mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-09 23:45:36 +00:00
Merge branch 'develop' of github.com:paboyle/Grid into develop
This commit is contained in:
commit
b930eda69d
@ -42,6 +42,7 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
|
||||
#include <Grid/GridQCDcore.h>
|
||||
#include <Grid/qcd/action/Action.h>
|
||||
#include <Grid/qcd/utils/GaugeFix.h>
|
||||
#include <Grid/qcd/utils/CovariantSmearing.h>
|
||||
#include <Grid/qcd/smearing/Smearing.h>
|
||||
#include <Grid/parallelIO/MetaData.h>
|
||||
#include <Grid/qcd/hmc/HMC_aggregate.h>
|
||||
|
87
Grid/qcd/utils/CovariantSmearing.h
Normal file
87
Grid/qcd/utils/CovariantSmearing.h
Normal file
@ -0,0 +1,87 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: ./lib/qcd/action/scalar/CovariantLaplacian.h
|
||||
|
||||
Copyright (C) 2016
|
||||
|
||||
Author: Azusa Yamaguchi
|
||||
|
||||
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
|
||||
*************************************************************************************/
|
||||
#pragma once
|
||||
|
||||
namespace Grid {
|
||||
namespace QCD {
|
||||
|
||||
template <class Gimpl> class CovariantSmearing : public Gimpl
|
||||
{
|
||||
public:
|
||||
INHERIT_GIMPL_TYPES(Gimpl);
|
||||
|
||||
typedef typename Gimpl::GaugeLinkField GaugeMat;
|
||||
typedef typename Gimpl::GaugeField GaugeLorentz;
|
||||
|
||||
template<typename T>
|
||||
static void GaussianSmear(const std::vector<LatticeColourMatrix>& U,
|
||||
T& chi,
|
||||
const Real& width, int Iterations, int orthog)
|
||||
{
|
||||
GridBase *grid = chi._grid;
|
||||
T psi(grid);
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////////
|
||||
// Follow Chroma conventions for width to keep compatibility with previous data
|
||||
// Free field iterates
|
||||
// chi = (1 - w^2/4N p^2)^N chi
|
||||
//
|
||||
// ~ (e^(-w^2/4N p^2)^N chi
|
||||
// ~ (e^(-w^2/4 p^2) chi
|
||||
// ~ (e^(-w'^2/2 p^2) chi [ w' = w/sqrt(2) ]
|
||||
//
|
||||
// Which in coordinate space is proportional to
|
||||
//
|
||||
// e^(-x^2/w^2) = e^(-x^2/2w'^2)
|
||||
//
|
||||
// The 4 is a bit unconventional from Gaussian width perspective, but... it's Chroma convention.
|
||||
// 2nd derivative approx d^2/dx^2 = x+mu + x-mu - 2x
|
||||
//
|
||||
// d^2/dx^2 = - p^2
|
||||
//
|
||||
// chi = ( 1 + w^2/4N d^2/dx^2 )^N chi
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////////
|
||||
Real coeff = (width*width) / Real(4*Iterations);
|
||||
|
||||
int dims = Nd;
|
||||
if( orthog < Nd ) dims=Nd-1;
|
||||
|
||||
for(int n = 0; n < Iterations; ++n) {
|
||||
psi = (-2.0*dims)*chi;
|
||||
for(int mu=0;mu<Nd;mu++) {
|
||||
if ( mu != orthog ) {
|
||||
psi = psi + Gimpl::CovShiftForward(U[mu],mu,chi);
|
||||
psi = psi + Gimpl::CovShiftBackward(U[mu],mu,chi);
|
||||
}
|
||||
}
|
||||
chi = chi + coeff*psi;
|
||||
}
|
||||
}
|
||||
};
|
||||
}}
|
73
tests/smearing/Test_smearing.cc
Normal file
73
tests/smearing/Test_smearing.cc
Normal file
@ -0,0 +1,73 @@
|
||||
/*
|
||||
*
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: ./tests/Test_wilson_cg_prec.cc
|
||||
|
||||
Copyright (C) 2015
|
||||
|
||||
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>
|
||||
|
||||
using namespace std;
|
||||
using namespace Grid;
|
||||
using namespace Grid::QCD;
|
||||
|
||||
|
||||
int main (int argc, char ** argv)
|
||||
{
|
||||
Grid_init(&argc,&argv);
|
||||
|
||||
|
||||
std::vector<int> latt_size = GridDefaultLatt();
|
||||
std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
|
||||
std::vector<int> mpi_layout = GridDefaultMpi();
|
||||
GridCartesian Grid(latt_size,simd_layout,mpi_layout);
|
||||
|
||||
std::vector<int> seeds({1,2,3,4});
|
||||
GridParallelRNG pRNG(&Grid); pRNG.SeedFixedIntegers(seeds);
|
||||
|
||||
LatticeFermion src(&Grid); random(pRNG,src);
|
||||
RealD nrm = norm2(src);
|
||||
LatticeFermion result(&Grid); result=zero;
|
||||
LatticeGaugeField Umu(&Grid);
|
||||
// SU3::HotConfiguration(pRNG,Umu);
|
||||
SU3::ColdConfiguration(Umu);
|
||||
std::vector<LatticeColourMatrix> U(4,&Grid);
|
||||
|
||||
for(int mu=0;mu<Nd;mu++){
|
||||
U[mu] = PeekIndex<LorentzIndex>(Umu,mu);
|
||||
}
|
||||
|
||||
std::vector<int> site({4,4,0,0});
|
||||
src=zero;
|
||||
SpinColourVector scv;
|
||||
scv=zero;
|
||||
scv()(0)(0) = 1.0;
|
||||
pokeSite(scv,src,site);
|
||||
|
||||
CovariantSmearing<PeriodicGimplR>::GaussianSmear(U, src, 2.0, 50, Tdir);
|
||||
|
||||
std::cout << src <<std::endl;
|
||||
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user