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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/Gpu/LucasLehmerPrimeTesterTests.cs
+83 -50
View File
@@ -1,5 +1,6 @@
using FluentAssertions;
using PerfectNumbers.Core.Gpu;
using PerfectNumbers.Core.Gpu.Accelerators;
using Xunit;
namespace PerfectNumbers.Core.Tests.Gpu;
@@ -7,59 +8,91 @@ namespace PerfectNumbers.Core.Tests.Gpu;
[Trait("Category", "Slow")]
public class LucasLehmerPrimeTesterTests
{
[Theory]
[InlineData(3UL, true)]
[InlineData(5UL, true)]
[InlineData(11UL, false)]
[Trait("Category", "Fast")]
public void IsMersennePrime_gpu_returns_expected_results(ulong p, bool expected)
{
new MersenneNumberLucasLehmerGpuTester().IsPrime(p, true).Should().Be(expected);
}
[Theory]
[InlineData(3UL, true)]
[InlineData(5UL, true)]
[InlineData(11UL, false)]
[Trait("Category", "Fast")]
public void IsMersennePrime_gpu_returns_expected_results(ulong p, bool expected)
{
var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
try
{
new MersenneNumberLucasLehmerGpuTester().IsPrime(gpu, p, true).Should().Be(expected);
}
finally
{
PrimeOrderCalculatorAccelerator.Return(gpu);
}
}
[Fact]
[Trait("Category", "Fast")]
public void IsMersennePrime_gpu_large_exponent_without_cpu_fallback()
{
// Use a modest exponent that still exercises the NTT path while keeping
// runtime short enough for the unit test environment.
const ulong exponent = 128UL;
var tester = new MersenneNumberLucasLehmerGpuTester();
tester.WarmUpNttParameters(exponent);
tester.IsPrime(exponent, true).Should().BeFalse();
}
[Fact]
[Trait("Category", "Fast")]
public void IsMersennePrime_gpu_large_exponent_without_cpu_fallback()
{
// Use a modest exponent that still exercises the NTT path while keeping
// runtime short enough for the unit test environment.
const ulong exponent = 128UL;
var tester = new MersenneNumberLucasLehmerGpuTester();
tester.WarmUpNttParameters(exponent);
var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
try
{
tester.IsPrime(gpu, exponent, true).Should().BeFalse();
}
finally
{
PrimeOrderCalculatorAccelerator.Return(gpu);
}
}
[Fact]
[Trait("Category", "Fast")]
public void IsMersennePrimeBatch_matches_individual()
{
ulong[] exponents = new ulong[] { 3UL, 5UL, 7UL, 11UL, 13UL, 17UL, 19UL, 23UL };
bool[] expected = new bool[] { true, true, true, false, true, true, true, false };
var tester = new MersenneNumberLucasLehmerGpuTester();
bool[] results = new bool[exponents.Length];
tester.IsMersennePrimeBatch(exponents, results);
results.Should().Equal(expected);
}
[Fact]
[Trait("Category", "Fast")]
public void IsMersennePrimeBatch_matches_individual()
{
ulong[] exponents = new ulong[] { 3UL, 5UL, 7UL, 11UL, 13UL, 17UL, 19UL, 23UL };
bool[] expected = new bool[] { true, true, true, false, true, true, true, false };
var tester = new MersenneNumberLucasLehmerGpuTester();
bool[] results = new bool[exponents.Length];
tester.IsMersennePrimeBatch(exponents, results);
results.Should().Equal(expected);
}
[Theory]
[InlineData(132UL)]
[InlineData(1000UL)]
[Trait("Category", "Slow")]
public void WarmUpNttParameters_populates_cache_for_large_exponent(ulong exponent)
{
var tester = new MersenneNumberLucasLehmerGpuTester();
tester.WarmUpNttParameters(exponent);
tester.IsPrime(exponent, true).Should().BeFalse();
}
[Theory]
[InlineData(132UL)]
[InlineData(1000UL)]
[Trait("Category", "Slow")]
public void WarmUpNttParameters_populates_cache_for_large_exponent(ulong exponent)
{
var tester = new MersenneNumberLucasLehmerGpuTester();
tester.WarmUpNttParameters(exponent);
var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
try
{
tester.IsPrime(gpu, exponent, true).Should().BeFalse();
}
finally
{
PrimeOrderCalculatorAccelerator.Return(gpu);
}
}
[Theory]
[InlineData(3UL, true)]
[InlineData(5UL, true)]
[InlineData(11UL, false)]
[Trait("Category", "Fast")]
public void IsMersennePrime_cpu_matches_expected_results(ulong p, bool expected)
{
new MersenneNumberLucasLehmerCpuTester().IsPrime(p).Should().Be(expected);
}
[Theory]
[InlineData(3UL, true)]
[InlineData(5UL, true)]
[InlineData(11UL, false)]
[Trait("Category", "Fast")]
public void IsMersennePrime_cpu_matches_expected_results(ulong p, bool expected)
{
var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
try
{
new MersenneNumberLucasLehmerCpuTester().IsPrime(gpu, p).Should().Be(expected);
}
finally
{
PrimeOrderCalculatorAccelerator.Return(gpu);
}
}
}