From 32762346ad61e46442a7468304b58caf00dd63ab Mon Sep 17 00:00:00 2001
From: paboyle <paboyle@ph.ed.ac.uk>
Date: Wed, 4 Nov 2015 03:25:34 -0800
Subject: [PATCH] Better run time on KNC

---
 benchmarks/Benchmark_memory_bandwidth.cc | 34 ++++++++++++------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/benchmarks/Benchmark_memory_bandwidth.cc b/benchmarks/Benchmark_memory_bandwidth.cc
index 4fd60a7d..cf6f642c 100644
--- a/benchmarks/Benchmark_memory_bandwidth.cc
+++ b/benchmarks/Benchmark_memory_bandwidth.cc
@@ -28,7 +28,7 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<<std::endl;
   std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
   uint64_t lmax=44;
-#define NLOOP (100*lmax*lmax*lmax*lmax/vol)
+#define NLOOP (1*lmax*lmax*lmax*lmax/vol)
   for(int lat=4;lat<=lmax;lat+=4){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
@@ -37,11 +37,11 @@ int main (int argc, char ** argv)
 
       uint64_t Nloop=NLOOP;
 
-      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
 
-      LatticeVec z(&Grid); random(pRNG,z);
-      LatticeVec x(&Grid); random(pRNG,x);
-      LatticeVec y(&Grid); random(pRNG,y);
+      LatticeVec z(&Grid); //random(pRNG,z);
+      LatticeVec x(&Grid); //random(pRNG,x);
+      LatticeVec y(&Grid); //random(pRNG,y);
       double a=2.0;
 
 
@@ -72,11 +72,11 @@ int main (int argc, char ** argv)
       int 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.SeedRandomDevice();
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
 
-      LatticeVec z(&Grid); random(pRNG,z);
-      LatticeVec x(&Grid); random(pRNG,x);
-      LatticeVec y(&Grid); random(pRNG,y);
+      LatticeVec z(&Grid); //random(pRNG,z);
+      LatticeVec x(&Grid); //random(pRNG,x);
+      LatticeVec y(&Grid); //random(pRNG,y);
       double a=2.0;
 
       uint64_t Nloop=NLOOP;
@@ -110,11 +110,11 @@ int main (int argc, char ** argv)
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
-      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
 
-      LatticeVec z(&Grid); random(pRNG,z);
-      LatticeVec x(&Grid); random(pRNG,x);
-      LatticeVec y(&Grid); random(pRNG,y);
+      LatticeVec z(&Grid); //random(pRNG,z);
+      LatticeVec x(&Grid); //random(pRNG,x);
+      LatticeVec y(&Grid); //random(pRNG,y);
       RealD a=2.0;
 
 
@@ -145,10 +145,10 @@ int main (int argc, char ** argv)
       uint64_t Nloop=NLOOP;
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
-      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
-      LatticeVec z(&Grid); random(pRNG,z);
-      LatticeVec x(&Grid); random(pRNG,x);
-      LatticeVec y(&Grid); random(pRNG,y);
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedRandomDevice();
+      LatticeVec z(&Grid); //random(pRNG,z);
+      LatticeVec x(&Grid); //random(pRNG,x);
+      LatticeVec y(&Grid); //random(pRNG,y);
       RealD a=2.0;
       Real nn;      
       double start=usecond();