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This commit is contained in:
paboyle 2017-10-30 00:25:31 +00:00
parent 67131d82f2
commit 78e8704eac
1 changed files with 89 additions and 10 deletions
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99
tests/solver/Test_dwf_mrhs_cg_mpi.cc
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@ -1,4 +1,4 @@
/*************************************************************************************
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
@ -47,20 +47,36 @@ int main (int argc, char ** argv)
std::vector<int> mpi_layout = GridDefaultMpi();
std::vector<int> mpi_split (mpi_layout.size(),1);
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(),
GridDefaultSimd(Nd,vComplex::Nsimd()),
GridDefaultMpi());
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
GridRedBlackCartesian * rbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
int nrhs = UGrid->RankCount() ;
/////////////////////////////////////////////
// Split into 1^4 mpi communicators
/////////////////////////////////////////////
for(int i=0;i<argc;i++){
if(std::string(argv[i]) == "--split"){
for(int k=0;k<mpi_layout.size();k++){
std::stringstream ss;
ss << argv[i+1+k];
ss >> mpi_split[k];
}
break;
}
}
int nrhs = 1;
int me;
for(int i=0;i<mpi_layout.size();i++) nrhs *= (mpi_layout[i]/mpi_split[i]);
GridCartesian * SGrid = new GridCartesian(GridDefaultLatt(),
GridDefaultSimd(Nd,vComplex::Nsimd()),
mpi_split,
*UGrid);
*UGrid,me);
GridCartesian * SFGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,SGrid);
GridRedBlackCartesian * SrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(SGrid);
@ -78,16 +94,46 @@ int main (int argc, char ** argv)
std::vector<FermionField> result(nrhs,FGrid);
FermionField tmp(FGrid);
for(int s=0;s<nrhs;s++) random(pRNG5,src[s]);
for(int s=0;s<nrhs;s++) result[s]=zero;
#undef LEXICO_TEST
#ifdef LEXICO_TEST
{
LatticeFermion lex(FGrid); lex = zero;
LatticeFermion ftmp(FGrid);
Integer stride =10000;
double nrm;
LatticeComplex coor(FGrid);
for(int d=0;d<5;d++){
LatticeCoordinate(coor,d);
ftmp = stride;
ftmp = ftmp * coor;
lex = lex + ftmp;
stride=stride/10;
}
for(int s=0;s<nrhs;s++) {
src[s]=lex;
ftmp = 1000*1000*s;
src[s] = src[s] + ftmp;
}
}
#else
for(int s=0;s<nrhs;s++) {
random(pRNG5,src[s]);
tmp = 100.0*s;
src[s] = (src[s] * 0.1) + tmp;
std::cout << " src ]"<<s<<"] "<<norm2(src[s])<<std::endl;
}
#endif
for(int n =0 ; n< nrhs ; n++) {
std::cout << " src"<<n<<"\n"<< src[n] <<std::endl;
}
LatticeGaugeField Umu(UGrid); SU3::HotConfiguration(pRNG,Umu);
/////////////////
// MPI only sends
/////////////////
int me = UGrid->ThisRank();
LatticeGaugeField s_Umu(SGrid);
FermionField s_src(SFGrid);
FermionField s_tmp(SFGrid);
@ -98,6 +144,36 @@ int main (int argc, char ** argv)
///////////////////////////////////////////////////////////////
Grid_split (Umu,s_Umu);
Grid_split (src,s_src);
std::cout << " split rank " <<me << " s_src "<<norm2(s_src)<<std::endl;
std::cout << " s_src\n "<< s_src <<std::endl;
#ifdef LEXICO_TEST
FermionField s_src_tmp(SFGrid);
FermionField s_src_diff(SFGrid);
{
LatticeFermion lex(SFGrid); lex = zero;
LatticeFermion ftmp(SFGrid);
Integer stride =10000;
double nrm;
LatticeComplex coor(SFGrid);
for(int d=0;d<5;d++){
LatticeCoordinate(coor,d);
ftmp = stride;
ftmp = ftmp * coor;
lex = lex + ftmp;
stride=stride/10;
}
s_src_tmp=lex;
ftmp = 1000*1000*me;
s_src_tmp = s_src_tmp + ftmp;
}
s_src_diff = s_src_tmp - s_src;
std::cout << " s_src_diff " << norm2(s_src_diff)<<std::endl;
std::cout << " s_src \n" << s_src << std::endl;
std::cout << " s_src_tmp \n" << s_src_tmp << std::endl;
std::cout << " s_src_diff \n" << s_src_diff << std::endl;
#endif
///////////////////////////////////////////////////////////////
// Set up N-solvers as trivially parallel
@ -113,10 +189,11 @@ int main (int argc, char ** argv)
MdagMLinearOperator<DomainWallFermionR,FermionField> HermOp(Ddwf);
MdagMLinearOperator<DomainWallFermionR,FermionField> HermOpCk(Dchk);
ConjugateGradient<FermionField> CG((1.0e-5/(me+1)),10000);
ConjugateGradient<FermionField> CG((1.0e-5),10000);
s_res = zero;
CG(HermOp,s_src,s_res);
std::cout << " s_res norm "<<norm2(s_res)<<std::endl;
/////////////////////////////////////////////////////////////
// Report how long they all took
/////////////////////////////////////////////////////////////
@ -134,10 +211,12 @@ int main (int argc, char ** argv)
std::cout << GridLogMessage<< "Unsplitting the result"<<std::endl;
Grid_unsplit(result,s_res);
std::cout << GridLogMessage<< "Checking the residuals"<<std::endl;
for(int n=0;n<nrhs;n++){
std::cout << " res["<<n<<"] norm "<<norm2(result[n])<<std::endl;
HermOpCk.HermOp(result[n],tmp); tmp = tmp - src[n];
std::cout << GridLogMessage<<" resid["<<n<<"] "<< norm2(tmp)<<std::endl;
std::cout << GridLogMessage<<" resid["<<n<<"] "<< norm2(tmp)/norm2(src[n])<<std::endl;
}
Grid_finalize();