Class CudaPitchedDeviceVariable<T>

A variable located in CUDA device memory. The data is aligned following Pitch

Inheritance

System.Object

CudaPitchedDeviceVariable<T>

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

Assembly: ManagedCuda.dll

Syntax

public class CudaPitchedDeviceVariable<T> : IDisposable where T : struct

Type Parameters

Name	Description
T	variable base type

Constructors

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CudaPitchedDeviceVariable(CUdeviceptr, SizeT, SizeT, SizeT)

Creates a new CudaPitchedDeviceVariable from an existing CUdeviceptr The CUdeviceptr won't be freed when disposing.

Declaration

public CudaPitchedDeviceVariable(CUdeviceptr devPtr, SizeT width, SizeT height, SizeT pitch)

Parameters

Type	Name	Description
CUdeviceptr	devPtr
SizeT	width	In elements
SizeT	height	In elements
SizeT	pitch	In bytes

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CudaPitchedDeviceVariable(CUdeviceptr, SizeT, SizeT, SizeT, Boolean)

Creates a new CudaPitchedDeviceVariable from an existing CUdeviceptr

Declaration

public CudaPitchedDeviceVariable(CUdeviceptr devPtr, SizeT width, SizeT height, SizeT pitch, bool isOwner)

Parameters

Type	Name	Description
CUdeviceptr	devPtr
SizeT	width	In elements
SizeT	height	In elements
SizeT	pitch	In bytes
System.Boolean	isOwner	The CUdeviceptr will be freed while disposing if the CudaPitchedDeviceVariable is the owner

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CudaPitchedDeviceVariable(SizeT, SizeT)

Creates a new CudaPitchedDeviceVariable and allocates the memory on the device

Declaration

public CudaPitchedDeviceVariable(SizeT width, SizeT height)

Parameters

Type	Name	Description
SizeT	width	In elements
SizeT	height	In elements

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CudaPitchedDeviceVariable(SizeT, SizeT, SizeT)

Creates a new CudaPitchedDeviceVariable and allocates the memory on the device

Declaration

public CudaPitchedDeviceVariable(SizeT width, SizeT height, SizeT pack)

Parameters

Type	Name	Description
SizeT	width	In elements
SizeT	height	In elements
SizeT	pack	Group `pack` elements as one type. E.g. 4 floats in host code to one float4 in device code

Properties

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DevicePointer

Device pointer

Declaration

public CUdeviceptr DevicePointer { get; }

Property Value

Type	Description
CUdeviceptr

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Height

Height in elements

Declaration

public SizeT Height { get; }

Property Value

Type	Description
SizeT

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Item[SizeT, SizeT]

Access array elements directly from host.

Each single access invokes a device to host or host to device copy. Access is therefor rather slow.

Declaration

public T this[SizeT x, SizeT y] { get; set; }

Parameters

Type	Name	Description
SizeT	x	X-index in elements
SizeT	y	Y-index in elements

Property Value

Type	Description
T

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Pitch

Pitch in bytes

Declaration

public SizeT Pitch { get; }

Property Value

Type	Description
SizeT

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TotalSizeInBytes

Total size in bytes (Pitch * Height)

Declaration

public SizeT TotalSizeInBytes { get; }

Property Value

Type	Description
SizeT

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Width

Width in elements

Declaration

public SizeT Width { get; }

Property Value

Type	Description
SizeT

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WidthInBytes

Width in bytes

Declaration

public SizeT WidthInBytes { get; }

Property Value

Type	Description
SizeT

Methods

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AsyncCopyToDevice(CUdeviceptr, CUstream)

Async Copy data from device to device memory

Declaration

public void AsyncCopyToDevice(CUdeviceptr source, CUstream stream)

Parameters

Type	Name	Description
CUdeviceptr	source	Source pointer to device memory
CUstream	stream

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AsyncCopyToDevice(CUdeviceptr, CudaStream)

Async Copy data from device to device memory (1D Copy, copies destination pitch * height bytes data)

Declaration

public void AsyncCopyToDevice(CUdeviceptr source, CudaStream stream)

Parameters

Type	Name	Description
CUdeviceptr	source	Source pointer to device memory
CudaStream	stream

