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Hw multigrid operator

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This commit is contained in:
Peter Boyle 2020-06-30 16:10:16 -04:00
parent da0ffa7a79
commit e3f056dfbb
1 changed files with 86 additions and 100 deletions
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176
tests/solver/Test_hw_multigrid.cc
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@ -38,7 +38,7 @@ using namespace Grid;
// Coarse Grid axpby_ssp_pminus // Inherit from spProj5pm // Coarse Grid axpby_ssp_pminus // Inherit from spProj5pm
// Coarse Grid axpby_ssp_pplus // Coarse Grid axpby_ssp_pplus
template<class Field> template<class Field,class Coeff_t>
class CayleyBase class CayleyBase
{ {
public: public:
@ -285,25 +285,83 @@ public:
M5Ddag(psi,psi,Din,lower,diag,upper); M5Ddag(psi,psi,Din,lower,diag,upper);
} }
virtual void M5D(const Field &psi_i, void M5D(const Field &psi_i,
const Field &phi_i, const Field &phi_i,
Field &chi_i, Field &chi_i,
Vector<Coeff_t> &lower, Vector<Coeff_t> &lower,
Vector<Coeff_t> &diag, Vector<Coeff_t> &diag,
Vector<Coeff_t> &upper); Vector<Coeff_t> &upper)
virtual void M5Ddag(const Field &psi_i, {
const Field &phi_i,
Field &chi_i,
Vector<Coeff_t> &lower,
Vector<Coeff_t> &diag,
Vector<Coeff_t> &upper);
chi_i.Checkerboard()=psi_i.Checkerboard();
GridBase *grid=psi_i.Grid();
autoView(psi , psi_i,AcceleratorRead);
autoView(phi , phi_i,AcceleratorRead);
autoView(chi , chi_i,AcceleratorWrite);
assert(phi.Checkerboard() == psi.Checkerboard());
auto pdiag = &diag[0];
auto pupper = &upper[0];
auto plower = &lower[0];
int Ls =this->Ls;
// 10 = 3 complex mult + 2 complex add
// Flops = 10.0*(Nc*Ns) *Ls*vol (/2 for red black counting)
uint64_t nloop = grid->oSites()/Ls;
accelerator_for(sss,nloop,Simd::Nsimd(),{
uint64_t ss= sss*Ls;
typedef decltype(coalescedRead(psi[0])) spinor;
spinor tmp1, tmp2;
for(int s=0;s<Ls;s++){
uint64_t idx_u = ss+((s+1)%Ls);
uint64_t idx_l = ss+((s+Ls-1)%Ls);
spProj5m(tmp1,psi(idx_u)); // Need routines for this
spProj5p(tmp2,psi(idx_l));
coalescedWrite(chi[ss+s],pdiag[s]*phi(ss+s)+pupper[s]*tmp1+plower[s]*tmp2);
}
});
}
void M5Ddag(const Field &psi_i,
const Field &phi_i,
Field &chi_i,
Vector<Coeff_t> &lower,
Vector<Coeff_t> &diag,
Vector<Coeff_t> &upper)
{
chi_i.Checkerboard()=psi_i.Checkerboard();
GridBase *grid=psi_i.Grid();
autoView(psi , psi_i,AcceleratorRead);
autoView(phi , phi_i,AcceleratorRead);
autoView(chi , chi_i,AcceleratorWrite);
assert(phi.Checkerboard() == psi.Checkerboard());
auto pdiag = &diag[0];
auto pupper = &upper[0];
auto plower = &lower[0];
int Ls=this->Ls;
uint64_t nloop = grid->oSites()/Ls;
accelerator_for(sss,nloop,Simd::Nsimd(),{
uint64_t ss=sss*Ls;
typedef decltype(coalescedRead(psi[0])) spinor;
spinor tmp1,tmp2;
