Tiny cleanup
This commit is contained in:
Marek Lemańczyk committed
1 parent
f8867205bf
commit
c2b57ae13d
1 file changed
+212
-212
@@ -27,17 +27,17 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester
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}
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private readonly ConcurrentDictionary<Accelerator, Action<Index1D, ulong, byte, ArrayView<MontgomeryDivisorData>, ArrayView<byte>>> _kernelCache = new();
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private readonly ConcurrentDictionary<Accelerator, Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>>> _kernelExponentCache = new();
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private readonly ConcurrentDictionary<Accelerator, ConcurrentBag<BatchResources>> _resourcePools = new(AcceleratorReferenceComparer.Instance);
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private readonly ConcurrentDictionary<Accelerator, Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>>> _cycleKernelCache = new();
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private readonly ConcurrentDictionary<Accelerator, Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>>> _kernelExponentCache = new();
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private readonly ConcurrentDictionary<Accelerator, ConcurrentBag<BatchResources>> _resourcePools = new(AcceleratorReferenceComparer.Instance);
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private readonly ConcurrentDictionary<Accelerator, Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>>> _cycleKernelCache = new();
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private readonly ConcurrentBag<DivisorScanSession> _sessionPool = new();
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private Action<Index1D, ulong, byte, ArrayView<MontgomeryDivisorData>, ArrayView<byte>> GetKernel(Accelerator accelerator) =>
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_kernelCache.GetOrAdd(accelerator, acc => acc.LoadAutoGroupedStreamKernel<Index1D, ulong, byte, ArrayView<MontgomeryDivisorData>, ArrayView<byte>>(CheckKernel));
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private Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> GetKernelByPrimeExponent(Accelerator accelerator) =>
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_kernelExponentCache.GetOrAdd(accelerator, acc => acc.LoadAutoGroupedStreamKernel<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>>(ComputePrimeExponentKernel));
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private Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> GetCycleKernel(Accelerator accelerator) =>
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_cycleKernelCache.GetOrAdd(accelerator, acc => acc.LoadAutoGroupedStreamKernel<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>>(CheckPrimeCycleKernel));
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private Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> GetKernelByPrimeExponent(Accelerator accelerator) =>
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_kernelExponentCache.GetOrAdd(accelerator, acc => acc.LoadAutoGroupedStreamKernel<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>>(ComputePrimeExponentKernel));
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private Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> GetCycleKernel(Accelerator accelerator) =>
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_cycleKernelCache.GetOrAdd(accelerator, acc => acc.LoadAutoGroupedStreamKernel<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>>(CheckPrimeCycleKernel));
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public int GpuBatchSize
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{
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@@ -340,253 +340,253 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester
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public sealed class DivisorScanSession : IDisposable
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{
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private readonly MersenneNumberDivisorByDivisorGpuTester _owner;
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private readonly GpuContextPool.GpuContextLease _lease;
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private readonly Accelerator _accelerator;
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private readonly Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> _kernel;
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private readonly Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> _cycleKernel;
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private MemoryBuffer1D<ulong, Stride1D.Dense> _exponentsBuffer;
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private MemoryBuffer1D<ulong, Stride1D.Dense> _resultsBuffer;
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private MemoryBuffer1D<byte, Stride1D.Dense> _cycleMaskBuffer;
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private ulong[] _hostBuffer;
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private ulong[] _primeBuffer;
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private int[] _positionBuffer;
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private byte[] _cycleMaskHost;
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private int _capacity;
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private bool _disposed;
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private readonly MersenneNumberDivisorByDivisorGpuTester _owner;
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private readonly GpuContextPool.GpuContextLease _lease;
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private readonly Accelerator _accelerator;
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private readonly Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> _kernel;
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private readonly Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> _cycleKernel;
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private MemoryBuffer1D<ulong, Stride1D.Dense> _exponentsBuffer;
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private MemoryBuffer1D<ulong, Stride1D.Dense> _resultsBuffer;
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private MemoryBuffer1D<byte, Stride1D.Dense> _cycleMaskBuffer;
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private ulong[] _hostBuffer;
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private ulong[] _primeBuffer;
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private int[] _positionBuffer;
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private byte[] _cycleMaskHost;
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private int _capacity;
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private bool _disposed;
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internal DivisorScanSession(MersenneNumberDivisorByDivisorGpuTester owner)
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{
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_owner = owner;
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_lease = GpuContextPool.RentPreferred(preferCpu: false);
