portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2025-06-13 20:57:06 +01:00
Code Releases Activity

Merge pull request #455 from clarkedavida/hisq_fat_links

Browse Source 
Hisq fat links
This commit is contained in:
Peter Boyle
2024-02-29 15:29:39 -05:00
committed by GitHub
parent fce3852dff f70df6e195
commit 436bf1d9d3
8 changed files with 907 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

104
tests/debug/Test_padded_cell.cc
View File

@ -32,6 +32,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
using namespace std;
using namespace Grid;
// This is to optimize the SIMD
template<class vobj> void gpermute(vobj & inout,int perm){
vobj tmp=inout;
if (perm & 0x1 ) { permute(inout,tmp,0); tmp=inout;}
@ -39,7 +40,8 @@ template<class vobj> void gpermute(vobj & inout,int perm){
if (perm & 0x4 ) { permute(inout,tmp,2); tmp=inout;}
if (perm & 0x8 ) { permute(inout,tmp,3); tmp=inout;}
}
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
@ -47,20 +49,21 @@ int main (int argc, char ** argv)
Coordinate latt_size = GridDefaultLatt();
Coordinate simd_layout= GridDefaultSimd(Nd,vComplexD::Nsimd());
Coordinate mpi_layout = GridDefaultMpi();
std::cout << " mpi "<<mpi_layout<<std::endl;
std::cout << " simd "<<simd_layout<<std::endl;
std::cout << " latt "<<latt_size<<std::endl;
std::cout << GridLogMessage << " mpi "<<mpi_layout<<std::endl;
std::cout << GridLogMessage << " simd "<<simd_layout<<std::endl;
std::cout << GridLogMessage << " latt "<<latt_size<<std::endl;
GridCartesian GRID(latt_size,simd_layout,mpi_layout);
// Initialize configuration as hot start.
GridParallelRNG pRNG(&GRID);
pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
LatticeGaugeField Umu(&GRID);
pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
SU<Nc>::HotConfiguration(pRNG,Umu);
Real plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
LatticeComplex trplaq(&GRID);
// Store Umu in U. Peek/Poke mean respectively getElement/setElement.
std::vector<LatticeColourMatrix> U(Nd, Umu.Grid());
for (int mu = 0; mu < Nd; mu++) {
U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
@ -70,9 +73,7 @@ int main (int argc, char ** argv)
LatticeComplex cplaq(&GRID); cplaq=Zero();
/////////////////////////////////////////////////
// Create a padded cell of extra padding depth=1
/////////////////////////////////////////////////
int depth = 1;
PaddedCell Ghost(depth,&GRID);
LatticeGaugeField Ughost = Ghost.Exchange(Umu);
@ -114,18 +115,25 @@ int main (int argc, char ** argv)
}
#endif
///// Array for the site plaquette
// Array for the site plaquette
GridBase *GhostGrid = Ughost.Grid();
LatticeComplex gplaq(GhostGrid);
// Now we're going to put together the "stencil" that will be useful to us when
// calculating the plaquette. Our eventual goal is to make the product
// Umu(x) Unu(x+mu) Umu^dag(x+nu) Unu^dag(x),
// which requires, in order, the sites x, x+mu, x+nu, and x. We arrive at these
