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