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_accelerator = _lease.Accelerator;
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_kernel = owner.GetKernelByPrimeExponent(_accelerator);
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_cycleKernel = owner.GetCycleKernel(_accelerator);
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_capacity = Math.Max(1, owner._gpuBatchSize);
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_exponentsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_resultsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_cycleMaskBuffer = _accelerator.Allocate1D<byte>(_capacity);
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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_primeBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.Shared.Rent(_capacity);
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_cycleMaskHost = ArrayPool<byte>.Shared.Rent(_capacity);
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}
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internal DivisorScanSession(MersenneNumberDivisorByDivisorGpuTester owner)
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{
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_owner = owner;
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_lease = GpuContextPool.RentPreferred(preferCpu: false);
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_accelerator = _lease.Accelerator;
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_kernel = owner.GetKernelByPrimeExponent(_accelerator);
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_cycleKernel = owner.GetCycleKernel(_accelerator);
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_capacity = Math.Max(1, owner._gpuBatchSize);
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_exponentsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_resultsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_cycleMaskBuffer = _accelerator.Allocate1D<byte>(_capacity);
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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_primeBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.Shared.Rent(_capacity);
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_cycleMaskHost = ArrayPool<byte>.Shared.Rent(_capacity);
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}
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internal void Reset()
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{
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_disposed = false;
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internal void Reset()
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{
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_disposed = false;
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}
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private void EnsureCapacity(int requiredCapacity)
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{
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if (requiredCapacity <= _capacity)
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{
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return;
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}
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if (requiredCapacity <= _capacity)
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{
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return;
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}
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_exponentsBuffer.Dispose();
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_resultsBuffer.Dispose();
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_cycleMaskBuffer.Dispose();
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ArrayPool<ulong>.Shared.Return(_hostBuffer, clearArray: false);
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ArrayPool<ulong>.Shared.Return(_primeBuffer, clearArray: false);
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ArrayPool<int>.Shared.Return(_positionBuffer, clearArray: false);
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ArrayPool<byte>.Shared.Return(_cycleMaskHost, clearArray: false);
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_exponentsBuffer.Dispose();
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_resultsBuffer.Dispose();
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_cycleMaskBuffer.Dispose();
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ArrayPool<ulong>.Shared.Return(_hostBuffer, clearArray: false);
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ArrayPool<ulong>.Shared.Return(_primeBuffer, clearArray: false);
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ArrayPool<int>.Shared.Return(_positionBuffer, clearArray: false);
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ArrayPool<byte>.Shared.Return(_cycleMaskHost, clearArray: false);
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_capacity = requiredCapacity;
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_exponentsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_resultsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_cycleMaskBuffer = _accelerator.Allocate1D<byte>(_capacity);
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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_primeBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.Shared.Rent(_capacity);
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_cycleMaskHost = ArrayPool<byte>.Shared.Rent(_capacity);
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}
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_capacity = requiredCapacity;
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_exponentsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_resultsBuffer = _accelerator.Allocate1D<ulong>(_capacity);
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_cycleMaskBuffer = _accelerator.Allocate1D<byte>(_capacity);
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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_primeBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.Shared.Rent(_capacity);
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_cycleMaskHost = ArrayPool<byte>.Shared.Rent(_capacity);
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}
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public void CheckDivisor(ulong divisor, ulong divisorCycle, ReadOnlySpan<ulong> primes, Span<byte> hits)
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{
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if (_disposed)
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{
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throw new ObjectDisposedException(nameof(DivisorScanSession));
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}
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public void CheckDivisor(ulong divisor, ulong divisorCycle, ReadOnlySpan<ulong> primes, Span<byte> hits)
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{
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if (_disposed)
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{
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throw new ObjectDisposedException(nameof(DivisorScanSession));
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}
