +245,12 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage<<" Called Little Dirac Op c_src "<< norm2(c_src) << " c_res "<< norm2(c_res) <<std::endl;
std::cout<<GridLogMessage<<"Little dop : "<<norm2(c_res)<<std::endl;
std::cout<<GridLogMessage<<" Little "<< c_res<<std::endl;
// std::cout<<GridLogMessage<<" Little "<< c_res<<std::endl;
std::cout<<GridLogMessage<<"Big dop in subspace : "<<norm2(c_proj)<<std::endl;
std::cout<<GridLogMessage<<" Big "<< c_proj<<std::endl;
// std::cout<<GridLogMessage<<" Big "<< c_proj<<std::endl;
c_proj = c_proj - c_res;
std::cout<<GridLogMessage<<" ldop error: "<<norm2(c_proj)<<std::endl;
std::cout<<GridLogMessage<<" error "<< c_proj<<std::endl;
// std::cout<<GridLogMessage<<" error "<< c_proj<<std::endl;
std::cout<<GridLogMessage << "Testing Hermiticity stochastically "<< std::endl;
CoarseVector phi(Coarse5d);

203
tests/debug/Test_general_coarse_hdcg.cc Normal file
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@ -0,0 +1,203 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/Test_padded_cell.cc
Copyright (C) 2023
Author: Peter Boyle <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
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#include <Grid/Grid.h>
#include <Grid/lattice/PaddedCell.h>
#include <Grid/stencil/GeneralLocalStencil.h>
#include <Grid/algorithms/GeneralCoarsenedMatrix.h>
using namespace std;
using namespace Grid;
// Want Op in CoarsenOp to call MatPcDagMatPc
template<class Field>
class HermOpAdaptor : public LinearOperatorBase<Field>
{
LinearOperatorBase<Field> & wrapped;
public:
HermOpAdaptor(LinearOperatorBase<Field> &wrapme) : wrapped(wrapme) {};
void OpDiag (const Field &in, Field &out) { assert(0); }
void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); }
void OpDirAll (const Field &in, std::vector<Field> &out){ assert(0); };
void Op (const Field &in, Field &out){
wrapped.HermOp(in,out);
}
void AdjOp (const Field &in, Field &out){
wrapped.HermOp(in,out);
}
void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
void HermOp(const Field &in, Field &out){
wrapped.HermOp(in,out);
}
};
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
const int Ls=16;
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
// Construct a coarsened grid
// 4^4 cell
Coordinate clatt = GridDefaultLatt();
for(int d=0;d<clatt.size();d++){
clatt[d] = clatt[d]/4;
}
GridCartesian *Coarse4d = SpaceTimeGrid::makeFourDimGrid(clatt, GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());;
GridCartesian *Coarse5d = SpaceTimeGrid::makeFiveDimGrid(1,Coarse4d);
std::vector<int> seeds4({1,2,3,4});
std::vector<int> seeds5({5,6,7,8});
std::vector<int> cseeds({5,6,7,8});
GridParallelRNG RNG5(FGrid); RNG5.SeedFixedIntegers(seeds5);
GridParallelRNG RNG4(UGrid); RNG4.SeedFixedIntegers(seeds4);
GridParallelRNG CRNG(Coarse5d);CRNG.SeedFixedIntegers(cseeds);
LatticeGaugeField Umu(UGrid);
FieldMetaData header;
std::string file("ckpoint_lat.4000");
NerscIO::readConfiguration(Umu,header,file);
RealD mass=0.01;
RealD M5=1.8;
RealD b=1.5;
RealD c=0.5;
MobiusFermionD Ddwf(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,b,c);
MobiusFermionD Dpv(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,1.0,M5,b,c);
const int nbasis = 4;
const int cb = 0 ;
LatticeFermion prom(FrbGrid);
typedef GeneralCoarsenedMatrix<vSpinColourVector,vTComplex,nbasis> LittleDiracOperator;
typedef LittleDiracOperator::CoarseVector CoarseVector;
NextToNextToNextToNearestStencilGeometry5D geom;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<std::endl;
SchurDiagMooeeOperator<MobiusFermionD, LatticeFermion> HermOpEO(Ddwf);
HermOpAdaptor<LatticeFermionD> HOA(HermOpEO);
// Run power method on HOA??
LatticeFermion result(FrbGrid); result=Zero();
LatticeFermion ref(FrbGrid); ref=Zero();
LatticeFermion tmp(FrbGrid);
LatticeFermion err(FrbGrid);
{
LatticeFermion src(FrbGrid); random(RNG5,src);
PowerMethod<LatticeFermion> PM; PM(HermOpEO,src);
}
// exit(0);
// Warning: This routine calls PVdagM.Op, not PVdagM.HermOp
typedef Aggregation<vSpinColourVector,vTComplex,nbasis> Subspace;
Subspace Aggregates(Coarse5d,FrbGrid,cb);
Aggregates.CreateSubspaceChebyshev(RNG5,
HermOpEO,
nbasis,
90.0,
0.1,
500,
500,
100,
0.0);
////////////////////////////////////////////////////////////
// Need to check about red-black grid coarsening
////////////////////////////////////////////////////////////
LittleDiracOperator LittleDiracOp(geom,FrbGrid,Coarse5d);
LittleDiracOp.CoarsenOperator(HOA,Aggregates);
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"Testing coarsened operator "<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
CoarseVector c_src (Coarse5d);
CoarseVector c_res (Coarse5d);
CoarseVector c_proj(Coarse5d);
std::vector<LatticeFermion> subspace(nbasis,FrbGrid);
subspace=Aggregates.subspace;
Complex one(1.0);
c_src = one; // 1 in every element for vector 1.
