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Marek Lemańczyk committed
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@@ -330,26 +330,26 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
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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 MemoryBuffer1D<ulong, Stride1D.Dense> _exponentsBuffer;
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private MemoryBuffer1D<ulong, Stride1D.Dense> _resultsBuffer;
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private ulong[] _hostBuffer;
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private int[] _positionBuffer;
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private int _capacity;
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private bool _disposed;
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private readonly Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> _kernel;
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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 ulong[] _hostBuffer;
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private int[] _positionBuffer;
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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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_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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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.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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_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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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.Shared.Rent(_capacity);
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}
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internal void Reset()
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{
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@@ -365,15 +365,15 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
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_exponentsBuffer.Dispose();
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_resultsBuffer.Dispose();
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ArrayPool<ulong>.Shared.Return(_hostBuffer, clearArray: false);
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ArrayPool<int>.Shared.Return(_positionBuffer, clearArray: false);
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ArrayPool<ulong>.Shared.Return(_hostBuffer, clearArray: false);
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ArrayPool<int>.Shared.Return(_positionBuffer, 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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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.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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_hostBuffer = ArrayPool<ulong>.Shared.Rent(_capacity);
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_positionBuffer = ArrayPool<int>.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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@@ -397,56 +397,56 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
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Accelerator accelerator = _accelerator;
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Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> kernel = _kernel;
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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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Action<Index1D, MontgomeryDivisorData, ArrayView<ulong>, ArrayView<ulong>> kernel = _kernel;
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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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Span<ulong> hostSpan = _hostBuffer.AsSpan();
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Span<int> positionSpan = _positionBuffer.AsSpan();
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Span<ulong> hostSpan = _hostBuffer.AsSpan();
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Span<int> positionSpan = _positionBuffer.AsSpan();
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int offset = 0;
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bool cycleEnabled = owner._useDivisorCycles;
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int offset = 0;
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bool cycleEnabled = owner._useDivisorCycles;
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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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Span<byte> hitsSlice = hits.Slice(offset, batchSize);
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int computeCount = 0;
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int computeCount = 0;
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if (cycleEnabled && divisorCycle != 0UL)
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{
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for (int i = 0; i < batchSize; i++)
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{
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ulong residue = primesSlice[i] % divisorCycle;
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if (residue != 0UL)
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{
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hitsSlice[i] = 0;
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continue;
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}
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if (cycleEnabled && divisorCycle != 0UL)
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{
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for (int i = 0; i < batchSize; i++)
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{
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ulong residue = primesSlice[i] % divisorCycle;
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if (residue != 0UL)
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{
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hitsSlice[i] = 0;
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continue;
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}
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hostSpan[computeCount] = residue;
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positionSpan[computeCount] = i;
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computeCount++;
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}
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}
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else
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{
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for (int i = 0; i < batchSize; i++)
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{
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hostSpan[computeCount] = primesSlice[i];
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positionSpan[computeCount] = i;
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computeCount++;
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}
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}
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hostSpan[computeCount] = residue;
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positionSpan[computeCount] = i;
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computeCount++;
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}
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}
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else
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{
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for (int i = 0; i < batchSize; i++)
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{
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hostSpan[computeCount] = primesSlice[i];
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positionSpan[computeCount] = i;
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computeCount++;
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}
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}
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if (computeCount > 0)
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{
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Span<ulong> exponentSlice = hostSpan[..computeCount];
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if (computeCount > 0)
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{
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Span<ulong> exponentSlice = hostSpan[..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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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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@@ -457,11 +457,11 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
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ulong residue = exponentSlice[i];
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hitsSlice[position] = residue == 1UL ? (byte)1 : (byte)0;
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}
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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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@@ -482,9 +482,9 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester : IMersenneNumberDiv
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_sessionPool.Add(session);
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}
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private static void ComputePrimeExponentKernel(Index1D index, MontgomeryDivisorData divisor, ArrayView<ulong> exponents, ArrayView<ulong> results)
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{
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ulong modulus = divisor.Modulus;
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private static void ComputePrimeExponentKernel(Index1D index, MontgomeryDivisorData divisor, ArrayView<ulong> exponents, ArrayView<ulong> results)
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{
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ulong modulus = divisor.Modulus;
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if (modulus <= 1UL || (modulus & 1UL) == 0UL)
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{
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results[index] = 0UL;
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