public void GroupedIndex2EntryPoint(int length)
{
var end = (int)Math.Sqrt(Accelerator.MaxNumThreadsPerGroup);
for (int i = 1; i <= end; i <<= 1)
{
var stride = new Index2D(i, i);
var extent = new KernelConfig(
new Index2D(length, length),
stride);
using var buffer = Accelerator.Allocate1D <int>(extent.Size);
buffer.MemSetToZero(Accelerator.DefaultStream);
Execute(extent, buffer.View, stride, extent.GridDim.XY);
var expected = new int[extent.Size];
for (int j = 0; j < length * length; ++j)
{
var gridIdx = Index2D.ReconstructIndex(j, extent.GridDim.XY);
for (int k = 0; k < i * i; ++k)
{
var groupIdx = Index2D.ReconstructIndex(k, extent.GroupDim.XY);
var idx = (gridIdx * stride + groupIdx).ComputeLinearIndex(
extent.GridDim.XY);
expected[idx] = idx;
}
}
Verify(buffer.View, expected);
}
}
5, 6_000)] // Make sure linearIndices > int.MaxValue work.
public void ReconstructIndex2(
long linearIndex, int dimX, int dimY,
int expectedX, int expectedY)
{
var index = Index2D.ReconstructIndex(linearIndex, new Index2D(dimX, dimY));
Assert.Equal(expectedX, index.X);
Assert.Equal(expectedY, index.Y);
}
private static Index2D Reconstruct2DIndex(Index2D totalDim, int linearIndex) => totalDim.ReconstructIndex(linearIndex);
