mlemanczyk/even-perfect-numbers-scanner
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Extension methods benchmarked. Slower alternatives replaced.

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Marek Lemańczyk committed 2025-09-23 22:01:09 +02:00
1 parent 9becb8df67
commit 6e99ee39e3
40 files changed
+930 -1026
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PerfectNumbers.Core/Gpu/GpuKernelPool.cs
+10 -11
View File
@@ -1,6 +1,5 @@
using System.Collections.Concurrent;
using System.Runtime.CompilerServices;
using System.Threading;
using ILGPU;
using ILGPU.Runtime;
using static PerfectNumbers.Core.Gpu.GpuContextPool;
@@ -200,8 +199,8 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
ArrayView1D<uint, Stride1D.Dense> smallCycles)
{
ulong idx = (ulong)index.X;
ulong idxMod3 = idx.Mod3();
ulong idxMod5 = idx.Mod5();
ulong idxMod3 = idx % 3UL;
ulong idxMod5 = idx % 5UL;
// residue automaton
ulong step10 = (exponent.Mod10() << 1).Mod10();
ulong r10 = q0m10 + (step10 * idx).Mod10();
@@ -217,7 +216,7 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
}
else
{
ulong step3 = (exponent.Mod3() << 1).Mod3();
ulong step3 = ((exponent % 3UL) << 1) % 3UL;
ulong r3 = q0m3 + (step3 * idxMod3); r3 -= (r3 >= 3UL) ? 3UL : 0UL;
if (r3 == 0UL)
{
@@ -225,7 +224,7 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
}
else
{
ulong step5Loc = (exponent.Mod5() << 1).Mod5();
ulong step5Loc = ((exponent % 5UL) << 1) % 5UL;
ulong r5 = q0m5 + (step5Loc * idxMod5); if (r5 >= 5UL) r5 -= 5UL;
if (r5 == 0UL)
{
@@ -360,8 +359,8 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
ArrayView1D<ulong, Stride1D.Dense> smallPrimesPow2LastSeven)
{
ulong idx = (ulong)index.X;
ulong idxMod3 = idx.Mod3();
ulong idxMod5 = idx.Mod5();
ulong idxMod3 = idx % 3UL;
ulong idxMod5 = idx % 5UL;
ulong r10 = ra.Q0M10 + (ra.Step10 * idx).Mod10(); r10 -= (r10 >= 10UL) ? 10UL : 0UL;
bool shouldCheck = r10 != 5UL;
if (shouldCheck)
@@ -493,8 +492,8 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
ResidueAutomatonArgs ra, ArrayView<int> found, ArrayView1D<uint, Stride1D.Dense> smallCycles)
{
ulong idx = (ulong)index.X;
ulong idxMod3 = idx.Mod3();
ulong idxMod5 = idx.Mod5();
ulong idxMod3 = idx % 3UL;
ulong idxMod5 = idx % 5UL;
ulong r10 = ra.Q0M10 + (ra.Step10 * idx).Mod10(); r10 -= (r10 >= 10UL) ? 10UL : 0UL;
bool shouldCheck = r10 != 5UL;
if (shouldCheck)
@@ -579,8 +578,8 @@ public ref struct GpuKernelLease(IDisposable limiter, GpuContextLease gpu, Kerne
ResidueAutomatonArgs ra, ArrayView<int> found, ArrayView1D<uint, Stride1D.Dense> smallCycles)
{
ulong idx = (ulong)index.X;
ulong idxMod3 = idx.Mod3();
ulong idxMod5 = idx.Mod5();
ulong idxMod3 = idx % 3UL;
ulong idxMod5 = idx % 5UL;
ulong r10 = ra.Q0M10 + (ra.Step10 * idx).Mod10(); r10 -= (r10 >= 10UL) ? 10UL : 0UL;
bool shouldCheck = r10 != 5UL;
if (shouldCheck)