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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.
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
#ifndef GRID_QCD_CONTINUED_FRACTION_H
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#define GRID_QCD_CONTINUED_FRACTION_H
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namespace Grid {
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namespace QCD {
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class ContinuedFractionFermion5D : public WilsonFermion5D
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{
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public:
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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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virtual void Meooe (const LatticeFermion &in, LatticeFermion &out);
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virtual void MeooeDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void Mooee (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeDag (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeInv (const LatticeFermion &in, LatticeFermion &out);
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virtual void MooeeInvDag (const LatticeFermion &in, LatticeFermion &out);
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private:
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Approx::zolotarev_data *zdata;
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// Cont frac
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RealD mass;
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RealD R;
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RealD scale;
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std::vector<double> Beta;
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std::vector<double> cc;;
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std::vector<double> cc_d;;
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std::vector<double> sqrt_cc;
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std::vector<double> See;
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std::vector<double> Aee;
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// Constructors
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ContinuedFractionFermion5D(LatticeGaugeField &_Umu,
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GridCartesian &FiveDimGrid,
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GridRedBlackCartesian &FiveDimRedBlackGrid,
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GridCartesian &FourDimGrid,
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GridRedBlackCartesian &FourDimRedBlackGrid,
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RealD _mass,RealD M5);
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};
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}
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}
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#endif
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