Marek Lemańczyk
4c4d4243fb
# Conflicts: # PerfectNumbers.Core/Gpu/GpuContextPool.cs # PerfectNumbers.Core/Gpu/GpuKernelLease.cs # PerfectNumbers.Core/Gpu/GpuKernelPool.cs # PerfectNumbers.Core/Gpu/GpuStaticTableInitializer.cs # PerfectNumbers.Core/Gpu/Kernels/PrimeOrderSpecialMaxKernels.cs # PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs # PerfectNumbers.Core/PrimeOrderCalculator.Gpu.cs # PerfectNumbers.Core/PrimeTester.cs
323 lines
13 KiB
C#
323 lines
13 KiB
C#
using PerfectNumbers.Core;
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using System.Collections.Concurrent;
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using ILGPU;
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using ILGPU.Runtime;
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using static PerfectNumbers.Core.Gpu.GpuContextPool;
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namespace PerfectNumbers.Core.Gpu;
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public readonly struct ResidueAutomatonArgs
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{
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public readonly ulong Q0M10;
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public readonly ulong Step10;
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public readonly ulong Q0M8;
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public readonly ulong Step8;
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public readonly ulong Q0M3;
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public readonly ulong Step3;
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public readonly ulong Q0M5;
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public readonly ulong Step5;
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public ResidueAutomatonArgs(ulong q0m10, ulong step10, ulong q0m8, ulong step8, ulong q0m3, ulong step3, ulong q0m5, ulong step5)
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{
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Q0M10 = q0m10; Step10 = step10; Q0M8 = q0m8; Step8 = step8; Q0M3 = q0m3; Step3 = step3; Q0M5 = q0m5; Step5 = step5;
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}
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}
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public sealed class KernelContainer
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{
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// Serializes first-time initialization of kernels/buffers per accelerator.
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public Action<AcceleratorStream, Index1D, ulong, ulong, ArrayView<GpuUInt128>, ArrayView<ulong>>? Order;
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public Action<AcceleratorStream, Index1D, ulong, GpuUInt128, GpuUInt128, byte, ulong,
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ulong, ulong, ulong, ulong, ArrayView<ulong>, ArrayView1D<ulong, Stride1D.Dense>>? Incremental;
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public Action<AcceleratorStream, Index1D, ulong, GpuUInt128, GpuUInt128, byte, ulong,
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ResidueAutomatonArgs, ArrayView<ulong>, ArrayView1D<ulong, Stride1D.Dense>,
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ArrayView1D<uint, Stride1D.Dense>, ArrayView1D<uint, Stride1D.Dense>,
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ArrayView1D<ulong, Stride1D.Dense>, ArrayView1D<ulong, Stride1D.Dense>>? Pow2Mod;
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public Action<AcceleratorStream, Index1D, ulong, GpuUInt128, GpuUInt128, byte, ulong,
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ResidueAutomatonArgs, ArrayView<int>, ArrayView1D<ulong, Stride1D.Dense>>? IncrementalOrder;
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public Action<AcceleratorStream, Index1D, ulong, GpuUInt128, GpuUInt128, byte, ulong,
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ResidueAutomatonArgs, ArrayView<int>, ArrayView1D<ulong, Stride1D.Dense>>? Pow2ModOrder;
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public Action<AcceleratorStream, Index1D, ulong, uint, ArrayView1D<uint, Stride1D.Dense>, ArrayView1D<ulong, Stride1D.Dense>, int, ArrayView1D<ulong, Stride1D.Dense>, ArrayView1D<int, Stride1D.Dense>, ArrayView1D<int, Stride1D.Dense>, ArrayView1D<ulong, Stride1D.Dense>>? SmallPrimeFactor;
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public Action<AcceleratorStream, Index1D, ulong, ArrayView1D<ulong, Stride1D.Dense>, int, MontgomeryDivisorData, ArrayView1D<ulong, Stride1D.Dense>, ArrayView1D<ushort, Stride1D.Dense>>? SpecialMax;
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// Optional device buffer with small divisor cycles (<= 4M). Index = divisor, value = cycle length.
