From 2f776d51c65be46b04eded605b3756a554e6bcad Mon Sep 17 00:00:00 2001
From: Peter Boyle <paboyle@ph.ed.ac.uk>
Date: Thu, 5 Jul 2018 06:58:37 -0400
Subject: [PATCH] Gpu specific benchmark saturates memory. Can enhance Grid to
 do this for expressions, but a bitof (known) work.

---
 benchmarks/Benchmark_su3_gpu.cc | 420 ++++++++++++++++++++++++++++++++
 1 file changed, 420 insertions(+)
 create mode 100644 benchmarks/Benchmark_su3_gpu.cc

diff --git a/benchmarks/Benchmark_su3_gpu.cc b/benchmarks/Benchmark_su3_gpu.cc
new file mode 100644
index 00000000..34017ed8
--- /dev/null
+++ b/benchmarks/Benchmark_su3_gpu.cc
@@ -0,0 +1,420 @@
+/*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./benchmarks/Benchmark_su3.cc
+
+    Copyright (C) 2015
+
+Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
+
+    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;
+
+
+int main (int argc, char ** argv)
+{
+  Grid_init(&argc,&argv);
+
+#define LMIN (16)
+#define LMAX (48)
+#define LADD (8)
+
+  int64_t Nwarm=20;
+  int64_t Nloop=500;
+
+  Coordinate simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
+  Coordinate mpi_layout  = GridDefaultMpi();
+
+  int64_t threads = GridThread::GetThreads();
+  std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  ext/ins z = x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid);// random(pRNG,z);
+      LatticeColourMatrix x(&Grid);// random(pRNG,x);
+      LatticeColourMatrix y(&Grid);// random(pRNG,y);
+
+      auto x_v = x.View();
+      auto y_v = y.View();
+      auto z_v = z.View();
+      const uint64_t Nsite = x_v.size();
+      const uint64_t nsimd = vComplex::Nsimd();
+      const uint64_t    NN = Nsite*nsimd;
+      for(int64_t i=0;i<Nwarm;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = xx*yy;
+	  insertLane(lane,z_v[ss],zz);
+        });
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = xx*yy;
+	  insertLane(lane,z_v[ss],zz);
+        });
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=3.0*vol*Nc*Nc*sizeof(Complex);
+      double footprint=3.0*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6.0+8.0+8.0)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<footprint<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  ext/ins x = x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid);// random(pRNG,z);
+      LatticeColourMatrix x(&Grid);// random(pRNG,x);
+      LatticeColourMatrix y(&Grid);// random(pRNG,y);
+
+      auto x_v = x.View();
+      auto y_v = y.View();
+      auto z_v = z.View();
+      const uint64_t Nsite = x_v.size();
+      const uint64_t nsimd = vComplex::Nsimd();
+      const uint64_t    NN = Nsite*nsimd;
+      for(int64_t i=0;i<Nwarm;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = xx*yy;
+	  insertLane(lane,x_v[ss],zz);
+        });
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = xx*yy;
+	  insertLane(lane,x_v[ss],zz);
+        });
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=3.0*vol*Nc*Nc*sizeof(Complex);
+      double footprint=2.0*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6.0+8.0+8.0)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<footprint<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  ext/ins z = z + x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid);// random(pRNG,z);
+      LatticeColourMatrix x(&Grid);// random(pRNG,x);
+      LatticeColourMatrix y(&Grid);// random(pRNG,y);
+
+      auto x_v = x.View();
+      auto y_v = y.View();
+      auto z_v = z.View();
+      const uint64_t Nsite = x_v.size();
+      const uint64_t nsimd = vComplex::Nsimd();
+      const uint64_t    NN = Nsite*nsimd;
+      for(int64_t i=0;i<Nwarm;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = extractLane(lane,z_v[ss]);
+	  zz = zz + xx * yy;
+	  insertLane(lane,z_v[ss],zz);
+        });
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = extractLane(lane,z_v[ss]);
+	  zz = zz + xx * yy;
+	  insertLane(lane,x_v[ss],zz);
+        });
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=4.0*vol*Nc*Nc*sizeof(Complex);
+      double footprint=3.0*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6.0+8.0+8.0)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<footprint<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  ext/ins w = z + x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid);// random(pRNG,z);
+      LatticeColourMatrix x(&Grid);// random(pRNG,x);
+      LatticeColourMatrix y(&Grid);// random(pRNG,y);
+      LatticeColourMatrix w(&Grid);// random(pRNG,y);
+
+      auto x_v = x.View();
+      auto y_v = y.View();
+      auto z_v = z.View();
+      auto w_v = z.View();
+      const uint64_t Nsite = x_v.size();
+      const uint64_t nsimd = vComplex::Nsimd();
+      const uint64_t    NN = Nsite*nsimd;
+      for(int64_t i=0;i<Nwarm;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = extractLane(lane,z_v[ss]);
+	  auto ww = zz + xx * yy;
+	  insertLane(lane,w_v[ss],ww);
+        });
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	accelerator_loopN( sss, NN, {
+	  uint64_t lane = sss % nsimd; 
+	  uint64_t ss   = sss / nsimd;
+	  auto xx = extractLane(lane,x_v[ss]);
+	  auto yy = extractLane(lane,y_v[ss]);
+	  auto zz = extractLane(lane,z_v[ss]);
+	  auto ww = zz + xx * yy;
+	  insertLane(lane,w_v[ss],ww);
+        });
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=4.0*vol*Nc*Nc*sizeof(Complex);
+      double footprint=3.0*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6.0+8.0+8.0)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<footprint<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+
+
+#if 1
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  x= x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
+
+      for(int64_t i=0;i<Nwarm;i++){
+	x=x*y;
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	x=x*y;
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=3.0*vol*Nc*Nc*sizeof(Complex);
+      double footprint=2.0*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6.0+8.0+8.0)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<footprint<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  z= x*y"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
+
+      for(int64_t i=0;i<Nwarm;i++){
+	z=x*y;
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	z=x*y;
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=3*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6+8+8)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  mult(z,x,y)"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
+
+      for(int64_t i=0;i<Nwarm;i++){
+	mult(z,x,y);
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	mult(z,x,y);
+	//	mac(z,x,y);
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=3*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(6+8+8)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"    \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking SU3xSU3  mac(z,x,y)"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s\t\t GFlop/s"<<std::endl;
+  std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+
+  for(int lat=LMIN;lat<=LMAX;lat+=LADD){
+
+      Coordinate latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
+
+      for(int64_t i=0;i<Nwarm;i++){
+	mac(z,x,y);
+      }
+      double start=usecond();
+      for(int64_t i=0;i<Nloop;i++){
+	mac(z,x,y);
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000.0;
+      
+      double bytes=4*vol*Nc*Nc*sizeof(Complex);
+      double flops=Nc*Nc*(8+8+8)*vol;
+      std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"   \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;
+
+    }
+#endif
+  Grid_finalize();
+}