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Merge pull request #225 from mlemanczyk/codex/analyze-evenperfectbitscanner-for-gpu-optimization

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Add GPU candidate generation for divisor scanning
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Marek Lemańczyk authored and GitHub committed 2025-10-23 00:52:59 +02:00
2 parents 6c3efb90c9 ea01585892
commit dda53581c0
3 files changed
+409 -116
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PerfectNumbers.Core.Tests/MersenneNumberDivisorGpuTesterTests.cs
+2 -22
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@@ -197,17 +197,7 @@ public class MersenneNumberDivisorGpuTesterTests
session.CheckDivisor(7UL, divisorData, cycle, exponents, hits);
var hostBufferField = typeof(MersenneNumberDivisorByDivisorGpuTester.DivisorScanSession)
.GetField("_hostBuffer", BindingFlags.NonPublic | BindingFlags.Instance)!;
ulong[] hostBuffer = (ulong[])hostBufferField.GetValue(session)!;
Span<ulong> residues = hostBuffer.AsSpan(0, exponents.Length);
byte[] computedHits = new byte[exponents.Length];
for (int i = 0; i < residues.Length; i++)
{
computedHits[i] = residues[i] == divisorData.MontgomeryOne ? (byte)1 : (byte)0;
}
computedHits.Should().Equal(new byte[] { 1, 0, 1, 0, 1 });
hits.Should().Equal(new byte[] { 1, 0, 1, 0, 1 });
}
[Fact]
@@ -229,17 +219,7 @@ public class MersenneNumberDivisorGpuTesterTests
session.CheckDivisor(11UL, divisorData, cycle, exponents, hits);
var hostBufferField = typeof(MersenneNumberDivisorByDivisorGpuTester.DivisorScanSession)
.GetField("_hostBuffer", BindingFlags.NonPublic | BindingFlags.Instance)!;
ulong[] hostBuffer = (ulong[])hostBufferField.GetValue(session)!;
Span<ulong> residues = hostBuffer.AsSpan(0, exponents.Length);
byte[] computedHits = new byte[exponents.Length];
for (int i = 0; i < residues.Length; i++)
{
computedHits[i] = residues[i] == divisorData.MontgomeryOne ? (byte)1 : (byte)0;
}
computedHits.Should().Equal(new byte[] { 1, 0, 1, 0, 1 });
hits.Should().Equal(new byte[] { 1, 0, 1, 0, 1 });
}
[Fact]