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int primesLength = primes.Length;
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if (primesLength == 0)
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{
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return;
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}
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int primesLength = primes.Length;
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if (primesLength == 0)
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{
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return;
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}
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MersenneNumberDivisorByDivisorGpuTester owner = _owner;
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int gpuBatchSize = owner._gpuBatchSize;
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EnsureCapacity(gpuBatchSize);
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MersenneNumberDivisorByDivisorGpuTester owner = _owner;
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int gpuBatchSize = owner._gpuBatchSize;
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EnsureCapacity(gpuBatchSize);
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MontgomeryDivisorData divisorData = CreateMontgomeryDivisorData(divisor);
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ulong modulus = divisorData.Modulus;
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if (modulus <= 1UL || (modulus & 1UL) == 0UL)
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{
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return;
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}
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MontgomeryDivisorData divisorData = CreateMontgomeryDivisorData(divisor);
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ulong modulus = divisorData.Modulus;
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if (modulus <= 1UL || (modulus & 1UL) == 0UL)
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{
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return;
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}
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bool cycleEnabled = owner._useDivisorCycles && divisorCycle != 0UL;
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bool cycleEnabled = owner._useDivisorCycles && divisorCycle != 0UL;
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Accelerator accelerator = _accelerator;
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Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> kernel = _kernel;
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Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> cycleKernel = _cycleKernel;
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ArrayView1D<ulong, Stride1D.Dense> exponentsView = _exponentsBuffer.View;
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ArrayView1D<ulong, Stride1D.Dense> resultsView = _resultsBuffer.View;
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ArrayView1D<byte, Stride1D.Dense> cycleMaskViewFull = _cycleMaskBuffer.View;
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Accelerator accelerator = _accelerator;
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Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> kernel = _kernel;
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Action<Index1D, ulong, ArrayView<ulong>, ArrayView<byte>> cycleKernel = _cycleKernel;
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ArrayView1D<ulong, Stride1D.Dense> exponentsView = _exponentsBuffer.View;
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ArrayView1D<ulong, Stride1D.Dense> resultsView = _resultsBuffer.View;
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ArrayView1D<byte, Stride1D.Dense> cycleMaskViewFull = _cycleMaskBuffer.View;
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int offset = 0;
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Span<ulong> hostSpan = _hostBuffer.AsSpan();
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Span<ulong> primeSpan = _primeBuffer.AsSpan();
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Span<int> positionSpan = _positionBuffer.AsSpan();
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bool hasPreviousResidue = false;
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ulong previousResidue = 0UL;
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ulong previousPrime = 0UL;
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int offset = 0;
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Span<ulong> hostSpan = _hostBuffer.AsSpan();
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Span<ulong> primeSpan = _primeBuffer.AsSpan();
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Span<int> positionSpan = _positionBuffer.AsSpan();
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bool hasPreviousResidue = false;
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ulong previousResidue = 0UL;
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ulong previousPrime = 0UL;
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while (offset < primesLength)
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{
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int batchSize = Math.Min(gpuBatchSize, primesLength - offset);
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ReadOnlySpan<ulong> primesSlice = primes.Slice(offset, batchSize);
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Span<byte> hitsSlice = hits.Slice(offset, batchSize);
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while (offset < primesLength)
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{
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int batchSize = Math.Min(gpuBatchSize, primesLength - offset);
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ReadOnlySpan<ulong> primesSlice = primes.Slice(offset, batchSize);
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Span<byte> hitsSlice = hits.Slice(offset, batchSize);
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int computeCount = 0;
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Span<byte> cycleMaskSpan = default;
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int computeCount = 0;
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Span<byte> cycleMaskSpan = default;
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if (cycleEnabled)
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{
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cycleMaskSpan = _cycleMaskHost.AsSpan(0, batchSize);
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ArrayView1D<ulong, Stride1D.Dense> primeInputView = _resultsBuffer.View.SubView(0, batchSize);
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primeInputView.CopyFromCPU(ref MemoryMarshal.GetReference(primesSlice), batchSize);
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ArrayView1D<byte, Stride1D.Dense> cycleMaskView = cycleMaskViewFull.SubView(0, batchSize);
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cycleKernel(batchSize, divisorCycle, primeInputView, cycleMaskView);
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accelerator.Synchronize();