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallCycles;
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public MemoryBuffer1D<uint, Stride1D.Dense>? SmallPrimeFactorsPrimes;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallPrimeFactorsSquares;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallPrimeFactorPrimeSlots;
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public MemoryBuffer1D<int, Stride1D.Dense>? SmallPrimeFactorExponentSlots;
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public MemoryBuffer1D<int, Stride1D.Dense>? SmallPrimeFactorCountSlot;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallPrimeFactorRemainingSlot;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SpecialMaxFactors;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SpecialMaxCandidates;
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public MemoryBuffer1D<ushort, Stride1D.Dense>? SpecialMaxResult;
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public MemoryBuffer1D<uint, Stride1D.Dense>? SmallPrimesLastOne;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallPrimesPow2LastOne;
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public MemoryBuffer1D<uint, Stride1D.Dense>? SmallPrimesLastSeven;
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public MemoryBuffer1D<ulong, Stride1D.Dense>? SmallPrimesPow2LastSeven;
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public static T InitOnce<T>(ref T? slot, Func<T> factory) where T : class
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{
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var current = Volatile.Read(ref slot);
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if (current is not null)
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{
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return current;
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}
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current = Volatile.Read(ref slot);
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if (current is null)
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{
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current = factory();
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Volatile.Write(ref slot, current);
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}
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return current;
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}
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public void Dispose() => GpuKernelPool.Return(this);
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}
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public readonly struct ResiduePrimeViews(
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ArrayView1D<uint, Stride1D.Dense> lastOne,
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ArrayView1D<uint, Stride1D.Dense> lastSeven,
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ArrayView1D<ulong, Stride1D.Dense> lastOnePow2,
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ArrayView1D<ulong, Stride1D.Dense> lastSevenPow2)
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{
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public readonly ArrayView1D<uint, Stride1D.Dense> LastOne = lastOne;
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public readonly ArrayView1D<uint, Stride1D.Dense> LastSeven = lastSeven;
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public readonly ArrayView1D<ulong, Stride1D.Dense> LastOnePow2 = lastOnePow2;
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public readonly ArrayView1D<ulong, Stride1D.Dense> LastSevenPow2 = lastSevenPow2;
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}
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public readonly struct SmallPrimeFactorTables(
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MemoryBuffer1D<uint, Stride1D.Dense> primes,
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MemoryBuffer1D<ulong, Stride1D.Dense> squares,
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int count)
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{
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public readonly MemoryBuffer1D<uint, Stride1D.Dense> Primes = primes;
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public readonly MemoryBuffer1D<ulong, Stride1D.Dense> Squares = squares;
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public readonly int Count = count;
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public ArrayView1D<uint, Stride1D.Dense> PrimesView => Primes.View;
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public ArrayView1D<ulong, Stride1D.Dense> SquaresView => Squares.View;
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}
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public readonly struct SmallPrimeFactorScratch(
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MemoryBuffer1D<ulong, Stride1D.Dense> primeSlots,
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MemoryBuffer1D<int, Stride1D.Dense> exponentSlots,
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MemoryBuffer1D<int, Stride1D.Dense> countSlot,
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MemoryBuffer1D<ulong, Stride1D.Dense> remainingSlot)
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{
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public readonly MemoryBuffer1D<ulong, Stride1D.Dense> PrimeSlots = primeSlots;
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public readonly MemoryBuffer1D<int, Stride1D.Dense> ExponentSlots = exponentSlots;
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public readonly MemoryBuffer1D<int, Stride1D.Dense> CountSlot = countSlot;
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public readonly MemoryBuffer1D<ulong, Stride1D.Dense> RemainingSlot = remainingSlot;
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public void Clear()
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{
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PrimeSlots.MemSetToZero();
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ExponentSlots.MemSetToZero();
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CountSlot.MemSetToZero();
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RemainingSlot.MemSetToZero();
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}
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}
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public readonly struct SpecialMaxScratch(
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MemoryBuffer1D<ulong, Stride1D.Dense> factorValues,
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MemoryBuffer1D<ulong, Stride1D.Dense> candidateValues,
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MemoryBuffer1D<ushort, Stride1D.Dense> resultSlot)
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{
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public readonly MemoryBuffer1D<ulong, Stride1D.Dense> FactorValues = factorValues;
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public readonly MemoryBuffer1D<ulong, Stride1D.Dense> CandidateValues = candidateValues;
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public readonly MemoryBuffer1D<ushort, Stride1D.Dense> ResultSlot = resultSlot;
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public ArrayView1D<ulong, Stride1D.Dense> FactorsView => FactorValues.View;
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public ArrayView1D<ulong, Stride1D.Dense> CandidatesView => CandidateValues.View;
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public ArrayView1D<ushort, Stride1D.Dense> ResultView => ResultSlot.View;
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}
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public class GpuKernelPool
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{
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private static readonly ConcurrentQueue<KernelContainer> KernelCache = new(); // TODO: Replace this concurrent map with a simple accelerator-indexed lookup once kernel launchers are prewarmed during startup so we can drop the thread-safe wrapper entirely.
