mlemanczyk/even-perfect-numbers-scanner
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PrimeOrderCalculatorAccelerator.Rent is now created outside of the loops and re-used for all calculations.

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mlemanczyk committed 2025-11-24 22:51:53 +01:00
1 parent 57a50e2a37
commit b9ca95bf8c
53 files changed
+4639 -4229
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PerfectNumbers.Core.Tests/MersenneNumberIncrementalCpuTesterTests.cs
+31 -22
View File
@@ -1,5 +1,6 @@
using FluentAssertions;
using PerfectNumbers.Core.Cpu;
using PerfectNumbers.Core.Gpu.Accelerators;
using Xunit;
using UInt128 = System.UInt128;
@@ -7,30 +8,38 @@ namespace PerfectNumbers.Core.Tests;
public class MersenneNumberIncrementalCpuTesterTests
{
private static LastDigit GetLastDigit(ulong exponent) => (exponent & 3UL) == 3UL ? LastDigit.Seven : LastDigit.One;
private static LastDigit GetLastDigit(ulong exponent) => (exponent & 3UL) == 3UL ? LastDigit.Seven : LastDigit.One;
[Theory]
[InlineData(GpuKernelType.Incremental)]
[InlineData(GpuKernelType.Pow2Mod)]
[Trait("Category", "Fast")]
public void Scan_handles_various_prime_exponents(GpuKernelType type)
{
var tester = new MersenneNumberIncrementalCpuTester(type);
[Theory]
[InlineData(GpuKernelType.Incremental)]
[InlineData(GpuKernelType.Pow2Mod)]
[Trait("Category", "Fast")]
public void Scan_handles_various_prime_exponents(GpuKernelType type)
{
var tester = new MersenneNumberIncrementalCpuTester(type);
if (type == GpuKernelType.Pow2Mod)
{
RunCase(tester, 11UL, 1UL, expectedPrime: false);
RunCase(tester, 71UL, 341_860UL, expectedPrime: false);
}
if (type == GpuKernelType.Pow2Mod)
{
RunCase(tester, 11UL, 1UL, expectedPrime: false);
RunCase(tester, 71UL, 341_860UL, expectedPrime: false);
}
RunCase(tester, 89UL, 1_000UL, expectedPrime: true);
RunCase(tester, 127UL, 1_000UL, expectedPrime: true);
}
RunCase(tester, 89UL, 1_000UL, expectedPrime: true);
RunCase(tester, 127UL, 1_000UL, expectedPrime: true);
}
private static void RunCase(MersenneNumberIncrementalCpuTester tester, ulong exponent, ulong maxK, bool expectedPrime)
{
bool isPrime = true;
tester.Scan(exponent, (UInt128)exponent << 1, GetLastDigit(exponent), (UInt128)maxK, ref isPrime);
isPrime.Should().Be(expectedPrime);
}
private static void RunCase(MersenneNumberIncrementalCpuTester tester, ulong exponent, ulong maxK, bool expectedPrime)
{
bool isPrime = true;
var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
try
{
tester.Scan(gpu, exponent, (UInt128)exponent << 1, GetLastDigit(exponent), (UInt128)maxK, ref isPrime);
isPrime.Should().Be(expectedPrime);
}
finally
{
PrimeOrderCalculatorAccelerator.Return(gpu);
}
}
}