mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 07:55:35 +00:00
215 lines
8.4 KiB
C++
215 lines
8.4 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./tests/Test_dwf_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;
|
|
|
|
#ifndef HOST_NAME_MAX
|
|
#define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
|
|
#endif
|
|
|
|
|
|
NAMESPACE_BEGIN(Grid);
|
|
template<class Matrix,class Field>
|
|
class SchurDiagMooeeOperatorParanoid : public SchurOperatorBase<Field> {
|
|
public:
|
|
Matrix &_Mat;
|
|
SchurDiagMooeeOperatorParanoid (Matrix &Mat): _Mat(Mat){};
|
|
virtual void Mpc (const Field &in, Field &out) {
|
|
Field tmp(in.Grid());
|
|
tmp.Checkerboard() = !in.Checkerboard();
|
|
// std::cout <<" Mpc starting"<<std::endl;
|
|
|
|
RealD nn = norm2(in); // std::cout <<" Mpc Prior to dslash norm is "<<nn<<std::endl;
|
|
_Mat.Meooe(in,tmp);
|
|
nn = norm2(tmp); //std::cout <<" Mpc Prior to Mooeinv "<<nn<<std::endl;
|
|
_Mat.MooeeInv(tmp,out);
|
|
nn = norm2(out); //std::cout <<" Mpc Prior to dslash norm is "<<nn<<std::endl;
|
|
_Mat.Meooe(out,tmp);
|
|
nn = norm2(tmp); //std::cout <<" Mpc Prior to Mooee "<<nn<<std::endl;
|
|
_Mat.Mooee(in,out);
|
|
nn = norm2(out); //std::cout <<" Mpc Prior to axpy "<<nn<<std::endl;
|
|
axpy(out,-1.0,tmp,out);
|
|
}
|
|
virtual void MpcDag (const Field &in, Field &out){
|
|
Field tmp(in.Grid());
|
|
// std::cout <<" MpcDag starting"<<std::endl;
|
|
RealD nn = norm2(in);// std::cout <<" MpcDag Prior to dslash norm is "<<nn<<std::endl;
|
|
_Mat.MeooeDag(in,tmp);
|
|
_Mat.MooeeInvDag(tmp,out);
|
|
nn = norm2(out);// std::cout <<" MpcDag Prior to dslash norm is "<<nn<<std::endl;
|
|
_Mat.MeooeDag(out,tmp);
|
|
nn = norm2(tmp);// std::cout <<" MpcDag Prior to Mooee "<<nn<<std::endl;
|
|
_Mat.MooeeDag(in,out);
|
|
nn = norm2(out);// std::cout <<" MpcDag Prior to axpy "<<nn<<std::endl;
|
|
axpy(out,-1.0,tmp,out);
|
|
}
|
|
};
|
|
|
|
NAMESPACE_END(Grid);
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
char hostname[HOST_NAME_MAX+1];
|
|
gethostname(hostname, HOST_NAME_MAX+1);
|
|
std::string host(hostname);
|
|
|
|
Grid_init(&argc,&argv);
|
|
|
|
const int Ls=12;
|
|
|
|
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplexD::Nsimd()),GridDefaultMpi());
|
|
GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
|
|
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
|
|
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
|
|
|
|
GridCartesian * UGrid_f = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplexF::Nsimd()),GridDefaultMpi());
|
|
GridRedBlackCartesian * UrbGrid_f = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid_f);
|
|
GridCartesian * FGrid_f = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid_f);
|
|
GridRedBlackCartesian * FrbGrid_f = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid_f);
|
|
|
|
std::vector<int> seeds4({1,2,3,4});
|
|
std::vector<int> seeds5({5,6,7,8});
|
|
GridParallelRNG RNG5(FGrid); RNG5.SeedFixedIntegers(seeds5);
|
|
GridParallelRNG RNG4(UGrid); RNG4.SeedFixedIntegers(seeds4);
|
|
|
|
LatticeFermionD src(FGrid); random(RNG5,src);
|
|
LatticeFermionD result(FGrid); result=Zero();
|
|
LatticeGaugeFieldD Umu(UGrid);
|
|
LatticeGaugeFieldF Umu_f(UGrid_f);
|
|
|
|
SU<Nc>::HotConfiguration(RNG4,Umu);
|
|
|
|
precisionChange(Umu_f,Umu);
|
|
|
|
RealD mass=0.1;
|
|
RealD M5=1.8;
|
|
DomainWallFermionD Ddwf(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
|
|
DomainWallFermionF Ddwf_f(Umu_f,*FGrid_f,*FrbGrid_f,*UGrid_f,*UrbGrid_f,mass,M5);
|
|
|
|
LatticeFermionD src_o(FrbGrid);
|
|
LatticeFermionD result_o(FrbGrid);
|
|
LatticeFermionD result_o_2(FrbGrid);
|
|
pickCheckerboard(Odd,src_o,src);
|
|
result_o.Checkerboard() = Odd;
|
|
result_o = Zero();
|
|
result_o_2.Checkerboard() = Odd;
|
|
result_o_2 = Zero();
