public static void Invoke(TSCudaContext context, CudaContext cudaContext, byte[] ptx, string baseName, params object[] args)
{
ThrowIfAnyTensorInvalid(args);
cudaContext.SetCurrent();
CudaDeviceProperties deviceInfo = context.DeviceInfoForContext(cudaContext);
IEnumerable <Tensor> allTensors = args.OfType <Tensor>();
Tensor firstTensor = allTensors.First();
long elementCount = firstTensor.ElementCount();
ApplySpecialization spec = new ApplySpecialization(allTensors.ToArray());
ConvertTensorArgs.Convert(cudaContext, spec.Use32BitIndices, args);
ManagedCuda.VectorTypes.dim3 block = ApplyUtils.GetApplyBlock();
ManagedCuda.VectorTypes.dim3 grid = ApplyUtils.GetApplyGrid(deviceInfo, elementCount);
string fullKernelName = PermutationGenerator.GetMangledName(baseName, spec);
CudaKernel kernel = context.KernelCache.Get(cudaContext, ptx, fullKernelName);
kernel.GridDimensions = grid;
kernel.BlockDimensions = block;
kernel.RunAsync(CUstream.NullStream, args);
}
public Tensor Scatter(Tensor result, Tensor src, int dim, Tensor indices)
{
TSCudaContext context = CudaHelpers.TSContextForTensor(src);
CudaContext cudaContext = context.CudaContextForTensor(src);
if (result == null)
{
throw new ArgumentNullException("result");
}
if (result.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException("result and src must have same number of dimensions");
}
if (dim < 0 && dim >= result.DimensionCount)
{
throw new ArgumentOutOfRangeException("dim");
}
if (indices.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException("src and indices must have same number of dimensions");
}
if (!src.IsSameSizeAs(indices))
{
throw new InvalidOperationException("src and indices must be the same size");
}
if (!TensorResultBuilder.ArrayEqualExcept(src.Sizes, result.Sizes, dim))
{
throw new InvalidOperationException("result and src must be the same size except in dimension dim");
}
Tensor writeTarget = result;
long nElement = indices.ElementCount();
dim3 block = ApplyUtils.GetApplyBlock();
dim3 grid = ApplyUtils.GetApplyGrid(context.DeviceInfoForContext(cudaContext), nElement);
if (ApplyUtils.CanUse32BitIndexMath(writeTarget) &&
ApplyUtils.CanUse32BitIndexMath(src) &&
ApplyUtils.CanUse32BitIndexMath(indices))
{
int dims = indices.DimensionCount <= 3 ? indices.DimensionCount : -1;
string kernelName = MakeKernelName(ScatterBaseName, true, dims);
Invoke(context, cudaContext, kernelName, grid, block, 0, CUstream.NullStream, true,
writeTarget, src, indices, dim, (int)nElement);
}
else
{
string kernelName = MakeKernelName(ScatterBaseName, false, -1);
Invoke(context, cudaContext, kernelName, grid, block, 0, CUstream.NullStream, false,
writeTarget, src, indices, dim, nElement);
}
return(writeTarget);
}
public Tensor Scatter(Tensor result, Tensor src, int dim, Tensor indices)
{
try
{
TSCudaContext context = CudaHelpers.TSContextForTensor(src);
CudaContext cudaContext = context.CudaContextForTensor(src);
if (result == null)
{
throw new ArgumentNullException("result");
}
if (result.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException($"result and src must have same number of dimensions. result dim count = '{result.DimensionCount}', source dim count = '{src.DimensionCount}'");
}
if (dim < 0 && dim >= result.DimensionCount)
{
throw new ArgumentOutOfRangeException("dim");
}
if (indices.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException("src and indices must have same number of dimensions");
}
if (!src.IsSameSizeAs(indices))
{
throw new InvalidOperationException("src and indices must be the same size");
}
if (!TensorResultBuilder.ArrayEqualExcept(src.Sizes, result.Sizes, dim))
{
throw new InvalidOperationException("result and src must be the same size except in dimension dim");
}
Tensor writeTarget = result;
long nElement = indices.ElementCount();
dim3 block = ApplyUtils.GetApplyBlock();
dim3 grid = ApplyUtils.GetApplyGrid(context.DeviceInfoForContext(cudaContext), nElement);
Invoke(context, cudaContext, "scatter_kernel", grid, block, 0, CUstream.NullStream, false, writeTarget, src, indices, dim, nElement);
return(writeTarget);
}
catch (Exception err)
{
Logger.WriteLine($"Error = '{err.Message}', Call stack = '{err.StackTrace}'");
throw;
