mlemanczyk/even-perfect-numbers-scanner
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Various improvements to make sure scratch buffers don't override each others memory

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mlemanczyk committed 2025-11-03 23:49:55 +01:00
1 parent dcda4b5cba
commit fc22c01ec8
16 files changed
+489 -565
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PerfectNumbers.Core/PrimeOrderCalculator.Gpu.cs
+4 -5
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@@ -25,8 +25,8 @@ internal static partial class PrimeOrderCalculator
Accelerator accelerator = lease.Accelerator;
AcceleratorStream stream = lease.Stream;
SmallPrimeFactorTables tables = GpuKernelPool.EnsureSmallPrimeFactorTables(accelerator);
SmallPrimeFactorScratch scratch = GpuKernelPool.EnsureSmallPrimeFactorScratch(accelerator, GpuSmallPrimeFactorSlots);
SmallPrimeFactorTables tables = GpuKernelPool.EnsureSmallPrimeFactorTables(lease.Kernels, accelerator);
SmallPrimeFactorScratch scratch = GpuKernelPool.EnsureSmallPrimeFactorScratch(lease.Kernels, accelerator, GpuSmallPrimeFactorSlots);
var kernel = lease.SmallPrimeFactorKernel;
kernel(
@@ -92,7 +92,7 @@ internal static partial class PrimeOrderCalculator
Accelerator accelerator = lease.Accelerator;
AcceleratorStream stream = lease.Stream;
SpecialMaxScratch scratch = GpuKernelPool.EnsureSpecialMaxScratch(accelerator, factorCount);
SpecialMaxScratch scratch = GpuKernelPool.EnsureSpecialMaxScratch(lease.Kernels, accelerator, factorCapacity: factorCount);
scratch.FactorsView.SubView(0, factorCount).CopyFromCPU(ref MemoryMarshal.GetReference(factorSpan), factorCount);
@@ -109,9 +109,8 @@ internal static partial class PrimeOrderCalculator
stream.Synchronize();
byte result = 0;
ushort result = 0;
scratch.ResultView.CopyToCPU(ref result, 1);
lease.Dispose();
return result != 0;