|
|
|
|
SchurDiagMooeeOperatorParanoid<DomainWallFermionD,LatticeFermionD> HermOpEO(Ddwf);
|
|
SchurDiagMooeeOperatorParanoid<DomainWallFermionF,LatticeFermionF> HermOpEO_f(Ddwf_f);
|
|
|
|
int nsecs=600;
|
|
if( GridCmdOptionExists(argv,argv+argc,"--seconds") ){
|
|
std::string arg = GridCmdOptionPayload(argv,argv+argc,"--seconds");
|
|
GridCmdOptionInt(arg,nsecs);
|
|
}
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Starting mixed CG for "<<nsecs <<" seconds" << std::endl;
|
|
|
|
MixedPrecisionConjugateGradient<LatticeFermionD,LatticeFermionF> mCG(1.0e-8, 10000, 50, FrbGrid_f, HermOpEO_f, HermOpEO);
|
|
double t1,t2,flops;
|
|
double MdagMsiteflops = 1452; // Mobius (real coeffs)
|
|
// CG overhead: 8 inner product, 4+8 axpy_norm, 4+4 linear comb (2 of)
|
|
double CGsiteflops = (8+4+8+4+4)*Nc*Ns ;
|
|
std:: cout << " MdagM site flops = "<< 4*MdagMsiteflops<<std::endl;
|
|
std:: cout << " CG site flops = "<< CGsiteflops <<std::endl;
|
|
int iters;
|
|
|
|
time_t start = time(NULL);
|
|
|
|
FlightRecorder::ContinueOnFail = 0;
|
|
FlightRecorder::PrintEntireLog = 0;
|
|
FlightRecorder::ChecksumComms = 1;
|
|
FlightRecorder::ChecksumCommsSend=0;
|
|
|
|
if(char *s=getenv("GRID_PRINT_ENTIRE_LOG")) FlightRecorder::PrintEntireLog = atoi(s);
|
|
if(char *s=getenv("GRID_CHECKSUM_RECV_BUF")) FlightRecorder::ChecksumComms = atoi(s);
|
|
if(char *s=getenv("GRID_CHECKSUM_SEND_BUF")) FlightRecorder::ChecksumCommsSend = atoi(s);
|
|
|
|
int iter=0;
|
|
do {
|
|
if ( iter == 0 ) {
|
|
FlightRecorder::SetLoggingMode(FlightRecorder::LoggingModeRecord);
|
|
} else {
|
|
FlightRecorder::SetLoggingMode(FlightRecorder::LoggingModeVerify);
|
|
}
|
|
std::cerr << "******************* SINGLE PRECISION SOLVE "<<iter<<std::endl;
|
|
result_o = Zero();
|
|
t1=usecond();
|
|
mCG(src_o,result_o);
|
|
t2=usecond();
|
|
iters = mCG.TotalInnerIterations; //Number of inner CG iterations
|
|
flops = MdagMsiteflops*4*FrbGrid->gSites()*iters;
|
|
flops+= CGsiteflops*FrbGrid->gSites()*iters;
|
|
std::cout << " SinglePrecision iterations/sec "<< iters/(t2-t1)*1000.*1000.<<std::endl;
|
|
std::cout << " SinglePrecision GF/s "<< flops/(t2-t1)/1000.<<std::endl;
|
|
std::cout << " SinglePrecision error count "<< FlightRecorder::ErrorCount()<<std::endl;
|
|
|
|
assert(FlightRecorder::ErrorCount()==0);
|
|
|
|
std::cout << " FlightRecorder is OK! "<<std::endl;
|
|
iter ++;
|
|
} while (time(NULL) < (start + nsecs/2) );
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Starting double precision CG" << std::endl;
|
|
ConjugateGradient<LatticeFermionD> CG(1.0e-8,10000);
|
|
int i=0;
|
|
do {
|
|
if ( i == 0 ) {
|
|
FlightRecorder::SetLoggingMode(FlightRecorder::LoggingModeRecord);
|
|
} else {
|
|
FlightRecorder::SetLoggingMode(FlightRecorder::LoggingModeVerify);
|
|
}
|
|
std::cerr << "******************* DOUBLE PRECISION SOLVE "<<i<<std::endl;
|
|
result_o_2 = Zero();
|
|
t1=usecond();
|
|
CG(HermOpEO,src_o,result_o_2);
|
|
t2=usecond();
|
|
iters = CG.IterationsToComplete;
|
|
flops = MdagMsiteflops*4*FrbGrid->gSites()*iters;
|
|
flops+= CGsiteflops*FrbGrid->gSites()*iters;
|
|
|
|
std::cout << " DoublePrecision iterations/sec "<< iters/(t2-t1)*1000.*1000.<<std::endl;
|
|
std::cout << " DoublePrecision GF/s "<< flops/(t2-t1)/1000.<<std::endl;
|
|
std::cout << " DoublePrecision error count "<< FlightRecorder::ErrorCount()<<std::endl;
|
|
assert(FlightRecorder::ErrorCount()==0);
|
|
std::cout << " FlightRecorder is OK! "<<std::endl;
|
|
i++;
|
|
} while (time(NULL) < (start + nsecs) );
|
|
|
|
LatticeFermionD diff_o(FrbGrid);
|
|
RealD diff = axpy_norm(diff_o, -1.0, result_o, result_o_2);
|
|
|
|
std::cout << GridLogMessage << "::::::::::::: Diff between mixed and regular CG: " << diff << std::endl;
|
|
assert(diff < 1e-4);
|
|
|
|
Grid_finalize();
|
|
}
|