}
}
public Tensor Gather(Tensor result, Tensor src, int dim, Tensor indices)
{
TSCudaContext context = CudaHelpers.TSContextForTensor(src);
CudaContext cudaContext = context.CudaContextForTensor(src);
if (result != null && result.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException("result and src must have same number of dimensions");
}
if (result != null && dim < 0 && dim >= result.DimensionCount)
{
throw new ArgumentOutOfRangeException("dim");
}
if (indices.DimensionCount != src.DimensionCount)
{
throw new InvalidOperationException("src and indices must have same number of dimensions");
}
if (result != null && !result.IsSameSizeAs(indices))
{
throw new InvalidOperationException("result and indices must be the same size");
}
if (result != null && !TensorResultBuilder.ArrayEqualExcept(src.Sizes, result.Sizes, dim))
{
throw new InvalidOperationException("result and src must be the same size except in dimension dim");
}
Tensor writeTarget = TensorResultBuilder.GetWriteTarget(result, indices.Allocator, src.ElementType, false, indices.Sizes);
long nElement = indices.ElementCount();
dim3 block = ApplyUtils.GetApplyBlock();
dim3 grid = ApplyUtils.GetApplyGrid(context.DeviceInfoForContext(cudaContext), nElement);
Invoke(context, cudaContext, "gather_kernel", grid, block, 0, CUstream.NullStream, false, writeTarget, src, indices, dim, nElement);
return(writeTarget);
}
/// <summary>
/// Invokes the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="cudaContext">The cuda context.</param>
/// <param name="ptx">The PTX.</param>
/// <param name="baseName">Name of the base.</param>
/// <param name="args">The arguments.</param>
public static void Invoke(TSCudaContext context, CudaContext cudaContext, byte[] ptx, string baseName, params object[] args)
{
ThrowIfAnyTensorInvalid(args);
var deviceInfo = context.DeviceInfoForContext(cudaContext);
var allTensors = args.OfType <NDArray>();
var firstTensor = allTensors.First();
var elementCount = firstTensor.ElementCount();
var spec = new ApplySpecialization(allTensors.ToArray());
ConvertTensorArgs.Convert(cudaContext, spec.Use32BitIndices, args);
var block = ApplyUtils.GetApplyBlock();
var grid = ApplyUtils.GetApplyGrid(deviceInfo, elementCount);
var fullKernelName = PermutationGenerator.GetMangledName(baseName, spec);
var kernel = context.KernelCache.Get(cudaContext, ptx, fullKernelName);
kernel.GridDimensions = grid;
kernel.BlockDimensions = block;
kernel.RunAsync(CUstream.NullStream, args);
}
public Tensor ScatterFill(Tensor result, float value, int dim, Tensor indices)
{
TSCudaContext context = CudaHelpers.TSContextForTensor(indices);
CudaContext cudaContext = context.CudaContextForTensor(indices);
if (result == null)
{
throw new ArgumentNullException("result");
}
if (dim < 0 && dim >= result.DimensionCount)
{
throw new ArgumentOutOfRangeException("dim");
}
if (indices.DimensionCount != result.DimensionCount)
{
throw new InvalidOperationException("result and indices must have same number of dimensions");
}
if (!TensorResultBuilder.ArrayEqualExcept(indices.Sizes, result.Sizes, dim))
{
throw new InvalidOperationException("result and indices must be the same size except in dimension dim");
}
Tensor writeTarget = result;
long nElement = indices.ElementCount();
dim3 block = ApplyUtils.GetApplyBlock();
dim3 grid = ApplyUtils.GetApplyGrid(context.DeviceInfoForContext(cudaContext), nElement);
Invoke(context, cudaContext, "scatterFill_kernel", grid, block, 0, CUstream.NullStream, false,
writeTarget, indices, value, dim, nElement);
return(writeTarget);
}
public Tensor IndexSelect(Tensor result, Tensor src, int dim, Tensor indices)
{
TSCudaContext context = CudaHelpers.TSContextForTensor(src);
CudaContext cudaContext = context.CudaContextForTensor(src);
long[] requiredOutputSize = (long[])src.Sizes.Clone();
requiredOutputSize[dim] = 1;
Tensor writeTarget = TensorResultBuilder.GetWriteTarget(result, src, true, requiredOutputSize);
// The `src` is partitioned into two parts:
// -the size of each slice we are indexing, which is the
// total size of the tensor ignoring dimension `dim`;
// -the number of indices we are choosing, which is the total size
// of the tensor `indices`.
