public void DCTComparisonTest()
{
const int maxVariance = 2;
var source = new float[8][];
var destAan = new float[8][];
var destNvidia = new float[8][];
for (int i = 0; i < 8; i++)
{
source[i] = new float[] { 100, 110, 120, 130, 140, 150, 160, 170 };
destAan[i] = new float[8];
destNvidia[i] = new float[8];
}
var dct = new DCT(20);
dct.DoDCT_AAN(source, destAan);
dct.DoDCT_NVidia(source, destNvidia);
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
float diff = Math.Abs(destAan[i][j] - destNvidia[i][j]);
float ratio = destAan[i][j] / destNvidia[i][j];
Debug.WriteLine("aan={0}, nvidia={1}, diff={2}, ratio={3}", destAan[i][j], destNvidia[i][j], diff, ratio);
Assert.IsTrue(diff <= maxVariance);
}
}
}
public void DCTPerformanceTest()
{
const int runs = 5;
const int iterations = 100000;
var aanPerf = new PerformanceMonitor("AAN", runs);
var nvidiaPerf = new PerformanceMonitor("NVidia", runs);
var source = new float[8][];
var destAan = new float[8][];
var destNvidia = new float[8][];
for (int i = 0; i < 8; i++)
{
source[i] = new float[] { 100, 110, 120, 130, 140, 150, 160, 170 };
destAan[i] = new float[8];
destNvidia[i] = new float[8];
}
var dct = new DCT(20);
for (int run = 0; run < runs; run++)
{
aanPerf.Start();
for (int i = 0; i < iterations; i++)
{
dct.DoDCT_AAN(source, destAan);
}
aanPerf.Stop();
nvidiaPerf.Start();
for (int i = 0; i < iterations; i++)
{
dct.DoDCT_NVidia(source, destNvidia);
}
nvidiaPerf.Stop();
}
// We don't really care at this point -- they're very close.
// Assert.IsTrue(nvidiaPerf.AverageCompletionTimeInMs > aanPerf.AverageCompletionTimeInMs);
}