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Various improvements to make sure scratch buffers don't override each others memory

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mlemanczyk committed 2025-11-03 23:49:55 +01:00
1 parent dcda4b5cba
commit fc22c01ec8
16 files changed
+489 -565
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PerfectNumbers.Core/HeuristicCombinedPrimeTester.cs
+42 -43
View File
@@ -1,5 +1,4 @@
using Open.Numeric.Primes;
using System;
using ILGPU.Runtime;
using System.Runtime.CompilerServices;
using PerfectNumbers.Core.Gpu;
@@ -42,20 +41,20 @@ public sealed class HeuristicCombinedPrimeTester
}
public static void EnsureInitialized()
{
// Intentionally left blank. Accessing this method forces the static constructor to run.
}
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding1Span => CombinedDivisorsEnding1;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding3Span => CombinedDivisorsEnding3;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding7Span => CombinedDivisorsEnding7;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding9Span => CombinedDivisorsEnding9;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding1SquaresSpan => CombinedDivisorsEnding1Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding3SquaresSpan => CombinedDivisorsEnding3Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding7SquaresSpan => CombinedDivisorsEnding7Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding9SquaresSpan => CombinedDivisorsEnding9Squares;
public static void EnsureInitialized()
{
// Intentionally left blank. Accessing this method forces the static constructor to run.
}
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding1Span => CombinedDivisorsEnding1;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding3Span => CombinedDivisorsEnding3;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding7Span => CombinedDivisorsEnding7;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding9Span => CombinedDivisorsEnding9;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding1SquaresSpan => CombinedDivisorsEnding1Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding3SquaresSpan => CombinedDivisorsEnding3Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding7SquaresSpan => CombinedDivisorsEnding7Squares;
internal static ReadOnlySpan<ulong> CombinedDivisorsEnding9SquaresSpan => CombinedDivisorsEnding9Squares;
private const ulong Wheel210 = 210UL;
@@ -223,39 +222,39 @@ public sealed class HeuristicCombinedPrimeTester
};
private static bool HeuristicTrialDivisionGpuDetectsDivisor(ulong n, ulong maxDivisorSquare, byte nMod10)
{
var limiter = GpuPrimeWorkLimiter.Acquire();
var gpu = PrimeTester.PrimeTesterGpuContextPool.Rent(1);
var accelerator = gpu.Accelerator;
var kernel = gpu.HeuristicTrialDivisionKernel;
var flagView1D = gpu.HeuristicFlag.View;
var flagView = flagView1D.AsContiguous();
private static bool HeuristicTrialDivisionGpuDetectsDivisor(ulong n, ulong maxDivisorSquare, byte nMod10)
{
GpuPrimeWorkLimiter.Acquire();
var gpu = PrimeTester.PrimeTesterGpuContextPool.Rent(1);
var accelerator = gpu.Accelerator;
var kernel = PrimeTester.PrimeTesterGpuContextPool.PrimeTesterGpuContextLease.HeuristicTrialDivisionKernel;
var flagView1D = gpu.HeuristicFlag.View;
var flagView = flagView1D.AsContiguous();
bool compositeDetected = false;
int divisorLength = GetCombinedDivisors(nMod10).Length;
bool compositeDetected = false;
int divisorLength = GetCombinedDivisors(nMod10).Length;
int compositeFlag = 0;
flagView1D.CopyFromCPU(ref compositeFlag, 1);
kernel(
divisorLength,
flagView,
n,
maxDivisorSquare,
HeuristicGpuDivisorTableKind.Combined,
gpu.HeuristicGpuTables);
accelerator.Synchronize();
flagView1D.CopyToCPU(ref compositeFlag, 1);
compositeDetected = compositeFlag != 0;
int compositeFlag = 0;
flagView1D.CopyFromCPU(ref compositeFlag, 1);
kernel(
divisorLength,
flagView,
n,
maxDivisorSquare,
HeuristicGpuDivisorTableKind.Combined,
gpu.HeuristicGpuTables);
accelerator.Synchronize();
flagView1D.CopyToCPU(ref compositeFlag, 1);
compositeDetected = compositeFlag != 0;
gpu.Dispose();
limiter.Dispose();
return compositeDetected;
}
gpu.Dispose();
GpuPrimeWorkLimiter.Release();
return compositeDetected;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static bool EvaluateWithOpenNumericFallback(ulong n)
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static bool EvaluateWithOpenNumericFallback(ulong n)
{
return Prime.Numbers.IsPrime(n);
}