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public static KernelContainer GetKernels() => KernelCache.TryDequeue(out var container)
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? container
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: new KernelContainer();
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public static void Return(KernelContainer container) => KernelCache.Enqueue(container);
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internal static void PreloadStaticTables(KernelContainer kernels, Accelerator accelerator)
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{
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EnsureSmallCyclesOnDevice(kernels, accelerator);
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EnsureSmallPrimesOnDevice(kernels, accelerator);
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EnsureSmallPrimeFactorTables(kernels, accelerator);
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}
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// Ensures the small cycles table is uploaded to the device for the given accelerator.
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// Returns the ArrayView to pass into kernels (when kernels are extended to accept it).
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public static ArrayView1D<ulong, Stride1D.Dense> EnsureSmallCyclesOnDevice(KernelContainer kernels, Accelerator accelerator)
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{
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if (kernels.SmallCycles is { } buffer)
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{
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return buffer.View;
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}
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var host = MersenneDivisorCycles.Shared.ExportSmallCyclesSnapshot(); // TODO: Preload this device buffer during startup and keep it immutable so we can delete the lock above in favor of the preloaded snapshot.
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var device = accelerator.Allocate1D<ulong>(host.Length);
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device.View.CopyFromCPU(host);
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kernels.SmallCycles = device;
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return device.View;
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}
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public static ResiduePrimeViews EnsureSmallPrimesOnDevice(KernelContainer kernels, Accelerator accelerator)
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{
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if (kernels.SmallPrimesLastOne is { } lastOne &&
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kernels.SmallPrimesLastSeven is { } lastSeven &&
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kernels.SmallPrimesPow2LastOne is { } lastOnePow2 &&
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kernels.SmallPrimesPow2LastSeven is { } lastSevenPow2)
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{
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return new ResiduePrimeViews(lastOne.View, lastSeven.View, lastOnePow2.View, lastSevenPow2.View);
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}
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if (kernels.SmallPrimesLastOne is { } existingLastOne &&
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kernels.SmallPrimesLastSeven is { } existingLastSeven &&
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kernels.SmallPrimesPow2LastOne is { } existingLastOnePow2 &&
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kernels.SmallPrimesPow2LastSeven is { } existingLastSevenPow2)
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{
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return new ResiduePrimeViews(existingLastOne.View, existingLastSeven.View, existingLastOnePow2.View, existingLastSevenPow2.View);
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}
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var hostLastOne = PrimesGenerator.SmallPrimesLastOne;
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var hostLastSeven = PrimesGenerator.SmallPrimesLastSeven;
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var hostLastOnePow2 = PrimesGenerator.SmallPrimesPow2LastOne;
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var hostLastSevenPow2 = PrimesGenerator.SmallPrimesPow2LastSeven;
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var deviceLastOne = accelerator.Allocate1D<uint>(hostLastOne.Length);
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deviceLastOne.View.CopyFromCPU(hostLastOne);
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var deviceLastSeven = accelerator.Allocate1D<uint>(hostLastSeven.Length);
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deviceLastSeven.View.CopyFromCPU(hostLastSeven);
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var deviceLastOnePow2 = accelerator.Allocate1D<ulong>(hostLastOnePow2.Length);
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deviceLastOnePow2.View.CopyFromCPU(hostLastOnePow2);
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var deviceLastSevenPow2 = accelerator.Allocate1D<ulong>(hostLastSevenPow2.Length);
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deviceLastSevenPow2.View.CopyFromCPU(hostLastSevenPow2);
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kernels.SmallPrimesLastOne = deviceLastOne;
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kernels.SmallPrimesLastSeven = deviceLastSeven;
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kernels.SmallPrimesPow2LastOne = deviceLastOnePow2;
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kernels.SmallPrimesPow2LastSeven = deviceLastSevenPow2;
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return new ResiduePrimeViews(deviceLastOne.View, deviceLastSeven.View, deviceLastOnePow2.View, deviceLastSevenPow2.View);
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}
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public static SmallPrimeFactorTables EnsureSmallPrimeFactorTables(KernelContainer kernels, Accelerator accelerator)
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{
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if (kernels.SmallPrimeFactorsPrimes is { } primeBuffer && kernels.SmallPrimeFactorsSquares is { } squareBuffer)
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{
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return new SmallPrimeFactorTables(primeBuffer, squareBuffer, (int)primeBuffer.Length);
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}
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if (kernels.SmallPrimeFactorsPrimes is { } existingPrimes && kernels.SmallPrimeFactorsSquares is { } existingSquares)
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{
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return new SmallPrimeFactorTables(existingPrimes, existingSquares, (int)existingPrimes.Length);
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}
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var hostPrimes = PrimesGenerator.SmallPrimes;
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var hostSquares = PrimesGenerator.SmallPrimesPow2;
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var devicePrimes = accelerator.Allocate1D<uint>(hostPrimes.Length);