blockPromote(c_src,err,subspace);
prom=Zero();
for(int b=0;b<nbasis;b++){
prom=prom+subspace[b];
}
err=err-prom;
std::cout<<GridLogMessage<<"Promoted back from subspace: err "<<norm2(err)<<std::endl;
std::cout<<GridLogMessage<<"c_src "<<norm2(c_src)<<std::endl;
std::cout<<GridLogMessage<<"prom "<<norm2(prom)<<std::endl;
HermOpEO.HermOp(prom,tmp);
blockProject(c_proj,tmp,subspace);
std::cout<<GridLogMessage<<" Called Big Dirac Op "<<norm2(tmp)<<std::endl;
LittleDiracOp.M(c_src,c_res);
std::cout<<GridLogMessage<<" Called Little Dirac Op c_src "<< norm2(c_src) << " c_res "<< norm2(c_res) <<std::endl;
std::cout<<GridLogMessage<<"Little dop : "<<norm2(c_res)<<std::endl;
std::cout<<GridLogMessage<<"Big dop in subspace : "<<norm2(c_proj)<<std::endl;
c_proj = c_proj - c_res;
std::cout<<GridLogMessage<<" ldop error: "<<norm2(c_proj)<<std::endl;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage << "Done "<< std::endl;
// Build a coarse space solver
random(CRNG,c_src);
c_res=Zero();
// ZeroGuesser<CoarseVector> Guess;
RealD tol = 1.0e-8;
int maxit=2000;
ConjugateGradient<CoarseVector> CG(tol,maxit,false);
HermitianLinearOperator<LittleDiracOperator,CoarseVector> Hop (LittleDiracOp);
CG(Hop, c_src, c_res);
Grid_finalize();
return 0;
}

50
tests/debug/Test_general_coarse_pvdagm.cc
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@ -1,4 +1,4 @@
/*************************************************************************************
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
@ -141,7 +141,7 @@ int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
const int Ls=16;
const int Ls=2;
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
@ -152,7 +152,7 @@ int main (int argc, char ** argv)
// Construct a coarsened grid
Coordinate clatt = GridDefaultLatt();
for(int d=0;d<clatt.size();d++){
clatt[d] = clatt[d]/2;
clatt[d] = clatt[d]/4;
}
GridCartesian *Coarse4d = SpaceTimeGrid::makeFourDimGrid(clatt, GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());;
GridCartesian *Coarse5d = SpaceTimeGrid::makeFiveDimGrid(1,Coarse4d);
@ -174,6 +174,7 @@ int main (int argc, char ** argv)
FieldMetaData header;
std::string file("ckpoint_lat.4000");
NerscIO::readConfiguration(Umu,header,file);
//Umu = 1.0;
RealD mass=0.5;
RealD M5=1.8;
@ -181,7 +182,7 @@ int main (int argc, char ** argv)
DomainWallFermionD Ddwf(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
DomainWallFermionD Dpv(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,1.0,M5);
const int nbasis = 20;
const int nbasis = 1;
const int cb = 0 ;
LatticeFermion prom(FGrid);
@ -216,6 +217,47 @@ int main (int argc, char ** argv)
LittleDiracOperator LittleDiracOpPV(geom,FGrid,Coarse5d);
LittleDiracOpPV.CoarsenOperator(PVdagM,AggregatesPD);
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"Testing coarsened operator "<<std::endl;
CoarseVector c_src (Coarse5d);
CoarseVector c_res (Coarse5d);
CoarseVector c_proj(Coarse5d);
std::vector<LatticeFermion> subspace(nbasis,FGrid);
subspace=AggregatesPD.subspace;
Complex one(1.0);
c_src = one; // 1 in every element for vector 1.
blockPromote(c_src,err,subspace);
prom=Zero();
for(int b=0;b<nbasis;b++){
prom=prom+subspace[b];
}
err=err-prom;
std::cout<<GridLogMessage<<"Promoted back from subspace: err "<<norm2(err)<<std::endl;
std::cout<<GridLogMessage<<"c_src "<<norm2(c_src)<<std::endl;
std::cout<<GridLogMessage<<"prom "<<norm2(prom)<<std::endl;
PVdagM.Op(prom,tmp);
blockProject(c_proj,tmp,subspace);
std::cout<<GridLogMessage<<" Called Big Dirac Op "<<norm2(tmp)<<std::endl;
LittleDiracOpPV.M(c_src,c_res);
std::cout<<GridLogMessage<<" Called Little Dirac Op c_src "<< norm2(c_src) << " c_res "<< norm2(c_res) <<std::endl;
std::cout<<GridLogMessage<<"Little dop : "<<norm2(c_res)<<std::endl;
// std::cout<<GridLogMessage<<" Little "<< c_res<<std::endl;
std::cout<<GridLogMessage<<"Big dop in subspace : "<<norm2(c_proj)<<std::endl;
// std::cout<<GridLogMessage<<" Big "<< c_proj<<std::endl;
c_proj = c_proj - c_res;
std::cout<<GridLogMessage<<" ldop error: "<<norm2(c_proj)<<std::endl;
// std::cout<<GridLogMessage<<" error "<< c_proj<<std::endl;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<std::endl;