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261 lines
7.3 KiB
C++
261 lines
7.3 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/WilsonCompressor.h
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef GRID_QCD_WILSON_COMPRESSOR_H
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#define GRID_QCD_WILSON_COMPRESSOR_H
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namespace Grid {
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namespace QCD {
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonCompressor {
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public:
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int mu;
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int dag;
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WilsonCompressor(int _dag){
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mu=0;
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dag=_dag;
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assert((dag==0)||(dag==1));
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}
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void Point(int p) {
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mu=p;
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};
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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int mudag=mu;
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if (!dag) {
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mudag=(mu+Nd)%(2*Nd);
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}
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switch(mudag) {
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case Xp:
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spProjXp(ret,in);
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break;
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case Yp:
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spProjYp(ret,in);
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break;
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case Zp:
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spProjZp(ret,in);
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break;
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case Tp:
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spProjTp(ret,in);
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break;
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case Xm:
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spProjXm(ret,in);
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break;
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case Ym:
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spProjYm(ret,in);
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break;
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case Zm:
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spProjZm(ret,in);
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break;
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case Tm:
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spProjTm(ret,in);
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break;
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default:
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assert(0);
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break;
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}
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return ret;
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}
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};
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/////////////////////////
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// optimised versions
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/////////////////////////
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonXpCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjXp(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonYpCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjYp(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonZpCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjZp(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonTpCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjTp(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonXmCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjXm(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonYmCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjYm(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonZmCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjZm(ret,in);
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return ret;
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}
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};
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template<class SiteHalfSpinor,class SiteSpinor>
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class WilsonTmCompressor {
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public:
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inline SiteHalfSpinor operator () (const SiteSpinor &in) {
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SiteHalfSpinor ret;
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spProjTm(ret,in);
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return ret;
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}
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};
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// Fast comms buffer manipulation which should inline right through (avoid direction
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// dependent logic that prevents inlining
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template<class vobj,class cobj>
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class WilsonStencil : public CartesianStencil<vobj,cobj> {
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public:
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typedef CartesianCommunicator::CommsRequest_t CommsRequest_t;
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WilsonStencil(GridBase *grid,
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int npoints,
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int checkerboard,
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const std::vector<int> &directions,
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const std::vector<int> &distances) : CartesianStencil<vobj,cobj> (grid,npoints,checkerboard,directions,distances)
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{ };
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template < class compressor>
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void HaloExchangeOpt(const Lattice<vobj> &source,compressor &compress)
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{
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std::vector<std::vector<CommsRequest_t> > reqs;
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HaloExchangeOptGather(source,compress);
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this->CommunicateBegin(reqs);
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this->calls++;
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this->CommunicateComplete(reqs);
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this->CommsMerge();
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}
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template < class compressor>
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void HaloExchangeOptGather(const Lattice<vobj> &source,compressor &compress)
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{
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this->calls++;
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this->Mergers.resize(0);
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this->Packets.resize(0);
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this->HaloGatherOpt(source,compress);
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}
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template < class compressor>
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void HaloGatherOpt(const Lattice<vobj> &source,compressor &compress)
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{
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this->_grid->StencilBarrier();
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// conformable(source._grid,_grid);
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assert(source._grid==this->_grid);
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this->halogtime-=usecond();
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this->u_comm_offset=0;
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int dag = compress.dag;
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WilsonXpCompressor<cobj,vobj> XpCompress;
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WilsonYpCompressor<cobj,vobj> YpCompress;
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WilsonZpCompressor<cobj,vobj> ZpCompress;
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WilsonTpCompressor<cobj,vobj> TpCompress;
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WilsonXmCompressor<cobj,vobj> XmCompress;
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WilsonYmCompressor<cobj,vobj> YmCompress;
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WilsonZmCompressor<cobj,vobj> ZmCompress;
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WilsonTmCompressor<cobj,vobj> TmCompress;
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// Gather all comms buffers
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// for(int point = 0 ; point < _npoints; point++) {
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// compress.Point(point);
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// HaloGatherDir(source,compress,point,face_idx);
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// }
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int face_idx=0;
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if ( dag ) {
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std::cout << " Optimised Dagger compress " <<std::endl;
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this->HaloGatherDir(source,XpCompress,Xp,face_idx);
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this->HaloGatherDir(source,YpCompress,Yp,face_idx);
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this->HaloGatherDir(source,ZpCompress,Zp,face_idx);
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this->HaloGatherDir(source,TpCompress,Tp,face_idx);
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this->HaloGatherDir(source,XmCompress,Xm,face_idx);
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this->HaloGatherDir(source,YmCompress,Ym,face_idx);
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this->HaloGatherDir(source,ZmCompress,Zm,face_idx);
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this->HaloGatherDir(source,TmCompress,Tm,face_idx);
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} else {
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this->HaloGatherDir(source,XmCompress,Xp,face_idx);
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this->HaloGatherDir(source,YmCompress,Yp,face_idx);
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this->HaloGatherDir(source,ZmCompress,Zp,face_idx);
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this->HaloGatherDir(source,TmCompress,Tp,face_idx);
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this->HaloGatherDir(source,XpCompress,Xm,face_idx);
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this->HaloGatherDir(source,YpCompress,Ym,face_idx);
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this->HaloGatherDir(source,ZpCompress,Zm,face_idx);
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this->HaloGatherDir(source,TpCompress,Tm,face_idx);
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}
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this->face_table_computed=1;
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assert(this->u_comm_offset==this->_unified_buffer_size);
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this->halogtime+=usecond();
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}
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};
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}} // namespace close
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#endif
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