// sites relative to x through "shifts", which is represented here by a 4-d
// vector of 0s (no movement) and 1s (shift one unit) at each site. The
// "stencil" is the set of all these shifts.
std::vector<Coordinate> shifts;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
// Umu(x) Unu(x+mu) Umu^dag(x+nu) Unu^dag(x)
Coordinate shift_0(Nd,0);
Coordinate shift_mu(Nd,0); shift_mu[mu]=1;
Coordinate shift_nu(Nd,0); shift_nu[nu]=1;
// push_back creates an element at the end of shifts and
// assigns the data in the argument to it.
shifts.push_back(shift_0);
shifts.push_back(shift_mu);
shifts.push_back(shift_nu);
@ -135,41 +143,51 @@ int main (int argc, char ** argv)
GeneralLocalStencil gStencil(GhostGrid,shifts);
gplaq=Zero();
{
autoView( gp_v , gplaq, CpuWrite);
autoView( t_v , trplaq, CpuRead);
autoView( U_v , Ughost, CpuRead);
for(int ss=0;ss<gp_v.size();ss++){
int s=0;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
auto SE0 = gStencil.GetEntry(s+0,ss);
auto SE1 = gStencil.GetEntry(s+1,ss);
auto SE2 = gStencil.GetEntry(s+2,ss);
auto SE3 = gStencil.GetEntry(s+3,ss);
int o0 = SE0->_offset;
int o1 = SE1->_offset;
int o2 = SE2->_offset;
int o3 = SE3->_offset;
auto U0 = U_v[o0](mu);
auto U1 = U_v[o1](nu);
auto U2 = adj(U_v[o2](mu));
auto U3 = adj(U_v[o3](nu));
// Before doing accelerator stuff, there is an opening and closing of "Views". I guess the
// "Views" are stored in *_v variables listed below.
autoView( gp_v , gplaq, CpuWrite);
autoView( t_v , trplaq, CpuRead);
autoView( U_v , Ughost, CpuRead);
gpermute(U0,SE0->_permute);
gpermute(U1,SE1->_permute);
gpermute(U2,SE2->_permute);
gpermute(U3,SE3->_permute);
gp_v[ss]() =gp_v[ss]() + trace( U0*U1*U2*U3 );
s=s+4;
}
}
// This is now a loop over stencil shift elements. That is, s increases as we make our
// way through the spacetimes sites, but also as we make our way around the plaquette.
for(int ss=0;ss<gp_v.size();ss++){
int s=0;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
auto SE0 = gStencil.GetEntry(s+0,ss);
auto SE1 = gStencil.GetEntry(s+1,ss);
auto SE2 = gStencil.GetEntry(s+2,ss);
auto SE3 = gStencil.GetEntry(s+3,ss);
// Due to our strategy, each offset corresponds to a site.
int o0 = SE0->_offset;
int o1 = SE1->_offset;
int o2 = SE2->_offset;
int o3 = SE3->_offset;
auto U0 = U_v[o0](mu);
auto U1 = U_v[o1](nu);
auto U2 = adj(U_v[o2](mu));
auto U3 = adj(U_v[o3](nu));
gpermute(U0,SE0->_permute);
gpermute(U1,SE1->_permute);
gpermute(U2,SE2->_permute);
gpermute(U3,SE3->_permute);
gp_v[ss]() =gp_v[ss]() + trace( U0*U1*U2*U3 );
s=s+4;
}
}
}
// Here is my understanding of this part: The padded cell has its own periodic BCs, so
// if I take a step to the right at the right-most side of the cell, I end up on the
// left-most side. This means that the plaquettes in the padding are wrong. Luckily
// all we care about are the plaquettes in the cell, which we obtain from Extract.
cplaq = Ghost.Extract(gplaq);
RealD vol = cplaq.Grid()->gSites();
RealD faces = (Nd * (Nd-1))/2;

