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0bc004de7c
Tanh/Zolo * (Cayley/PartFrac/ContFrac) * (Mobius/Shamir/Wilson) Approx Representation Kernel. All are done with space-time taking part in checkerboarding, Ls uncheckerboarded Have only so far tested the Domain Wall limit of mobius, and at that only checked that it i) Inverts ii) 5dim DW == Ls copies of 4dim D2 iii) MeeInv Mee == 1 iv) Meo+Mee+Moe+Moo == M unprec. v) MpcDagMpc is hermitan vi) Mdag is the adjoint of M between stochastic vectors. That said, the RB schur solve, RB MpcDagMpc solve, Unprec solve all converge and the true residual becomes small; so pretty good tests.
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
#ifndef GRID_QCD_WILSON_FERMION_H
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#define GRID_QCD_WILSON_FERMION_H
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namespace Grid {
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namespace QCD {
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class WilsonFermion : public FermionOperator<LatticeFermion,LatticeGaugeField>
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{
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public:
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///////////////////////////////////////////////////////////////
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// Implement the abstract base
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///////////////////////////////////////////////////////////////
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GridBase *GaugeGrid(void) { return _grid ;}
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GridBase *GaugeRedBlackGrid(void) { return _cbgrid ;}
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GridBase *FermionGrid(void) { return _grid;}
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GridBase *FermionRedBlackGrid(void) { return _cbgrid;}
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// override multiply
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virtual RealD M (const LatticeFermion &in, LatticeFermion &out);
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virtual RealD Mdag (const LatticeFermion &in, LatticeFermion &out);
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// half checkerboard operaions
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void Meooe (const LatticeFermion &in, LatticeFermion &out);
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void MeooeDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void Mooee (const LatticeFermion &in, LatticeFermion &out); // remain virtual so we
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virtual void MooeeDag (const LatticeFermion &in, LatticeFermion &out); // can derive Clover
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virtual void MooeeInv (const LatticeFermion &in, LatticeFermion &out); // from Wilson bas
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virtual void MooeeInvDag (const LatticeFermion &in, LatticeFermion &out);
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// non-hermitian hopping term; half cb or both
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void Dhop (const LatticeFermion &in, LatticeFermion &out,int dag);
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void DhopOE(const LatticeFermion &in, LatticeFermion &out,int dag);
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void DhopEO(const LatticeFermion &in, LatticeFermion &out,int dag);
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///////////////////////////////////////////////////////////////
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// Extra methods added by derived
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///////////////////////////////////////////////////////////////
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void DhopInternal(CartesianStencil & st,
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LatticeDoubledGaugeField &U,
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const LatticeFermion &in,
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LatticeFermion &out,
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int dag);
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// Constructor
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WilsonFermion(LatticeGaugeField &_Umu,GridCartesian &Fgrid,GridRedBlackCartesian &Hgrid,RealD _mass);
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// DoubleStore
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void DoubleStore(LatticeDoubledGaugeField &Uds,const LatticeGaugeField &Umu);
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///////////////////////////////////////////////////////////////
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// Data members require to support the functionality
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///////////////////////////////////////////////////////////////
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static int HandOptDslash; // these are a temporary hack
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static int MortonOrder;
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protected:
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RealD mass;
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GridBase * _grid;
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GridBase * _cbgrid;
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static const int npoint=8;
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static const std::vector<int> directions ;
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static const std::vector<int> displacements;
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//Defines the stencils for even and odd
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CartesianStencil Stencil;
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CartesianStencil StencilEven;
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CartesianStencil StencilOdd;
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// Copy of the gauge field , with even and odd subsets
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LatticeDoubledGaugeField Umu;
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LatticeDoubledGaugeField UmuEven;
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LatticeDoubledGaugeField UmuOdd;
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// Comms buffer
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std::vector<vHalfSpinColourVector,alignedAllocator<vHalfSpinColourVector> > comm_buf;
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};
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}
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}
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#endif
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