mlemanczyk/even-perfect-numbers-scanner
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Various optimizations and cleanups. "in" removed from GpuUInt128 to avoid defensive copies from IL.

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mlemanczyk committed 2025-10-10 09:26:25 +02:00
1 parent 70eca5126b
commit ca0cadc8a3
18 files changed
+565 -395
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PerfectNumbers.Core/Gpu/PrimeOrderGpuHeuristics.cs
+4 -4
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@@ -811,7 +811,7 @@ internal static partial class PrimeOrderGpuHeuristics
}
ulong reduced = phi / factor;
if (reduced.Pow2MontgomeryModWindowed(divisor, keepMontgomery: false) == 1UL)
if (reduced.Pow2MontgomeryModWindowedGpu(divisor, keepMontgomery: false) == 1UL)
{
return false;
}
@@ -1595,7 +1595,7 @@ internal static partial class PrimeOrderGpuHeuristics
private static bool Pow2EqualsOneKernel(ulong exponent, in MontgomeryDivisorData divisor)
{
return exponent.Pow2MontgomeryModWindowed(divisor, keepMontgomery: false) == 1UL;
return exponent.Pow2MontgomeryModWindowedGpu(divisor, keepMontgomery: false) == 1UL;
}
private static ulong CalculateByDoublingKernel(ulong prime)
@@ -1795,7 +1795,7 @@ internal static partial class PrimeOrderGpuHeuristics
return 0UL;
}
return exponent.Pow2MontgomeryModWindowed(divisorData, keepMontgomery: false);
return exponent.Pow2MontgomeryModWindowedGpu(divisorData, keepMontgomery: false);
}
private static Action<AcceleratorStream, Index1D, ArrayView1D<ulong, Stride1D.Dense>, MontgomeryDivisorData, ArrayView1D<ulong, Stride1D.Dense>> GetPow2ModKernel(Accelerator accelerator)
@@ -1811,7 +1811,7 @@ internal static partial class PrimeOrderGpuHeuristics
private static void Pow2ModKernel(Index1D index, ArrayView1D<ulong, Stride1D.Dense> exponents, MontgomeryDivisorData divisor, ArrayView1D<ulong, Stride1D.Dense> remainders)
{
ulong exponent = exponents[index];
remainders[index] = exponent.Pow2MontgomeryModWindowed(divisor, keepMontgomery: false);
remainders[index] = exponent.Pow2MontgomeryModWindowedGpu(divisor, keepMontgomery: false);
}
private static Action<AcceleratorStream, Index1D, ArrayView1D<GpuUInt128, Stride1D.Dense>, GpuUInt128, ArrayView1D<GpuUInt128, Stride1D.Dense>> GetPow2ModWideKernel(Accelerator accelerator)