private static void AleaOptimisedImpl(
Gpu gpu,
Real[] mSquaredDistances,
Real[] mCoordinates,
int c,
int n,
string name,
Action <deviceptr <Real>, deviceptr <Real>, Constant <int>, Constant <int>, int, int> kernel)
{
using var cudaSquaredDistance = gpu.AllocateDevice <Real>(n, n);
using var cudaCoordinates = gpu.AllocateDevice(mCoordinates);
var timer = Stopwatch.StartNew();
const int blockSize = 256;
var gridSize = Util.DivUp(n, blockSize);
var lp = new LaunchParam(new dim3(gridSize, gridSize, 1), new dim3(blockSize, 1, 1));
var pitch = cudaSquaredDistance.PitchInElements.ToInt32();
gpu.Launch(kernel, lp, cudaSquaredDistance.Ptr, cudaCoordinates.Ptr, Gpu.Constant(blockSize), Gpu.Constant(c), n, pitch);
gpu.Synchronize();
Util.PrintPerformance(timer, name, n, c, n);
Gpu.Copy2D(cudaSquaredDistance, mSquaredDistances, n, n);
}
private static void CudaOptimisedImpl <TInt>(
Real[] mSquaredDistances,
Real[] mCoordinates,
int c,
int n,
string name,
Action <deviceptr <float>, deviceptr <float>, TInt, int, int> kernel,
Func <int, TInt> numCoordGetter)
{
var gpu = Gpu.Default;
using (var cudaSquaredDistance = gpu.AllocateDevice <Real>(n, n))
using (var cudaCoordinates = gpu.AllocateDevice(mCoordinates))
{
var timer = Stopwatch.StartNew();
const int blockSize = 128;
var gridSize = Util.DivUp(n, blockSize);
var lp = new LaunchParam(new dim3(gridSize, gridSize, 1), new dim3(blockSize, 1, 1), 2 * c * blockSize * sizeof(Real));
var pitch = cudaSquaredDistance.PitchInElements.ToInt32();
gpu.Launch(kernel, lp, cudaSquaredDistance.Ptr, cudaCoordinates.Ptr, numCoordGetter(c), n, pitch);
gpu.Synchronize();
Util.PrintPerformance(timer, name, n, c, n);
Gpu.Copy2D(cudaSquaredDistance, mSquaredDistances, n, n);
}
}