for(int s=0;s<Ls;s++){
uint64_t idx_u = ss+((s+1)%Ls);
uint64_t idx_l = ss+((s+Ls-1)%Ls);
spProj5p(tmp1,psi(idx_u));
spProj5m(tmp2,psi(idx_l));
coalescedWrite(chi[ss+s],pdiag[s]*phi(ss+s)+pupper[s]*tmp1+plower[s]*tmp2);
}
});
}
}; };
template<class Fobj,class CComplex,int nbasis> template<class Fobj,class CComplex,int nbasis>
class CoarseCayleyFermion class CoarseCayleyFermion : public
: public CayleyBase< Lattice<siteVector> >, CayleyBase< Lattice<iVector<CComplex,nbasis > > , ComplexD >,
public SparseMatrixBase<Lattice<iVector<CComplex,nbasis > > > SparseMatrixBase<Lattice<iVector<CComplex,nbasis > > >
{ {
public: public:
typedef iVector<CComplex,nbasis > siteVector; typedef iVector<CComplex,nbasis > siteVector;
@ -324,19 +382,18 @@ public:
GridBase * Grid(void) { return Coarse5D; }; // this is all the linalg routines need to know GridBase * Grid(void) { return Coarse5D; }; // this is all the linalg routines need to know
CoarseCayleyFermion(GridCartesian &CoarseGrid4, CoarseCayleyFermion(GridCartesian &CoarseGrid4,
GridCartesian &CoarseGrid5 GridCartesian &CoarseGrid5,
CoarsenedMatrix<Fobj,CComplex,nbasis> &_Dw ): CoarsenedMatrix<Fobj,CComplex,nbasis> &_Dw ):
Coarse4D(&CoarseGrid4), Coarse4D(&CoarseGrid4),
Coarse5D(&CoarseGrid5), Coarse5D(&CoarseGrid5),
Dw(_Dw), Dw(_Dw),
geom(CoarseGrid4._ndimension), geom(CoarseGrid4._ndimension),
Stencil( &CoarseGrid4,geom.npoint,Even,geom.directions,geom.displacements,0), Stencil( &CoarseGrid4,geom.npoint,Even,geom.directions,geom.displacements,0)
A(2*Nd+1,&CoarseGrid4)
{ {
Ls=Coarse5D->_fdimensions[0]; this->Ls=Coarse5D->_fdimensions[0];
RealD eps = 1.0; RealD eps = 1.0;
Approx::zolotarev_data *zdata = Approx::higham(eps,Ls);// eps is ignored for higham Approx::zolotarev_data *zdata = Approx::higham(eps,this->Ls);// eps is ignored for higham
SetCoefficientsTanh(zdata,1.0,0.0); this->SetCoefficientsTanh(zdata,1.0,0.0);
Approx::zolotarev_free(zdata); Approx::zolotarev_free(zdata);
}; };
@ -370,7 +427,7 @@ public:
// Ls loop for2D // Ls loop for2D
int Ls=this->Ls; int Ls=this->Ls;
accelerator_for2d(sF, oSites*Ls, b, nbasis, Nsimd, { accelerator_for2d(sF, osites*Ls, b, nbasis, Nsimd, {
int sU = sF/Ls; int sU = sF/Ls;
int s = sF%Ls; int s = sF%Ls;
@ -409,79 +466,6 @@ public:
G5C(out, out); G5C(out, out);
}; };
void M5D(const FermionField &psi_i,
const FermionField &phi_i,
FermionField &chi_i,
Vector<Coeff_t> &lower,
Vector<Coeff_t> &diag,
Vector<Coeff_t> &upper)
{
chi_i.Checkerboard()=psi_i.Checkerboard();
GridBase *grid=psi_i.Grid();
autoView(psi , psi_i,AcceleratorRead);
autoView(phi , phi_i,AcceleratorRead);
autoView(chi , chi_i,AcceleratorWrite);
assert(phi.Checkerboard() == psi.Checkerboard());
auto pdiag = &diag[0];
auto pupper = &upper[0];
auto plower = &lower[0];
int Ls =this->Ls;