long numIndices = indices.ElementCount();
long dstTotalSize = writeTarget.ElementCount();
long srcSelectDimSize = src.Sizes[dim];
long sliceSize = dstTotalSize / numIndices;
int mpc = context.DeviceInfoForContext(cudaContext).MultiProcessorCount;
dim3 smallIndexGrid = new dim3((uint)Math.Min(ApplyUtils.CeilDiv(sliceSize, 128), (mpc * 8)));
dim3 smallIndexBlock = new dim3((uint)Math.Min(sliceSize, 128));
dim3 largeIndexGrid = new dim3((uint)Math.Min(ApplyUtils.CeilDiv(dstTotalSize, 128), (mpc * 8)));
dim3 largeIndexBlock = new dim3((uint)Math.Min(dstTotalSize, 128));
long[] newResultSize = (long[])writeTarget.Sizes.Clone();
newResultSize[dim] = 1;
Tensor resultFlat = new Tensor(newResultSize, writeTarget.Strides, writeTarget.Storage, writeTarget.StorageOffset);
long[] newSrcSize = (long[])src.Sizes.Clone();
newSrcSize[dim] = 1;
Tensor srcFlat = new Tensor(newSrcSize, src.Strides, src.Storage, src.StorageOffset);
if (ApplyUtils.CanUse32BitIndexMath(writeTarget) &&
ApplyUtils.CanUse32BitIndexMath(src) &&
ApplyUtils.CanUse32BitIndexMath(indices))
{
// Threshold for small kernel
bool smallKernel = numIndices <= 16;
string kernelName = "";
bool indContig = indices.IsContiguous();
if (writeTarget.DimensionCount == src.DimensionCount &&
writeTarget.DimensionCount <= 3 &&
indContig)
{
kernelName = MakeKernelName(smallKernel, true, writeTarget.DimensionCount, src.DimensionCount, -2);
}
else
{
kernelName = MakeKernelName(smallKernel, true, -1, -1, -1);
}
dim3 grid = smallKernel ? smallIndexGrid : largeIndexGrid;
dim3 block = smallKernel ? smallIndexBlock : largeIndexBlock;
Invoke(context, cudaContext, kernelName, grid, block, 0, CUstream.NullStream, true,
writeTarget, src, indices, dim, dim, sliceSize, srcSelectDimSize);
}
else
{
string kernelName = MakeKernelName(false, false, -1, -1, -1);
Invoke(context, cudaContext, kernelName, largeIndexGrid, largeIndexBlock, 0, CUstream.NullStream, false,
writeTarget, src, indices, dim, dim, dstTotalSize, sliceSize, srcSelectDimSize);
}
return(writeTarget);
}
public static Tensor Invoke(CudaReduceKernels reduceKernels, string kernelName, float init, ReduceInitType initType, Tensor result, Tensor src, int dim, object extraArg = null)
{
if (src.DimensionCount == 0)
{
return(result);
}
TSCudaContext context = CudaHelpers.TSContextForTensor(src);
CudaContext cudaContext = context.CudaContextForTensor(src);
long[] requiredOutputSize = (long[])src.Sizes.Clone();
requiredOutputSize[dim] = 1;
Tensor writeTarget = TensorResultBuilder.GetWriteTarget(result, src, false, requiredOutputSize);
ThrowIfAnyTensorInvalid(writeTarget, src);
long inElements = src.ElementCount();
long reductionSize = src.Sizes[dim];
long reductionStride = src.Strides[dim];
long outElements = inElements / reductionSize;
bool contigReduction = reductionStride == 1;
// We must make sure that when the tensor is passed to the kernel, src.Sizes[dim] is set to 1
// This includes for the purposes of determining which tensor specializations to use (changing
// the dimension size to 1 may make the tensor non-contiguous
long[] newSizes = (long[])src.Sizes.Clone();
newSizes[dim] = 1;
Tensor srcSlim = new Tensor(newSizes, src.Strides, src.Storage, src.StorageOffset);
ApplySpecialization config = new ApplySpecialization(writeTarget, srcSlim);
object totalSlices = config.Use32BitIndices ? (uint)outElements : (ulong)outElements;
object reductionSizeTyped = config.Use32BitIndices ? (uint)reductionSize : (ulong)reductionSize;
object reductionStrideTyped = config.Use32BitIndices ? (uint)reductionStride : (ulong)reductionStride;
object initValueTyped = ReduceInitConverter.GetInitValue(init, initType, src.ElementType);
byte[] ptx = reduceKernels.GetPtx(context.Compiler);
if (contigReduction)
{
dim3 block = GetContigReduceBlock(cudaContext, outElements, reductionSize);
dim3 grid = GetContigReduceGrid(outElements);
uint smemSize = (uint)src.ElementType.Size() * block.x;
string fullName = "contig_" + PermutationGenerator.GetMangledName(kernelName, config);
if (extraArg == null)
{
InvokeReduce(context, cudaContext, ptx, fullName, grid, block, smemSize, config, writeTarget, srcSlim, reductionSizeTyped, totalSlices, initValueTyped);
}
else
{
InvokeReduce(context, cudaContext, ptx, fullName, grid, block, smemSize, config, writeTarget, srcSlim, reductionSizeTyped, totalSlices, initValueTyped, extraArg);
}
}
else
{
CudaDeviceProperties deviceProps = context.DeviceInfoForContext(cudaContext);
dim3 block = GetNonContigReduceBlock(deviceProps);
dim3 grid = GetNoncontigReduceGrid(deviceProps, outElements);
uint smemSize = 0;
string fullName = "noncontig_" + PermutationGenerator.GetMangledName(kernelName, config);
if (extraArg == null)
{
InvokeReduce(context, cudaContext, ptx, fullName, grid, block, smemSize, config, writeTarget, srcSlim, reductionStrideTyped, reductionSizeTyped, totalSlices, initValueTyped);
}
else
{
InvokeReduce(context, cudaContext, ptx, fullName, grid, block, smemSize, config, writeTarget, srcSlim, reductionStrideTyped, reductionSizeTyped, totalSlices, initValueTyped, extraArg);
}
}
return(writeTarget);
}