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cycleMaskView.CopyToCPU(ref MemoryMarshal.GetReference(cycleMaskSpan), batchSize);
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}
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if (cycleEnabled)
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{
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cycleMaskSpan = _cycleMaskHost.AsSpan(0, batchSize);
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ArrayView1D<ulong, Stride1D.Dense> primeInputView = _resultsBuffer.View.SubView(0, batchSize);
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primeInputView.CopyFromCPU(ref MemoryMarshal.GetReference(primesSlice), batchSize);
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ArrayView1D<byte, Stride1D.Dense> cycleMaskView = cycleMaskViewFull.SubView(0, batchSize);
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cycleKernel(batchSize, divisorCycle, primeInputView, cycleMaskView);
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accelerator.Synchronize();
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cycleMaskView.CopyToCPU(ref MemoryMarshal.GetReference(cycleMaskSpan), batchSize);
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}
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for (int i = 0; i < batchSize; i++)
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{
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if (cycleEnabled && cycleMaskSpan[i] == 0)
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{
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hitsSlice[i] = 0;
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continue;
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}
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for (int i = 0; i < batchSize; i++)
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{
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if (cycleEnabled && cycleMaskSpan[i] == 0)
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{
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hitsSlice[i] = 0;
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continue;
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}
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ulong prime = primesSlice[i];
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primeSpan[computeCount] = prime;
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positionSpan[computeCount] = i;
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computeCount++;
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}
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ulong prime = primesSlice[i];
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primeSpan[computeCount] = prime;
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positionSpan[computeCount] = i;
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computeCount++;
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}
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if (computeCount > 0)
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{
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Span<ulong> exponentSlice = hostSpan.Slice(0, computeCount);
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ulong currentPrime = hasPreviousResidue ? previousPrime : 0UL;
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bool hasDeltaSource = hasPreviousResidue;
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if (computeCount > 0)
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{
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Span<ulong> exponentSlice = hostSpan[..computeCount];
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ulong currentPrime = hasPreviousResidue ? previousPrime : 0UL;
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bool hasDeltaSource = hasPreviousResidue;
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for (int i = 0; i < computeCount; i++)
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{
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ulong prime = primeSpan[i];
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if (hasDeltaSource)
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{
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exponentSlice[i] = prime - currentPrime;
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}
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else
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{
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exponentSlice[i] = prime;
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hasDeltaSource = true;
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}
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for (int i = 0; i < computeCount; i++)
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{
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ulong prime = primeSpan[i];
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if (hasDeltaSource)
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{
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exponentSlice[i] = prime - currentPrime;
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}
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else
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{
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exponentSlice[i] = prime;
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hasDeltaSource = true;
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}
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currentPrime = prime;
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}
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currentPrime = prime;
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}
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ArrayView1D<ulong, Stride1D.Dense> exponentView = exponentsView.SubView(0, computeCount);
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exponentView.CopyFromCPU(ref MemoryMarshal.GetReference(exponentSlice), computeCount);
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ArrayView1D<ulong, Stride1D.Dense> resultView = resultsView.SubView(0, computeCount);
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kernel(computeCount, divisorData, exponentView, resultView);
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accelerator.Synchronize();
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resultView.CopyToCPU(ref MemoryMarshal.GetReference(exponentSlice), computeCount);
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ArrayView1D<ulong, Stride1D.Dense> exponentView = exponentsView.SubView(0, computeCount);
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exponentView.CopyFromCPU(ref MemoryMarshal.GetReference(exponentSlice), computeCount);
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ArrayView1D<ulong, Stride1D.Dense> resultView = resultsView.SubView(0, computeCount);
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kernel(computeCount, divisorData, exponentView, resultView);
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accelerator.Synchronize();
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resultView.CopyToCPU(ref MemoryMarshal.GetReference(exponentSlice), computeCount);
