GpuKernelPool.GetOrAddKernels removed in --mersenne=bydivisor mode. PartialFactorResult.WithAdditionalPrime will now modify the current instance instead of creating new copy for better performance. SmallPrimeFactorViews renamed to SmallPrimeFactorGpuTables for consistency with other static tables.

PerfectNumbers.Core/Gpu/SmallPrimeFactorGpuTables.cs

@@ -0,0 +1,34 @@
+using System.Runtime.CompilerServices;
+using ILGPU;
+using ILGPU.Runtime;
+
+namespace PerfectNumbers.Core.Gpu;
+
+public readonly struct SmallPrimeFactorGpuTables
+{
+	private static readonly Accelerator[] _accelerators = AcceleratorPool.Shared.Accelerators;
+	private static readonly SmallPrimeFactorGpuTables[] _sharedTables = new SmallPrimeFactorGpuTables[PerfectNumberConstants.RollingAccelerators];
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	internal static SmallPrimeFactorGpuTables GetStaticTables(int acceleratorIndex) => _sharedTables[acceleratorIndex];
+
+	[MethodImpl(MethodImplOptions.AggressiveInlining)]
+	internal static void WarmUp(int acceleratorIndex, AcceleratorStream stream) => _sharedTables[acceleratorIndex] = new SmallPrimeFactorGpuTables(_accelerators[acceleratorIndex], stream);
+
+	public readonly MemoryBuffer1D<uint, Stride1D.Dense> Primes;
+	public readonly MemoryBuffer1D<ulong, Stride1D.Dense> Squares;
+	public readonly int Count;
+
+	public SmallPrimeFactorGpuTables(Accelerator accelerator, AcceleratorStream stream)
+	{
+		var hostPrimes = PrimesGenerator.SmallPrimes;
+		var hostSquares = PrimesGenerator.SmallPrimesPow2;
+
+		MemoryBuffer1D<uint, Stride1D.Dense>? devicePrimes = accelerator.Allocate1D(stream, hostPrimes);
+		MemoryBuffer1D<ulong, Stride1D.Dense>? deviceSquares = accelerator.Allocate1D(stream, hostSquares);
+
+		Primes = devicePrimes;
+		Squares = deviceSquares;
+		Count = hostPrimes.Length;
+	}
+}