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General coarse multiRHS move to BLAS implementation

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This commit is contained in:
Peter Boyle 2023-12-21 15:24:48 -05:00
parent 9feb801bb9
commit 9e489887cf
1 changed files with 34 additions and 10 deletions
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44
tests/debug/Test_general_coarse.cc
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@ -33,9 +33,15 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
#include <Grid/algorithms/iterative/PrecGeneralisedConjugateResidualNonHermitian.h>
#include <Grid/algorithms/iterative/BiCGSTAB.h>
#include <Grid/algorithms/multigrid/BatchedBlas.h>
#include <Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHSnew.h>
using namespace std;
using namespace Grid;
gridblasHandle_t GridBLAS::gridblasHandle;
int GridBLAS::gridblasInit;
///////////////////////
// Tells little dirac op to use MdagM as the .Op()
///////////////////////
@ -107,7 +113,7 @@ int main (int argc, char ** argv)
DomainWallFermionD Ddwf(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
const int nbasis = 32;
const int nbasis = 62;
const int cb = 0 ;
LatticeFermion prom(FGrid);
@ -142,7 +148,6 @@ int main (int argc, char ** argv)
HermOpAdaptor<LatticeFermionD> HOA(HermDefOp);
int pp=16;
LittleDiracOp.CoarsenOperator(HOA,Aggregates);
///////////////////////////////////////////////////
@ -229,18 +234,20 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
//////////////////////////////////////////////////////////////////////////////////////
// Create a higher dim coarse grid
const int nrhs=vComplex::Nsimd();
//////////////////////////////////////////////////////////////////////////////////////
const int nrhs=vComplex::Nsimd()*3;
Coordinate mpi=GridDefaultMpi();
Coordinate rhMpi ({1,1,mpi[0],mpi[1],mpi[2],mpi[3]});
Coordinate rhLatt({nrhs,1,clatt[0],clatt[2],clatt[2],clatt[3]});
Coordinate rhSimd({nrhs,1, 1,1,1,1});
Coordinate rhLatt({nrhs,1,clatt[0],clatt[1],clatt[2],clatt[3]});
Coordinate rhSimd({vComplex::Nsimd(),1, 1,1,1,1});
GridCartesian *CoarseMrhs = new GridCartesian(rhLatt,rhSimd,rhMpi);
MultiGeneralCoarsenedMatrix mrhs(LittleDiracOp,CoarseMrhs);
MultiGeneralCoarsenedMatrixnew mrhs(LittleDiracOp,CoarseMrhs);
{
GridParallelRNG rh_CRNG(CoarseMrhs);rh_CRNG.SeedFixedIntegers(cseeds);
@ -248,31 +255,48 @@ int main (int argc, char ** argv)
CoarseVector rh_res(CoarseMrhs);
random(rh_CRNG,rh_phi);
std::cout << "Warmup"<<std::endl;
mrhs.M(rh_phi,rh_res);
const int ncall=100;
const int ncall=5;
RealD t0=-usecond();
for(int i=0;i<ncall;i++){
std::cout << "Call "<<i<<"/"<<ncall<<std::endl;
mrhs.M(rh_phi,rh_res);
}
t0+=usecond();
RealD t1=0;
for(int r=0;r<nrhs;r++){
std::cout << " compare to single RHS "<<r<<"/"<<nrhs<<std::endl;
ExtractSlice(phi,rh_phi,r,0);
ExtractSlice(chi,rh_res,r,0);
LittleDiracOp.M(phi,Aphi);
t1-=usecond();
for(int i=0;i<ncall;i++){
std::cout << "Call "<<i<<"/"<<ncall<<std::endl;
LittleDiracOp.M(phi,Aphi);
}
t1+=usecond();
Coordinate site({0,0,0,0,0});
auto bad = peekSite(chi,site);
auto good = peekSite(Aphi,site);
std::cout << " mrhs [" <<r <<"] "<< norm2(chi)<<std::endl;
std::cout << " srhs [" <<r <<"] "<< norm2(Aphi)<<std::endl;
chi=chi-Aphi;
std::cout << r << " diff " << norm2(chi)<<std::endl;
RealD diff =norm2(chi);
std::cout << r << " diff " << diff<<std::endl;
assert(diff < 1.0e-10);
}
std::cout << nrhs<< " mrhs " << t0/ncall/nrhs <<" us"<<std::endl;
std::cout << nrhs<< " srhs " << t1/ncall/nrhs <<" us"<<std::endl;
}
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
std::cout<<GridLogMessage<<"*******************************************"<<std::endl;
Grid_finalize();
return 0;
}