Class TensorDescriptor

An opaque structure holding the description of a generic n-D dataset.

Inheritance

System.Object

TensorDescriptor

Implements

System.IDisposable

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: ManagedCuda.CudaDNN

Assembly: CudaDNN.dll

Syntax

public class TensorDescriptor : IDisposable

Constructors

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TensorDescriptor()

Declaration

public TensorDescriptor()

Properties

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Desc

Returns the inner handle.

Declaration

public cudnnTensorDescriptor Desc { get; }

Property Value

Type	Description
cudnnTensorDescriptor

Methods

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Dispose()

Dispose

Declaration

public void Dispose()

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Dispose(Boolean)

For IDisposable

Declaration

protected virtual void Dispose(bool fDisposing)

Parameters

Type	Name	Description
System.Boolean	fDisposing

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Finalize()

For dispose

Declaration

protected void Finalize()

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GetTensor4dDescriptor(ref cudnnDataType, ref Int32, ref Int32, ref Int32, ref Int32, ref Int32, ref Int32, ref Int32, ref Int32)

This function queries the parameters of the previouly initialized Tensor4D descriptor object.

Declaration

public void GetTensor4dDescriptor(ref cudnnDataType dataType, ref int n, ref int c, ref int h, ref int w, ref int nStride, ref int cStride, ref int hStride, ref int wStride)

Parameters

Type	Name	Description
cudnnDataType	dataType	Data type.
System.Int32	n	Number of images.
System.Int32	c	Number of feature maps per image.
System.Int32	h	Height of each feature map.
System.Int32	w	Width of each feature map.
System.Int32	nStride	Stride between two consecutive images.
System.Int32	cStride	Stride between two consecutive feature maps.
System.Int32	hStride	Stride between two consecutive rows.
System.Int32	wStride	Stride between two consecutive columns.

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GetTensorNdDescriptor(Int32, ref cudnnDataType, ref Int32, Int32[], Int32[])

This function retrieves values stored in a previously initialized Tensor descriptor object.

Declaration

public void GetTensorNdDescriptor(int nbDimsRequested, ref cudnnDataType dataType, ref int nbDims, int[] dimA, int[] strideA)

Parameters

Type	Name	Description
System.Int32	nbDimsRequested	Number of dimensions to extract from a given tensor descriptor. It is also the minimum size of the arrays dimA and strideA. If this number is greater than the resulting nbDims[0], only nbDims[0] dimensions will be returned.
cudnnDataType	dataType	Data type.
System.Int32	nbDims	Actual number of dimensions of the tensor will be returned in nbDims[0].
System.Int32[]	dimA	Array of dimension of at least nbDimsRequested that will be filled with the dimensions from the provided tensor descriptor.
System.Int32[]	strideA	Array of dimension of at least nbDimsRequested that will be filled with the strides from the provided tensor descriptor.

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GetTensorSizeInBytes()

This function returns the size of the tensor in memory in respect to the given descriptor. This function can be used to know the amount of GPU memory to be allocated to hold that tensor.

Declaration

public SizeT GetTensorSizeInBytes()

Returns

Type	Description
SizeT	Size in bytes needed to hold the tensor in GPU memory.

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SetTensor4dDescriptor(cudnnTensorFormat, cudnnDataType, Int32, Int32, Int32, Int32)

This function initializes a previously created generic Tensor descriptor object into a 4D tensor. The strides of the four dimensions are inferred from the format parameter and set in such a way that the data is contiguous in memory with no padding between dimensions.

Declaration

public void SetTensor4dDescriptor(cudnnTensorFormat format, cudnnDataType dataType, int n, int c, int h, int w)

Parameters

Type	Name	Description
cudnnTensorFormat	format	Type of format.
cudnnDataType	dataType	Data type.
System.Int32	n	Number of images.
System.Int32	c	Number of feature maps per image.
System.Int32	h	Height of each feature map.
System.Int32	w	Width of each feature map.

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SetTensor4dDescriptorEx(cudnnDataType, Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32)

This function initializes a previously created generic Tensor descriptor object into a 4D tensor, similarly to cudnnSetTensor4dDescriptor but with the strides explicitly passed as parameters. This can be used to lay out the 4D tensor in any order or simply to define gaps between dimensions.

Declaration

public void SetTensor4dDescriptorEx(cudnnDataType dataType, int n, int c, int h, int w, int nStride, int cStride, int hStride, int wStride)

Parameters

Type	Name	Description
cudnnDataType	dataType	Data type.
System.Int32	n	Number of images.
System.Int32	c	Number of feature maps per image.
System.Int32	h	Height of each feature map.
System.Int32	w	Width of each feature map.
System.Int32	nStride	Stride between two consecutive images.
System.Int32	cStride	Stride between two consecutive feature maps.
System.Int32	hStride	Stride between two consecutive rows.
System.Int32	wStride	Stride between two consecutive columns.

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SetTensorNdDescriptor(cudnnDataType, Int32, Int32[], Int32[])

This function initializes a previously created generic Tensor descriptor object.

Declaration

public void SetTensorNdDescriptor(cudnnDataType dataType, int nbDims, int[] dimA, int[] strideA)

Parameters

Type	Name	Description
cudnnDataType	dataType	Data type.
System.Int32	nbDims	Dimension of the tensor.
System.Int32[]	dimA	Array of dimension nbDims that contain the size of the tensor for every dimension.
System.Int32[]	strideA	Array of dimension nbDims that contain the stride of the tensor for every dimension.

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SetTensorNdDescriptorEx(cudnnTensorDescriptor, cudnnTensorFormat, cudnnDataType, Int32, Int32[])

This function initializes a previously created generic Tensor descriptor object.

Declaration

public void SetTensorNdDescriptorEx(cudnnTensorDescriptor tensorDesc, cudnnTensorFormat format, cudnnDataType dataType, int nbDims, int[] dimA)

Parameters

Type	Name	Description
cudnnTensorDescriptor	tensorDesc	Handle to a previously created tensor descriptor.
cudnnTensorFormat	format
cudnnDataType	dataType	Data type.
System.Int32	nbDims	Dimension of the tensor.
System.Int32[]	dimA	Array of dimension nbDims that contain the size of the tensor for every dimension.

Implements

System.IDisposable