// 10 = 3 complex mult + 2 complex add
// Flops = 10.0*(Nc*Ns) *Ls*vol (/2 for red black counting)
uint64_t nloop = grid->oSites()/Ls;
accelerator_for(sss,nloop,Simd::Nsimd(),{
uint64_t ss= sss*Ls;
typedef decltype(coalescedRead(psi[0])) spinor;
spinor tmp1, tmp2;
for(int s=0;s<Ls;s++){
uint64_t idx_u = ss+((s+1)%Ls);
uint64_t idx_l = ss+((s+Ls-1)%Ls);
spProj5m(tmp1,psi(idx_u)); // Need routines for this
spProj5p(tmp2,psi(idx_l));
coalescedWrite(chi[ss+s],pdiag[s]*phi(ss+s)+pupper[s]*tmp1+plower[s]*tmp2);
}
});
}
void M5Ddag(const FermionField &psi_i,
const FermionField &phi_i,
FermionField &chi_i,
Vector<Coeff_t> &lower,
Vector<Coeff_t> &diag,
Vector<Coeff_t> &upper)
{
chi_i.Checkerboard()=psi_i.Checkerboard();
GridBase *grid=psi_i.Grid();
autoView(psi , psi_i,AcceleratorRead);
autoView(phi , phi_i,AcceleratorRead);
autoView(chi , chi_i,AcceleratorWrite);
assert(phi.Checkerboard() == psi.Checkerboard());
auto pdiag = &diag[0];
auto pupper = &upper[0];
auto plower = &lower[0];
int Ls=this->Ls;
uint64_t nloop = grid->oSites()/Ls;
accelerator_for(sss,nloop,Simd::Nsimd(),{
uint64_t ss=sss*Ls;
typedef decltype(coalescedRead(psi[0])) spinor;
spinor tmp1,tmp2;
for(int s=0;s<Ls;s++){
uint64_t idx_u = ss+((s+1)%Ls);
uint64_t idx_l = ss+((s+Ls-1)%Ls);
spProj5p(tmp1,psi(idx_u));
spProj5m(tmp2,psi(idx_l));
coalescedWrite(chi[ss+s],pdiag[s]*phi(ss+s)+pupper[s]*tmp1+plower[s]*tmp2);
}
});
}
}; };
template<class Field> class SolverWrapper : public LinearFunction<Field> { template<class Field> class SolverWrapper : public LinearFunction<Field> {
@ -759,12 +743,14 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage << "**************************************************"<< std::endl; std::cout<<GridLogMessage << "**************************************************"<< std::endl;
typedef CoarsenedMatrix<vSpinColourVector,vTComplex,nbasis> Level1Op; typedef CoarsenedMatrix<vSpinColourVector,vTComplex,nbasis> Level1Op;
NonHermitianLinearOperator<DomainWallFermionR,LatticeFermion> LinOpDwf(Ddwf); // NonHermitianLinearOperator<DomainWallFermionR,LatticeFermion> LinOpDwf(Ddwf);
Level1Op c_Dw (*Coarse4d,0); Level1Op c_Dw (*Coarse4d,0);
std::cout<<GridLogMessage << " Callinig Coarsen the operator " <<std::endl;
LDOp.CoarsenOperator(FGrid,LinOpDwf,Aggregates4D); std::cout<<GridLogMessage << " Coarsening Hw / Dw operator " <<std::endl;
NonHermitianLinearOperator<WilsonFermionR,LatticeFermion> LinOpDw(Dw);
c_Dw.CoarsenOperator(UGrid,LinOpDw,Aggregates4D);
std::cout<<GridLogMessage << "**************************************************"<< std::endl; std::cout<<GridLogMessage << "**************************************************"<< std::endl;
std::cout<<GridLogMessage << " Solve " <<std::endl; std::cout<<GridLogMessage << " Solve " <<std::endl;