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ulong residueAccumulator = previousResidue;
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ulong lastPrime = previousPrime;
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bool hasAccumulator = hasPreviousResidue;
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ulong residueAccumulator = previousResidue;
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ulong lastPrime = previousPrime;
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bool hasAccumulator = hasPreviousResidue;
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for (int i = 0; i < computeCount; i++)
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{
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int position = positionSpan[i];
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ulong stepResidue = exponentSlice[i];
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ulong prime = primeSpan[i];
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ulong residue = hasAccumulator ? MultiplyMod(residueAccumulator, stepResidue, modulus) : stepResidue;
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hitsSlice[position] = residue == 1UL ? (byte)1 : (byte)0;
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exponentSlice[i] = residue;
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residueAccumulator = residue;
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lastPrime = prime;
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hasAccumulator = true;
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}
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for (int i = 0; i < computeCount; i++)
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{
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int position = positionSpan[i];
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ulong stepResidue = exponentSlice[i];
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ulong prime = primeSpan[i];
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ulong residue = hasAccumulator ? MultiplyMod(residueAccumulator, stepResidue, modulus) : stepResidue;
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hitsSlice[position] = residue == 1UL ? (byte)1 : (byte)0;
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exponentSlice[i] = residue;
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residueAccumulator = residue;
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lastPrime = prime;
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hasAccumulator = true;
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}
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if (hasAccumulator)
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{
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previousResidue = residueAccumulator;
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previousPrime = lastPrime;
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hasPreviousResidue = true;
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}
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}
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if (hasAccumulator)
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{
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previousResidue = residueAccumulator;
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previousPrime = lastPrime;
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hasPreviousResidue = true;
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}
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}
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offset += batchSize;
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}
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}
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offset += batchSize;
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}
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}
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public void Dispose()
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{
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if (_disposed)
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{
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return;
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}
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public void Dispose()
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{
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if (_disposed)
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{
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return;
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}
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_disposed = true;
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_owner.ReturnSession(this);
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}
|
||||
_disposed = true;
|
||||
_owner.ReturnSession(this);
|
||||
}
|
||||
|
||||
private static ulong MultiplyMod(ulong left, ulong right, ulong modulus)
|
||||
{
|
||||
if (modulus == 0UL)
|
||||
{
|
||||
return 0UL;
|
||||
}
|
||||
private static ulong MultiplyMod(ulong left, ulong right, ulong modulus)
|
||||
{
|
||||
if (modulus == 0UL)
|
||||
{
|
||||
return 0UL;
|
||||
}
|
||||
|
||||
UInt128 product = (UInt128)left * right;
|
||||
return (ulong)(product % modulus);
|
||||
}
|
||||
UInt128 product = (UInt128)left * right;
|
||||
return (ulong)(product % modulus);
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
internal void ReturnSession(DivisorScanSession session)
|
||||
{
|
||||
_sessionPool.Add(session);
|
||||
}
|
||||
|
||||
private static void CheckPrimeCycleKernel(Index1D index, ulong cycle, ArrayView<ulong> primes, ArrayView<byte> mask)
|
||||
{
|
||||
if (cycle == 0UL)
|
||||
{
|
||||
mask[index] = 1;
|
||||
return;
|
||||
}
|
||||
private static void CheckPrimeCycleKernel(Index1D index, ulong cycle, ArrayView<ulong> primes, ArrayView<byte> mask)
|
||||
{
|
||||
if (cycle == 0UL)
|
||||
{
|
||||
mask[index] = 1;
|
||||
return;
|
||||
}
|
||||
|
||||
mask[index] = primes[index] % cycle == 0UL ? (byte)1 : (byte)0;
|
||||
}
|
||||
mask[index] = primes[index] % cycle == 0UL ? (byte)1 : (byte)0;
|
||||
}
|
||||
|
||||
private static void ComputePrimeExponentKernel(Index1D index, MontgomeryDivisorData divisor, ArrayView<ulong> exponents, ArrayView<ulong> results)
|
||||
{
|
||||
ulong modulus = divisor.Modulus;
|
||||
if (modulus <= 1UL || (modulus & 1UL) == 0UL)
|
||||
{
|
||||
results[index] = 0UL;
|
||||
return;
|
||||
}
|
||||
private static void ComputePrimeExponentKernel(Index1D index, MontgomeryDivisorData divisor, ArrayView<ulong> exponents, ArrayView<ulong> results)
|
||||
{
|
||||
ulong modulus = divisor.Modulus;
|
||||
if (modulus <= 1UL || (modulus & 1UL) == 0UL)
|
||||
{
|
||||
results[index] = 0UL;
|
||||
return;
|
||||
}
|
||||
|
||||
ulong exponent = exponents[index];
|
||||
results[index] = exponent.Pow2MontgomeryMod(divisor);
|
||||
}
|
||||
ulong exponent = exponents[index];
|
||||
results[index] = exponent.Pow2MontgomeryMod(divisor);
|
||||
}
|
||||
|
||||
private static MontgomeryDivisorData CreateMontgomeryDivisorData(ulong modulus)
|
||||
{
|
||||
|
||||
Reference in new issue
Block a user