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devicePrimes.View.CopyFromCPU(hostPrimes);
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var deviceSquares = accelerator.Allocate1D<ulong>(hostSquares.Length);
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deviceSquares.View.CopyFromCPU(hostSquares);
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kernels.SmallPrimeFactorsPrimes = devicePrimes;
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kernels.SmallPrimeFactorsSquares = deviceSquares;
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return new SmallPrimeFactorTables(devicePrimes, deviceSquares, hostPrimes.Length);
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}
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public static SmallPrimeFactorScratch EnsureSmallPrimeFactorScratch(KernelContainer kernels, Accelerator accelerator, int slotCount)
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{
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MemoryBuffer1D<ulong, Stride1D.Dense>? primeSlots = kernels.SmallPrimeFactorPrimeSlots;
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if (primeSlots is null || primeSlots.Length < slotCount)
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{
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primeSlots?.Dispose();
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primeSlots = accelerator.Allocate1D<ulong>(slotCount);
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kernels.SmallPrimeFactorPrimeSlots = primeSlots;
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}
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MemoryBuffer1D<int, Stride1D.Dense>? exponentSlots = kernels.SmallPrimeFactorExponentSlots;
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if (exponentSlots is null || exponentSlots.Length < slotCount)
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{
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exponentSlots?.Dispose();
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exponentSlots = accelerator.Allocate1D<int>(slotCount);
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kernels.SmallPrimeFactorExponentSlots = exponentSlots;
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}
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MemoryBuffer1D<int, Stride1D.Dense>? countSlot = kernels.SmallPrimeFactorCountSlot;
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if (countSlot is null)
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{
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countSlot = accelerator.Allocate1D<int>(1);
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kernels.SmallPrimeFactorCountSlot = countSlot;
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}
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MemoryBuffer1D<ulong, Stride1D.Dense>? remainingSlot = kernels.SmallPrimeFactorRemainingSlot;
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if (remainingSlot is null)
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{
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remainingSlot = accelerator.Allocate1D<ulong>(1);
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kernels.SmallPrimeFactorRemainingSlot = remainingSlot;
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}
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return new SmallPrimeFactorScratch(primeSlots!, exponentSlots!, countSlot!, remainingSlot!);
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}
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public static SpecialMaxScratch EnsureSpecialMaxScratch(KernelContainer kernels, Accelerator accelerator, int factorCapacity)
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{
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MemoryBuffer1D<ulong, Stride1D.Dense>? factorValues = kernels.SpecialMaxFactors;
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if (factorValues is null || factorValues.Length < factorCapacity)
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{
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factorValues?.Dispose();
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factorValues = accelerator.Allocate1D<ulong>(factorCapacity);
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kernels.SpecialMaxFactors = factorValues;
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}
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MemoryBuffer1D<ulong, Stride1D.Dense>? candidateValues = kernels.SpecialMaxCandidates;
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if (candidateValues is null || candidateValues.Length < factorCapacity)
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{
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candidateValues?.Dispose();
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candidateValues = accelerator.Allocate1D<ulong>(factorCapacity);
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kernels.SpecialMaxCandidates = candidateValues;
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}
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MemoryBuffer1D<ushort, Stride1D.Dense>? resultSlot = kernels.SpecialMaxResult;
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if (resultSlot is null)
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{
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resultSlot = accelerator.Allocate1D<ushort>(1);
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kernels.SpecialMaxResult = resultSlot;
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}
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return new SpecialMaxScratch(factorValues!, candidateValues!, resultSlot!);
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}
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public static GpuKernelLease GetKernel(bool useGpuOrder)
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{
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GpuPrimeWorkLimiter.Acquire();
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var gpu = Rent();
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var kernels = GetKernels();
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return GpuKernelLease.Rent(gpu, kernels);
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}
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/// <summary>
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/// Runs a GPU action with an acquired accelerator and stream.
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/// </summary>
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/// <param name="action">Action to run with (Accelerator, Stream).</param>
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public static void Run(Action<Accelerator, AcceleratorStream> action)
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{
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var lease = GetKernel(useGpuOrder: true);
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var accelerator = lease.Accelerator;
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var stream = accelerator.CreateStream();
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action(accelerator, stream);
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stream.Dispose();
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lease.Dispose();
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}
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}
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