portelli/Grid
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paboyle
2018-01-26 23:08:27 +00:00
parent 32523a229c
commit 2a4a0e43c1
7 changed files with 30 additions and 30 deletions
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12
benchmarks/Benchmark_memory_bandwidth.cc
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@ -76,8 +76,8 @@ int main (int argc, char ** argv)
double start=usecond();
for(int i=0;i<Nloop;i++){
axpy(z,a,x,y);
x._odata[0]=z._odata[0]; // serial loop dependence to prevent optimise
y._odata[4]=z._odata[4];
x[0]=z[0]; // serial loop dependence to prevent optimise
y[4]=z[4];
}
double stop=usecond();
double time = (stop-start)/Nloop*1000;
@ -112,8 +112,8 @@ int main (int argc, char ** argv)
double start=usecond();
for(int i=0;i<Nloop;i++){
z=a*x-y;
x._odata[0]=z._odata[0]; // force serial dependency to prevent optimise away
y._odata[4]=z._odata[4];
x[0]=z[0]; // force serial dependency to prevent optimise away
y[4]=z[4];
}
double stop=usecond();
double time = (stop-start)/Nloop*1000;
@ -149,7 +149,7 @@ int main (int argc, char ** argv)
double start=usecond();
for(int i=0;i<Nloop;i++){
z=a*x;
x._odata[0]=z._odata[0]*2.0;
x[0]=z[0]*2.0;
}
double stop=usecond();
double time = (stop-start)/Nloop*1000;
@ -182,7 +182,7 @@ int main (int argc, char ** argv)
double start=usecond();
for(int i=0;i<Nloop;i++){
nn=norm2(x);
vsplat(x._odata[0]._internal[0],nn);
vsplat(x[0]._internal[0],nn);
}
double stop=usecond();
double time = (stop-start)/Nloop*1000;