mlemanczyk/even-perfect-numbers-scanner
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Pow2Mod kernel specific methods moved to Pow2MontgomeryKernels.

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mlemanczyk committed 2025-11-24 18:04:07 +01:00
1 parent 070e2a14fd
commit 57a50e2a37
14 files changed
+419 -402
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PerfectNumbers.Core/Gpu/Kernels/PrimeTesterKernels.cs
+4 -15
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@@ -86,28 +86,17 @@ internal static class PrimeTesterKernels
ulong maxDivisorSquare,
HeuristicCombinedGpuViews tables)
{
// byte nMod10 = (byte)(n % 10UL);
ArrayView1D<ulong, Stride1D.Dense> divisors = tables.SelectDivisors(nMod10);
ArrayView1D<ulong, Stride1D.Dense> divisorSquares = tables.SelectDivisorSquares(nMod10);
var (divisors, divisorSquares) = tables.SelectDivisorsAndSquares(nMod10);
int divisorLength = (int)divisorSquares.Length;
int threadIndex = index;
if (threadIndex >= divisorLength)
if (divisorSquares[threadIndex] > maxDivisorSquare)
{
return;
}
ulong divisorSquare = divisorSquares[threadIndex];
if (divisorSquare > maxDivisorSquare)
if (n % divisors[threadIndex] == 0UL)
{
return;
}
ulong divisor = divisors[threadIndex];
divisor = n % divisor;
if (divisor == 0UL)
{
resultFlag[0] = 1;
Atomic.Exchange(ref resultFlag[0], 1);
}
}