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BitContradiction filtering changes to cut invalid divisors during checks.

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mlemanczyk committed 2026-01-31 11:48:56 +01:00
1 parent b31aab4d89
commit f1eaab8582
19 files changed
+3912 -2361
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PerfectNumbers.Core/EnvironmentConfiguration.cs
+23 -1
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@@ -4,18 +4,21 @@ using PerfectNumbers.Core.Gpu;
namespace PerfectNumbers.Core;
#pragma warning disable CA2211 // The fields are settable on purpose for the best performance
#pragma warning disable CA2211 // Non-constant fields should not be visible
public static class EnvironmentConfiguration
{
public static ulong DivisorLimit = ulong.MaxValue;
public static int GpuBatchSize = GpuConstants.ScanBatchSize;
public static int GpuPrimeThreads = 1;
public static int GpuRatio = PerfectNumberConstants.GpuRatio;
public static ComputationDevice MersenneDevice = ComputationDevice.Cpu;
public static BigInteger MinK = BigInteger.One;
public static ComputationDevice OrderDevice = ComputationDevice.Cpu;
public static int RollingAccelerators = PerfectNumberConstants.RollingAccelerators;
public static string? StateFilePath;
public static int ThreadCount;
public static bool UseGpu;
public static bool UseGpuOrder;
public static bool UseHybridOrder;
public static bool UseCpuOrder;
@@ -24,6 +27,7 @@ public static class EnvironmentConfiguration
public static ByDivisor.ByDivisorClassModel? ByDivisorClassModel;
public static ByDivisor.ByDivisorScanTuning ByDivisorScanTuning = ByDivisor.ByDivisorScanTuning.Default;
public static double ByDivisorCheapKLimit = 10_000d;
public static ByDivisorKIncrementMode ByDivisorKIncrementMode = ByDivisorKIncrementMode.Sequential;
public static Persistence.ByDivisorClassModelRepository? ByDivisorClassModelRepository;
public static Persistence.KStateRepository? ByDivisorKStateRepository;
public static Persistence.KStateRepository? ByDivisorCheapKStateRepository;
@@ -31,13 +35,31 @@ public static class EnvironmentConfiguration
public static Persistence.KStateRepository? ByDivisorGroupsStateRepository;
public static Persistence.Pow2Minus1StateRepository? ByDivisorPow2Minus1Repository;
public static Persistence.BitContradictionStateRepository? BitContradictionStateRepository;
public static CalculationMethod CalculationMethod = CalculationMethod.Residue;
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static void Initialize()
{
if (MersenneDevice == ComputationDevice.Gpu &&
ByDivisorKIncrementMode == ByDivisorKIncrementMode.BitContradiction)
{
OrderDevice = ComputationDevice.Gpu;
}
UseGpuOrder = OrderDevice == ComputationDevice.Gpu;
UseHybridOrder = OrderDevice == ComputationDevice.Hybrid;
UseCpuOrder = OrderDevice == ComputationDevice.Cpu;
UseGpu =
UseGpuOrder || UseHybridOrder ||
MersenneDevice is ComputationDevice.Hybrid or ComputationDevice.Gpu;
RollingAccelerators = UseGpu
? Math.Min(Math.Min(
PerfectNumberConstants.RollingAccelerators, GpuPrimeThreads), ThreadCount)
: 0;
UsePow2GroupDivisors = ByDivisorKIncrementMode == ByDivisorKIncrementMode.Pow2Groups;
}
}