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feat: changed CompactWilsonExpClover exponentiation to Taylor expansion

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with Horner scheme.
This commit is contained in:
Fabian Joswig
2022-10-25 15:19:43 +01:00
parent 477ebf24f4
commit 9e4835a3e3
2 changed files with 50 additions and 164 deletions
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11
Grid/qcd/action/fermion/implementation/CompactWilsonCloverFermionImplementation.h
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@@ -305,6 +305,7 @@ void CompactWilsonCloverFermion<Impl, CloverHelpers>::ImportGauge(const GaugeFie
GridBase* grid = _Umu.Grid();
typename Impl::GaugeLinkField Bx(grid), By(grid), Bz(grid), Ex(grid), Ey(grid), Ez(grid);
CloverField TmpOriginal(grid);
CloverField TmpInverse(grid);
// Compute the field strength terms mu>nu
double t2 = usecond();
@@ -326,14 +327,14 @@ void CompactWilsonCloverFermion<Impl, CloverHelpers>::ImportGauge(const GaugeFie
TmpOriginal += Helpers::fillCloverZT(Ez) * csw_t;
// Handle mass term based on clover policy
CloverHelpers::MassTerm(TmpOriginal, this->diag_mass);
// Convert the data layout of the clover term
double t4 = usecond();
CompactHelpers::ConvertLayout(TmpOriginal, Diagonal, Triangle);
CloverHelpers::Exponentiate_Clover(TmpOriginal, TmpInverse, csw_t, this->diag_mass);
// Exponentiate the clover (nothing happens in case of the standard clover)
double t5 = usecond();
CloverHelpers::Exponentiate_Clover(Diagonal, Triangle, csw_t, this->diag_mass);
CompactHelpers::ConvertLayout(TmpOriginal, Diagonal, Triangle);
// Possible modify the boundary values
double t6 = usecond();
@@ -341,7 +342,9 @@ void CompactWilsonCloverFermion<Impl, CloverHelpers>::ImportGauge(const GaugeFie
// Invert the Clover term (explicit inversion needed for the improvement in case of open boundary conditions)
double t7 = usecond();
CompactHelpers::Invert(Diagonal, Triangle, DiagonalInv, TriangleInv);
//CompactHelpers::Invert(Diagonal, Triangle, DiagonalInv, TriangleInv);
CompactHelpers::ConvertLayout(TmpInverse, DiagonalInv, TriangleInv);
//if(open_boundaries) handle differently!
// Fill the remaining clover fields
double t8 = usecond();