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ec8cd11c1f
Grid/tests/core/Test_wilson_clover.cc
Guido Cossu ec8cd11c1f Cleanup and prepare for pull request
2017-10-24 13:21:17 +01:00

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./benchmarks/Benchmark_wilson.cc
Copyright (C) 2015
Author: Guido Cossu <guido.cossu@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);
GridRedBlackCartesian RBGrid(latt_size,simd_layout,mpi_layout);
int threads = GridThread::GetThreads();
std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
std::cout<<GridLogMessage << "Grid floating point word size is REALF"<< sizeof(RealF)<<std::endl;
std::cout<<GridLogMessage << "Grid floating point word size is REALD"<< sizeof(RealD)<<std::endl;
std::cout<<GridLogMessage << "Grid floating point word size is REAL"<< sizeof(Real)<<std::endl;
std::vector<int> seeds({1,2,3,4});
GridParallelRNG pRNG(&Grid);
pRNG.SeedFixedIntegers(seeds);
// pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
typedef typename WilsonCloverFermionR::FermionField FermionField;
typename WilsonCloverFermionR::ImplParams params;
FermionField src (&Grid); random(pRNG,src);
FermionField result(&Grid); result=zero;
FermionField result2(&Grid); result2=zero;
FermionField ref(&Grid); ref=zero;
FermionField tmp(&Grid); tmp=zero;
FermionField err(&Grid); err=zero;
FermionField err2(&Grid); err2=zero;
FermionField phi (&Grid); random(pRNG,phi);
FermionField chi (&Grid); random(pRNG,chi);
LatticeGaugeField Umu(&Grid); SU3::HotConfiguration(pRNG,Umu);
std::vector<LatticeColourMatrix> U(4,&Grid);
double volume=1;
for(int mu=0;mu<Nd;mu++){
volume=volume*latt_size[mu];
}
RealD mass= 0.1;
RealD csw = 1.0;
WilsonCloverFermionR Dwc(Umu,Grid,RBGrid,mass,csw,params);
Dwc.ImportGauge(Umu);
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Testing Dhop against cshift implementation "<<std::endl;
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
std::cout<<GridLogMessage << "Calling Dwc"<<std::endl;
int ncall=1000;
double t0=usecond();
for(int i=0;i<ncall;i++){
Dwc.Dhop(src,result,0);
}
double t1=usecond();
double t2;
double flops=(16*(3*(6+8+8)) + 15*3*2)*volume*ncall; // == 66*16 + == 1146
std::cout<<GridLogMessage << "Called Dwc"<<std::endl;
std::cout<<GridLogMessage << "norm result "<< norm2(result)<<std::endl;
std::cout<<GridLogMessage << "norm ref "<< norm2(ref)<<std::endl;
std::cout<<GridLogMessage << "mflop/s = "<< flops/(t1-t0)<<std::endl;
err = ref-result;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<<std::endl;
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Testing that Deo + Doe = Dunprec "<<std::endl;
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
FermionField src_e (&RBGrid);
FermionField src_o (&RBGrid);
FermionField r_e (&RBGrid);
FermionField r_o (&RBGrid);
FermionField r_eo (&Grid);
pickCheckerboard(Even,src_e,src);
pickCheckerboard(Odd,src_o,src);
Dwc.Meooe(src_e,r_o); std::cout<<GridLogMessage<<"Applied Meo"<<std::endl;
Dwc.Meooe(src_o,r_e); std::cout<<GridLogMessage<<"Applied Moe"<<std::endl;
Dwc.Dhop (src,ref,DaggerNo);
setCheckerboard(r_eo,r_o);
setCheckerboard(r_eo,r_e);
err= ref - r_eo;
std::cout<<GridLogMessage << "EO norm diff "<< norm2(err)<< " "<<norm2(ref)<< " " << norm2(r_eo) <<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Test Ddagger is the dagger of D by requiring "<<std::endl;
std::cout<<GridLogMessage<<"= < phi | Deo | chi > * = < chi | Deo^dag| phi> "<<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
FermionField chi_e (&RBGrid);
FermionField chi_o (&RBGrid);
FermionField dchi_e (&RBGrid);
FermionField dchi_o (&RBGrid);
FermionField phi_e (&RBGrid);
FermionField phi_o (&RBGrid);
FermionField dphi_e (&RBGrid);
FermionField dphi_o (&RBGrid);
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
pickCheckerboard(Even,phi_e,phi);
pickCheckerboard(Odd ,phi_o,phi);
Dwc.Meooe(chi_e,dchi_o);
Dwc.Meooe(chi_o,dchi_e);
Dwc.MeooeDag(phi_e,dphi_o);
Dwc.MeooeDag(phi_o,dphi_e);
ComplexD pDce = innerProduct(phi_e,dchi_e);
ComplexD pDco = innerProduct(phi_o,dchi_o);
ComplexD cDpe = innerProduct(chi_e,dphi_e);
ComplexD cDpo = innerProduct(chi_o,dphi_o);
std::cout<<GridLogMessage <<"e "<<pDce<<" "<<cDpe <<std::endl;
std::cout<<GridLogMessage <<"o "<<pDco<<" "<<cDpo <<std::endl;
std::cout<<GridLogMessage <<"pDce - conj(cDpo) "<< pDce-conj(cDpo) <<std::endl;
std::cout<<GridLogMessage <<"pDco - conj(cDpe) "<< pDco-conj(cDpe) <<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Test MeeInv Mee = 1 (if csw!=0) "<<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
