Restore pre-residue mode behavior and tests
This commit is contained in:
Marek Lemańczyk committed
1 parent
23e8d306b1
commit
aa683215b2
8 files changed
+51
-678
No files matched your search
@@ -1,9 +1,4 @@
|
||||
using System.IO;
|
||||
using System.Linq;
|
||||
using System.Reflection;
|
||||
using FluentAssertions;
|
||||
using PerfectNumbers.Core;
|
||||
using PerfectNumbers.Core.Cpu;
|
||||
using PerfectNumbers.Core.Gpu;
|
||||
using Xunit;
|
||||
using UInt128 = System.UInt128;
|
||||
@@ -26,270 +21,13 @@ public class MersenneNumberResidueGpuTesterTests
|
||||
RunCase(tester, 29UL, 37UL, expectedPrime: false);
|
||||
RunCase(tester, 31UL, 1_000UL, expectedPrime: true);
|
||||
RunCase(tester, 89UL, 1_001UL, expectedPrime: true);
|
||||
RunCase(tester, 107UL, 1_001UL, expectedPrime: true);
|
||||
RunCase(tester, 127UL, 1_001UL, expectedPrime: true);
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(false)]
|
||||
[InlineData(true)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Gpu_residue_scan_matches_cpu_for_small_configurations(bool useGpuOrder)
|
||||
{
|
||||
var gpuTester = new MersenneNumberResidueGpuTester(useGpuOrder);
|
||||
var cpuTester = new MersenneNumberResidueCpuTester();
|
||||
|
||||
var configurations = new (ulong Exponent, UInt128 PerSetLimit, UInt128 SetCount, UInt128 OverallLimit)[]
|
||||
{
|
||||
(31UL, 8UL, 6UL, 48UL),
|
||||
(61UL, 9UL, 9UL, 81UL),
|
||||
(89UL, 12UL, 8UL, 96UL),
|
||||
(107UL, 16UL, 8UL, 128UL),
|
||||
};
|
||||
|
||||
foreach (var (exponent, perSetLimit, setCount, overallLimit) in configurations)
|
||||
{
|
||||
bool gpuPrime = true;
|
||||
bool gpuExhausted = false;
|
||||
gpuTester.Scan(
|
||||
exponent,
|
||||
(UInt128)exponent << 1,
|
||||
LastDigitIsSeven(exponent),
|
||||
perSetLimit,
|
||||
setCount,
|
||||
overallLimit,
|
||||
ref gpuPrime,
|
||||
ref gpuExhausted);
|
||||
|
||||
bool cpuPrime = true;
|
||||
bool cpuExhausted = false;
|
||||
cpuTester.Scan(
|
||||
exponent,
|
||||
(UInt128)exponent << 1,
|
||||
LastDigitIsSeven(exponent),
|
||||
perSetLimit,
|
||||
setCount,
|
||||
overallLimit,
|
||||
ref cpuPrime,
|
||||
ref cpuExhausted);
|
||||
|
||||
gpuPrime.Should().Be(cpuPrime, $"GPU residue scan should match CPU for exponent {exponent}");
|
||||
gpuExhausted.Should().Be(cpuExhausted, $"GPU residue scan should report identical exhaustion for exponent {exponent}");
|
||||
}
|
||||
}
|
||||
|
||||
[Fact]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_residue_gpu_handles_inaccurate_small_cycle_entries()
|
||||
{
|
||||
const ulong exponent = 23UL;
|
||||
const ulong divisor = 47UL; // 47 | M_23
|
||||
|
||||
string tempPath = Path.GetTempFileName();
|
||||
try
|
||||
{
|
||||
using (var writer = new BinaryWriter(File.Open(tempPath, FileMode.Create, FileAccess.Write, FileShare.Read)))
|
||||
{
|
||||
writer.Write(divisor);
|
||||
writer.Write((ulong)uint.MaxValue);
|
||||
}
|
||||
|
||||
var cycles = MersenneDivisorCycles.Shared;
|
||||
var tableField = typeof(MersenneDivisorCycles).GetField("_table", BindingFlags.NonPublic | BindingFlags.Instance)!;
|
||||
