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BinaryGcd switched to the best performing variant according to benchmarks.

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mlemanczyk committed 2025-11-14 11:43:16 +01:00
1 parent be435b7760
commit 42447c4e43
9 files changed
+112 -166
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PerfectNumbers.Core/Gpu/Kernels/PrimeOrderKernels.cs
-18
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@@ -2,7 +2,6 @@ using System.Numerics;
using System.Runtime.CompilerServices;
using ILGPU;
using ILGPU.Runtime;
using PerfectNumbers.Core.Cpu;
namespace PerfectNumbers.Core.Gpu;
@@ -1207,23 +1206,6 @@ internal static partial class PrimeOrderGpuHeuristics
remainders[index] = ULongExtensions.Pow2MontgomeryModWindowedGpuConvertToStandard(divisor, exponent);
}
private static Action<AcceleratorStream, Index1D, ArrayView1D<GpuUInt128, Stride1D.Dense>, GpuUInt128, ArrayView1D<GpuUInt128, Stride1D.Dense>> GetPow2ModWideKernel(Accelerator accelerator)
{
var pool = _pow2ModWideKernel ??= [];
if (pool.TryGetValue(accelerator, out var cached))
{
return cached;
}
var loaded = accelerator.LoadAutoGroupedStreamKernel<Index1D, ArrayView1D<GpuUInt128, Stride1D.Dense>, GpuUInt128, ArrayView1D<GpuUInt128, Stride1D.Dense>>(Pow2ModKernelWide);
var kernel = KernelUtil.GetKernel(loaded);
cached = kernel.CreateLauncherDelegate<Action<AcceleratorStream, Index1D, ArrayView1D<GpuUInt128, Stride1D.Dense>, GpuUInt128, ArrayView1D<GpuUInt128, Stride1D.Dense>>>();
pool[accelerator] = cached;
return cached;
}
/// This kernel always sets the result of the corresponding element. Callers don't need to clear the output buffers.
internal static void Pow2ModKernelWide(Index1D index, ArrayView1D<GpuUInt128, Stride1D.Dense> exponents, GpuUInt128 modulus, ArrayView1D<GpuUInt128, Stride1D.Dense> remainders)
{