mlemanczyk/even-perfect-numbers-scanner
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Hybrid device mode implemented as the current --mersenne=bydivisor CPU execution path. CPU path is now limited to CPU calculations, only.

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mlemanczyk committed 2025-12-01 03:45:39 +01:00
1 parent 353a121d03
commit 941733905b
49 files changed
+4965 -1726
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PerfectNumbers.Core.Tests/MersenneNumberResidueGpuTesterTests.cs
+30 -20
View File
@@ -1,5 +1,6 @@
using FluentAssertions;
using PerfectNumbers.Core.Gpu;
using PerfectNumbers.Core.Gpu.Accelerators;
using Xunit;
using UInt128 = System.UInt128;
@@ -7,27 +8,36 @@ namespace PerfectNumbers.Core.Tests;
public class MersenneNumberResidueGpuTesterTests
{
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(false)]
[InlineData(true)]
[Trait("Category", "Fast")]
public void Scan_handles_various_prime_exponents(bool useGpuOrder)
{
var tester = new MersenneNumberResidueGpuTester(useGpuOrder);
[Theory]
[InlineData(false)]
[InlineData(true)]
[Trait("Category", "Fast")]
public void Scan_handles_various_prime_exponents(bool useGpuOrder)
{
var tester = new MersenneNumberResidueGpuTester(useGpuOrder);
RunCase(tester, 23UL, 2UL, expectedPrime: false);
RunCase(tester, 29UL, 37UL, expectedPrime: false);
RunCase(tester, 31UL, 1_000UL, expectedPrime: true);
RunCase(tester, 89UL, 1_001UL, expectedPrime: true);
RunCase(tester, 127UL, 1_001UL, expectedPrime: true);
}
RunCase(tester, 23UL, 2UL, expectedPrime: false);
RunCase(tester, 29UL, 37UL, expectedPrime: false);
RunCase(tester, 31UL, 1_000UL, expectedPrime: true);
RunCase(tester, 89UL, 1_001UL, expectedPrime: true);
RunCase(tester, 127UL, 1_001UL, expectedPrime: true);
}
private static void RunCase(MersenneNumberResidueGpuTester 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(MersenneNumberResidueGpuTester 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);
}
}
}