181
tests/smearing/Test_fatLinks.cc Normal file
View File

@ -0,0 +1,181 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/smearing/Test_fatLinks.cc
Copyright (C) 2023
Author: D. A. Clarke <clarke.davida@gmail.com>
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
*************************************************************************************/
/*
@file Test_fatLinks.cc
@brief test of the HISQ smearing
*/
#include <Grid/Grid.h>
#include <Grid/lattice/PaddedCell.h>
#include <Grid/stencil/GeneralLocalStencil.h>
#include <Grid/qcd/smearing/HISQSmearing.h>
using namespace Grid;
/*! @brief parameter file to easily adjust Nloop */
struct ConfParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(
ConfParameters,
int, benchmark,
int, Nloop);
template <class ReaderClass>
ConfParameters(Reader<ReaderClass>& Reader){
read(Reader, "parameters", *this);
}
};
bool testSmear(GridCartesian& GRID, LatticeGaugeFieldD Umu, LatticeGaugeFieldD Usmr, LatticeGaugeFieldD Unaik,
LatticeGaugeFieldD Ucontrol, Real c1, Real cnaik, Real c3, Real c5, Real c7, Real clp) {
Smear_HISQ<PeriodicGimplD> hisq_fat(&GRID,c1,cnaik,c3,c5,c7,clp);
LatticeGaugeFieldD diff(&GRID), Uproj(&GRID);
hisq_fat.smear(Usmr, Unaik, Umu);
bool result;
if (cnaik < 1e-30) { // Testing anything but Naik term
diff = Ucontrol-Usmr;
auto absDiff = norm2(diff)/norm2(Ucontrol);
if (absDiff < 1e-30) {
Grid_pass(" |Umu-Usmr|/|Umu| = ",absDiff);
result = true;
} else {
Grid_error(" |Umu-Usmr|/|Umu| = ",absDiff);
result = false;
}
} else { // Testing Naik specifically
diff = Ucontrol-Unaik;
auto absDiff = norm2(diff)/norm2(Ucontrol);
if (absDiff < 1e-30) {
Grid_pass(" |Umu-Unaik|/|Umu| = ",absDiff);
result = true;
} else {
Grid_error(" |Umu-Unaik|/|Umu| = ",absDiff);
result = false;
}
hisq_fat.projectU3(Uproj,Ucontrol);
// NerscIO::writeConfiguration(Unaik,"nersc.l8t4b3360.naik");
}
return result;
}
int main (int argc, char** argv) {
// Params for the test.
int Ns = 8;
int Nt = 4;
Coordinate latt_size(Nd,0); latt_size[0]=Ns; latt_size[1]=Ns; latt_size[2]=Ns; latt_size[3]=Nt;
std::string conf_in = "nersc.l8t4b3360";
int threads = GridThread::GetThreads();
typedef LatticeGaugeFieldD LGF;
// Initialize the Grid
Grid_init(&argc,&argv);
Coordinate simd_layout = GridDefaultSimd(Nd,vComplexD::Nsimd());
Coordinate mpi_layout = GridDefaultMpi();
Grid_log("mpi = ",mpi_layout);
Grid_log("simd = ",simd_layout);
Grid_log("latt = ",latt_size);
Grid_log("threads = ",threads);
GridCartesian GRID(latt_size,simd_layout,mpi_layout);
XmlReader Reader("fatParams.xml",false,"grid");
ConfParameters param(Reader);
if(param.benchmark) Grid_log(" Nloop = ",param.Nloop);
LGF Umu(&GRID), Usmr(&GRID), Unaik(&GRID), Ucontrol(&GRID);
// Read the configuration into Umu
FieldMetaData header;
NerscIO::readConfiguration(Umu, header, conf_in);
bool pass=true;
// Carry out various tests
NerscIO::readConfiguration(Ucontrol, header, "nersc.l8t4b3360.357lplink.control");
pass *= testSmear(GRID,Umu,Usmr,Unaik,Ucontrol,1/8.,0.,1/16.,1/64.,1/384.,-1/8.);
NerscIO::readConfiguration(Ucontrol, header, "nersc.l8t4b3360.357link.control");
pass *= testSmear(GRID,Umu,Usmr,Unaik,Ucontrol,1/8.,0.,1/16.,1/64.,1/384.,0.);
NerscIO::readConfiguration(Ucontrol, header, "nersc.l8t4b3360.35link.control");
pass *= testSmear(GRID,Umu,Usmr,Unaik,Ucontrol,1/8.,0.,1/16.,1/64.,0.,0.);
NerscIO::readConfiguration(Ucontrol, header, "nersc.l8t4b3360.3link.control");
pass *= testSmear(GRID,Umu,Usmr,Unaik,Ucontrol,1/8.,0.,1/16.,0.,0.,0.);
NerscIO::readConfiguration(Ucontrol, header, "nersc.l8t4b3360.naik.control");
pass *= testSmear(GRID,Umu,Usmr,Unaik,Ucontrol,0.,0.8675309,0.,0.,0.,0.);
if(pass){
Grid_pass("All tests passed.");
} else {
Grid_error("At least one test failed.");
}
// Test a C-style instantiation
double path_coeff[6] = {1, 2, 3, 4, 5, 6};
Smear_HISQ<PeriodicGimplD> hisq_fat_Cstyle(&GRID,path_coeff);
if (param.benchmark) {
autoView(U_v, Umu, CpuRead); // Gauge accessor
// Read in lattice sequentially, Nloop times
double lookupTime = 0.;
for(int i=0;i<param.Nloop;i++) {
double start = usecond();
for(int ss=0;ss<U_v.size();ss++)
for(int mu=0;mu<Nd;mu++) {
auto U1 = U_v[ss](mu);
}
double stop = usecond();
lookupTime += stop-start; // microseconds
}
Grid_log("Time to lookup: ",lookupTime,"[ms]");
// Raise a matrix to the power nmat, for each link.
auto U1 = U_v[0](0);
for(int nmat=1;nmat<8;nmat++) {
double multTime = 0.;
for(int i=0;i<param.Nloop;i++) {
double start=usecond();
for(int ss=0;ss<U_v.size();ss++)
for(int mu=0;mu<Nd;mu++) {
auto U2 = U1;
for(int j=1;j<nmat;j++) {
U2 *= U1;
}
}
double stop=usecond();
multTime += stop-start;
}
Grid_log("Time to multiply ",nmat," matrices: ",multTime," [ms]");
}
}
Grid_finalize();
}