Dwc.Mooee(chi_e,src_e);
Dwc.MooeeInv(src_e,phi_e);
Dwc.Mooee(chi_o,src_o);
Dwc.MooeeInv(src_o,phi_o);
setCheckerboard(phi,phi_e);
setCheckerboard(phi,phi_o);
err = phi-chi;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<< std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Test MeeDag MeeInvDag = 1 (if csw!=0) "<<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
Dwc.MooeeDag(chi_e,src_e);
Dwc.MooeeInvDag(src_e,phi_e);
Dwc.MooeeDag(chi_o,src_o);
Dwc.MooeeInvDag(src_o,phi_o);
setCheckerboard(phi,phi_e);
setCheckerboard(phi,phi_o);
err = phi-chi;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<< std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Test MeeInv MeeDag = 1 (if csw!=0) "<<std::endl;
std::cout<<GridLogMessage<<"=============================================================="<<std::endl;
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
Dwc.MooeeDag(chi_e,src_e);
Dwc.MooeeInv(src_e,phi_e);
Dwc.MooeeDag(chi_o,src_o);
Dwc.MooeeInv(src_o,phi_o);
setCheckerboard(phi,phi_e);
setCheckerboard(phi,phi_o);
err = phi-chi;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<< std::endl;
std::cout<<GridLogMessage<<"================================================================"<<std::endl;
std::cout<<GridLogMessage<<"= Testing gauge covariance Clover term with EO preconditioning "<<std::endl;
std::cout<<GridLogMessage<<"================================================================"<<std::endl;
chi=zero; phi=zero; tmp=zero;
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
pickCheckerboard(Even,phi_e,phi);
pickCheckerboard(Odd ,phi_o,phi);
Dwc.Mooee(src_e,chi_e);
Dwc.Mooee(src_o,chi_o);
setCheckerboard(chi,chi_e);
setCheckerboard(chi,chi_o);
setCheckerboard(src,src_e);
setCheckerboard(src,src_o);
////////////////////// Gauge Transformation
std::vector<int> seeds2({5,6,7,8});
GridParallelRNG pRNG2(&Grid); pRNG2.SeedFixedIntegers(seeds2);
LatticeColourMatrix Omega(&Grid);
LatticeColourMatrix ShiftedOmega(&Grid);
LatticeGaugeField U_prime(&Grid); U_prime=zero;
LatticeColourMatrix U_prime_mu(&Grid); U_prime_mu=zero;
SU<Nc>::LieRandomize(pRNG2, Omega, 1.0);
for (int mu=0;mu<Nd;mu++){
U[mu]=peekLorentz(Umu,mu);
ShiftedOmega=Cshift(Omega,mu,1);
U_prime_mu=Omega*U[mu]*adj(ShiftedOmega);
pokeLorentz(U_prime,U_prime_mu,mu);
}
/////////////////
WilsonCloverFermionR Dwc_prime(U_prime,Grid,RBGrid,mass,csw,params);
Dwc_prime.ImportGauge(U_prime);
tmp=Omega*src;
pickCheckerboard(Even,src_e,tmp);
pickCheckerboard(Odd ,src_o,tmp);
Dwc_prime.Mooee(src_e,phi_e);
Dwc_prime.Mooee(src_o,phi_o);
setCheckerboard(phi,phi_e);
setCheckerboard(phi,phi_o);
err = chi - adj(Omega)*phi;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<< std::endl;
std::cout<<GridLogMessage<<"================================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Testing gauge covariance Clover term w/o EO preconditioning "<<std::endl;
std::cout<<GridLogMessage<<"================================================================"<<std::endl;
chi=zero; phi=zero;
WilsonFermionR Dw(Umu,Grid,RBGrid,mass,params);
Dw.ImportGauge(Umu);
Dw.M(src,result);
Dwc.M(src,chi);
Dwc_prime.M(Omega*src,phi);
WilsonFermionR Dw_prime(U_prime,Grid,RBGrid,mass,params);
Dw_prime.ImportGauge(U_prime);
Dw_prime.M(Omega*src,result2);
err = chi-adj(Omega)*phi;
err2 = result-adj(Omega)*result2;
std::cout<<GridLogMessage << "norm diff Wilson "<< norm2(err)<< std::endl;
std::cout<<GridLogMessage << "norm diff WilsonClover "<< norm2(err2)<< std::endl;
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
std::cout<<GridLogMessage<<"= Testing Mooee(csw=0) Clover to reproduce Mooee Wilson "<<std::endl;
std::cout<<GridLogMessage<<"=========================================================="<<std::endl;
chi=zero; phi=zero; err=zero;
WilsonCloverFermionR Dwc_csw0(Umu,Grid,RBGrid,mass,0.0,params); // <-- Notice: csw=0
Dwc_csw0.ImportGauge(Umu);
pickCheckerboard(Even,phi_e,phi);
pickCheckerboard(Odd ,phi_o,phi);
pickCheckerboard(Even,chi_e,chi);
pickCheckerboard(Odd ,chi_o,chi);
Dw.Mooee(src_e,chi_e);
Dw.Mooee(src_o,chi_o);
Dwc_csw0.Mooee(src_e,phi_e);
Dwc_csw0.Mooee(src_o,phi_o);
setCheckerboard(chi,chi_e);
setCheckerboard(chi,chi_o);
setCheckerboard(phi,phi_e);
setCheckerboard(phi,phi_o);
setCheckerboard(src,src_e);
setCheckerboard(src,src_o);
err = chi - phi;
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<< std::endl;
Grid_finalize();
}
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