mlemanczyk/even-perfect-numbers-scanner
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GPU stabilization improvements to prevent calculation crashes

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mlemanczyk committed 2025-11-09 21:52:16 +01:00
1 parent a338bb0d0b
commit d0b1639a5d
40 files changed
+2318 -1764
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PerfectNumbers.Core/Gpu/MersenneNumberIncrementalGpuTester.cs
+4 -4
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@@ -17,14 +17,14 @@ public class MersenneNumberIncrementalGpuTester(GpuKernelType kernelType, bool u
throw new NotImplementedException($"GPU incremental scanning requires the device cycle heuristics implementation (kernel: {_kernelType}, GPU order: {_useGpuOrder}).");
GpuPrimeWorkLimiter.Acquire();
var accelerator = SharedGpuContext.Accelerator;
var accelerator = AcceleratorPool.Shared.Rent();
var stream = accelerator.CreateStream();
int batchSize = GpuConstants.ScanBatchSize; // large batch improves GPU occupancy
UInt128 kStart = 1UL;
ulong divMul = (ulong)((((UInt128)1 << 64) - UInt128.One) / exponent) + 1UL;
byte last = lastDigit == LastDigit.Seven ? (byte)1 : (byte)0; // ILGPU kernels do not support bool parameters
KernelContainer kernels = GpuKernelPool.Kernels;
KernelContainer kernels = GpuKernelPool.GetOrAddKernels(accelerator, stream);
var pow2Kernel = kernels.Pow2Mod!;
var incKernel = kernels.Incremental!;
ulong step10 = (exponent.Mod10() << 1).Mod10();
@@ -32,11 +32,11 @@ public class MersenneNumberIncrementalGpuTester(GpuKernelType kernelType, bool u
ulong step3 = ((exponent % 3UL) << 1) % 3UL;
ulong step5 = ((exponent % 5UL) << 1) % 5UL;
GpuUInt128 twoPGpu = (GpuUInt128)twoP;
var smallCyclesView = GpuKernelPool.GetSmallCyclesOnDevice();
var smallCyclesView = GpuKernelPool.GetSmallCyclesOnDevice(kernels);
ResiduePrimeViews primeViews = default;
if (_kernelType == GpuKernelType.Pow2Mod)
{
primeViews = GpuKernelPool.GetSmallPrimesOnDevice();
primeViews = GpuKernelPool.GetSmallPrimesOnDevice(kernels);
}
var orderBuffer = accelerator.Allocate1D<ulong>(batchSize);