var smallCyclesField = typeof(MersenneDivisorCycles).GetField("_smallCycles", BindingFlags.NonPublic | BindingFlags.Instance)!;
|
||||
|
||||
var originalTable = ((List<(ulong Divisor, ulong Cycle)>)tableField.GetValue(cycles)!).Select(x => x).ToList();
|
||||
var originalSmall = (uint[]?)smallCyclesField.GetValue(cycles);
|
||||
uint[]? backupSmall = originalSmall is null ? null : (uint[])originalSmall.Clone();
|
||||
|
||||
cycles.LoadFrom(tempPath);
|
||||
GpuContextPool.DisposeAll();
|
||||
|
||||
try
|
||||
{
|
||||
var tester = new MersenneNumberResidueGpuTester(useGpuOrder: false);
|
||||
|
||||
bool isPrime = true;
|
||||
bool exhausted = false;
|
||||
|
||||
tester.Scan(
|
||||
exponent,
|
||||
(UInt128)exponent << 1,
|
||||
lastIsSeven: true,
|
||||
perSetLimit: (UInt128)10UL,
|
||||
setCount: UInt128.One,
|
||||
overallLimit: (UInt128)10UL,
|
||||
ref isPrime,
|
||||
ref exhausted);
|
||||
|
||||
isPrime.Should().BeFalse();
|
||||
exhausted.Should().BeTrue();
|
||||
}
|
||||
finally
|
||||
{
|
||||
tableField.SetValue(cycles, originalTable);
|
||||
smallCyclesField.SetValue(cycles, backupSmall);
|
||||
GpuContextPool.DisposeAll();
|
||||
}
|
||||
}
|
||||
finally
|
||||
{
|
||||
File.Delete(tempPath);
|
||||
}
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(false)]
|
||||
[InlineData(true)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Mersenne_tester_residue_gpu_handles_known_primes_with_many_sets(bool useGpuOrder)
|
||||
{
|
||||
var tester = new MersenneNumberTester(
|
||||
useIncremental: true,
|
||||
useOrderCache: false,
|
||||
kernelType: GpuKernelType.Pow2Mod,
|
||||
useModuloWorkaround: false,
|
||||
useOrder: false,
|
||||
useGpuLucas: false,
|
||||
useGpuScan: true,
|
||||
useGpuOrder: useGpuOrder,
|
||||
useResidue: true,
|
||||
maxK: (UInt128)2_400_000UL,
|
||||
residueDivisorSets: (UInt128)512UL);
|
||||
|
||||
try
|
||||
{
|
||||
bool isPrime = tester.IsMersennePrime(127UL, out bool divisorsExhausted);
|
||||
|
||||
isPrime.Should().BeTrue();
|
||||
divisorsExhausted.Should().BeTrue();
|
||||
}
|
||||
finally
|
||||
{
|
||||
GpuContextPool.DisposeAll();
|
||||
}
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(false)]
|
||||
[InlineData(true)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_recognizes_all_known_small_mersenne_primes(bool useGpuOrder)
|
||||
{
|
||||
var tester = new MersenneNumberResidueGpuTester(useGpuOrder);
|
||||
|
||||
foreach (ulong exponent in MersennePrimeTestData.Exponents)
|
||||
{
|
||||
RunCase(tester, exponent, 1UL, expectedPrime: true);
|
||||
}
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(31UL)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_matches_cli_residue_configuration_for_primes(ulong exponent)
|
||||
{
|
||||
RunCliCase(useGpuOrder: false, exponent);
|
||||
RunCliCase(useGpuOrder: true, exponent);
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(31UL, 1_024UL, 1UL)]
|
||||
[InlineData(31UL, 256UL, 4UL)]
|
||||
[InlineData(107UL, 512UL, 1UL)]
|
||||
[InlineData(107UL, 128UL, 4UL)]
|
||||
[InlineData(107UL, 15_625UL, 64UL)]
|
||||
[InlineData(127UL, 512UL, 1UL)]
|
||||
[InlineData(127UL, 128UL, 4UL)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_handles_multiple_residue_sets_for_known_primes(ulong exponent, ulong perSetLimit, ulong setCount)
|
||||
{
|
||||
ulong overallLimit = perSetLimit * setCount;
|
||||
|
||||
RunCase(new MersenneNumberResidueGpuTester(useGpuOrder: false), exponent, perSetLimit, setCount, overallLimit, expectedPrime: true);
|
||||
RunCase(new MersenneNumberResidueGpuTester(useGpuOrder: true), exponent, perSetLimit, setCount, overallLimit, expectedPrime: true);
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(107UL, 1UL, 1_024UL)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_handles_single_lane_sets_for_known_primes(ulong exponent, ulong perSetLimit, ulong overallLimit)
|
||||
{
|
||||
ulong setCount = overallLimit;
|
||||
|
||||
RunCase(new MersenneNumberResidueGpuTester(useGpuOrder: false), exponent, perSetLimit, setCount, overallLimit, expectedPrime: true);
|
||||
RunCase(new MersenneNumberResidueGpuTester(useGpuOrder: true), exponent, perSetLimit, setCount, overallLimit, expectedPrime: true);
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(false)]
|
||||
[InlineData(true)]
|
||||
[Trait("Category", "Fast")]
|
||||
public void Scan_handles_multiple_sets_without_false_positives(bool useGpuOrder)
|
||||
{
|
||||
var tester = new MersenneNumberResidueGpuTester(useGpuOrder);
|
||||
|
||||
bool isPrime = true;
|
||||
bool exhausted = false;
|
||||
UInt128 perSetLimit = 1_666_667UL;
|
||||
UInt128 setCount = 3UL;
|
||||
UInt128 overallLimit = 5_000_000UL;
|
||||
|
||||
tester.Scan(
|
||||
127UL,
|
||||
(UInt128)127UL << 1,
|
||||
LastDigitIsSeven(127UL),
|
||||
perSetLimit,
|
||||
setCount,
|
||||
overallLimit,
|
||||
ref isPrime,
|
||||
ref exhausted);
|
||||
|
||||
isPrime.Should().BeTrue();
|
||||
exhausted.Should().BeTrue();
|
||||
|
||||
isPrime = true;
|
||||
exhausted = false;
|
||||
perSetLimit = 20_000_000UL;
|
||||
setCount = 5UL;
|
||||
overallLimit = 100_000_000UL;
|
||||
|
||||
tester.Scan(
|
||||
107UL,
|
||||
(UInt128)107UL << 1,
|
||||
LastDigitIsSeven(107UL),
|
||||
perSetLimit,
|
||||
setCount,
|
||||
overallLimit,
|
||||
ref isPrime,
|
||||
ref exhausted);
|
||||
|
||||
isPrime.Should().BeTrue();
|
||||
exhausted.Should().BeTrue();
|
||||
}
|
||||
|
||||
private static void RunCliCase(bool useGpuOrder, ulong exponent)
|
||||
{
|
||||
var tester = new MersenneNumberResidueGpuTester(useGpuOrder);
|
||||
RunCase(tester, exponent, 8UL, expectedPrime: true);
|
||||
}
|
||||
|
||||
private static void RunCase(MersenneNumberResidueGpuTester tester, ulong exponent, ulong maxK, bool expectedPrime)
|
||||
{
|
||||
RunCase(tester, exponent, maxK, 1UL, maxK, expectedPrime);
|
||||
}
|
||||
|
||||
private static void RunCase(
|
||||
MersenneNumberResidueGpuTester tester,
|
||||
ulong exponent,
|
||||
ulong perSetLimit,
|
||||
ulong setCount,
|
||||
ulong overallLimit,
|
||||
bool expectedPrime)
|
||||
{
|
||||
bool isPrime = true;
|
||||
tester.Scan(exponent, (UInt128)exponent << 1, LastDigitIsSeven(exponent), (UInt128)maxK, ref isPrime);
|
||||
isPrime.Should().Be(expectedPrime);
|
||||
}
|
||||
}
|
||||
|
||||
Reference in new issue
Block a user