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AsyncCopyToDevice(CudaDeviceVariable<T>, CUstream)

Async Copy data from device to device memory

Declaration

public void AsyncCopyToDevice(CudaDeviceVariable<T> source, CUstream stream)

Parameters

Type	Name	Description
CudaDeviceVariable<T>	source	Source
CUstream	stream

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AsyncCopyToDevice(CudaDeviceVariable<T>, CudaStream)

Async Copy data from device to device memory (1D Copy, copies destination pitch * height bytes data)

Declaration

public void AsyncCopyToDevice(CudaDeviceVariable<T> source, CudaStream stream)

Parameters

Type	Name	Description
CudaDeviceVariable<T>	source	Source
CudaStream	stream

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AsyncCopyToDevice(CudaPitchedDeviceVariable<T>, CUstream)

Async Copy from device to device memory

Declaration

public void AsyncCopyToDevice(CudaPitchedDeviceVariable<T> deviceSrc, CUstream stream)

Parameters

Type	Name	Description
CudaPitchedDeviceVariable<T>	deviceSrc	Source
CUstream	stream

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AsyncCopyToDevice(CudaPitchedDeviceVariable<T>, CudaStream)

Async Copy from device to device memory

Declaration

public void AsyncCopyToDevice(CudaPitchedDeviceVariable<T> deviceSrc, CudaStream stream)

Parameters

Type	Name	Description
CudaPitchedDeviceVariable<T>	deviceSrc	Source
CudaStream	stream

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CopyToDevice(T[])

Copy from Host to device memory

Declaration

public void CopyToDevice(T[] hostSrc)

Parameters

Type	Name	Description
T[]	hostSrc	Source

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CopyToDevice(T[], SizeT, SizeT)

Copy from Host to device memory

Declaration

public void CopyToDevice(T[] hostSrc, SizeT width, SizeT height)

Parameters

Type	Name	Description
T[]	hostSrc	Source
SizeT	width	Width in elements
SizeT	height	Height in elements

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CopyToDevice(T[], SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from host to device memory

Declaration

public void CopyToDevice(T[] hostSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
T[]	hostSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToDevice(T[,])

Copy from Host to device memory. Assumes that aHostDest has no additional line padding.

Declaration

public void CopyToDevice(T[, ] hostSrc)

Parameters

Type	Name	Description
T[,]	hostSrc	Source

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CopyToDevice(T[,], SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from host to device memory

Declaration

public void CopyToDevice(T[, ] hostSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
T[,]	hostSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToDevice(CUdeviceptr)

Copy from device to device memory

Declaration

public void CopyToDevice(CUdeviceptr deviceSrc)

Parameters

Type	Name	Description
CUdeviceptr	deviceSrc	Source

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CopyToDevice(CUdeviceptr, SizeT)

Copy from device to device memory

Declaration

public void CopyToDevice(CUdeviceptr deviceSrc, SizeT pitchSrc)

Parameters

Type	Name	Description
CUdeviceptr	deviceSrc	Source
SizeT	pitchSrc	Source pitch

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CopyToDevice(CUdeviceptr, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from device to device memory

Declaration

public void CopyToDevice(CUdeviceptr deviceSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
CUdeviceptr	deviceSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToDevice(CudaDeviceVariable<T>)

Copy from device to device memory

Declaration

public void CopyToDevice(CudaDeviceVariable<T> deviceSrc)

Parameters

Type	Name	Description
CudaDeviceVariable<T>	deviceSrc	Source

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CopyToDevice(CudaDeviceVariable<T>, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from device to device memory

Declaration

public void CopyToDevice(CudaDeviceVariable<T> deviceSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
CudaDeviceVariable<T>	deviceSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToDevice(CudaPitchedDeviceVariable<T>)

Copy from device to device memory

Declaration

public void CopyToDevice(CudaPitchedDeviceVariable<T> deviceSrc)

Parameters

Type	Name	Description
CudaPitchedDeviceVariable<T>	deviceSrc	Source

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CopyToDevice(CudaPitchedDeviceVariable<T>, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from device to device memory

Declaration

public void CopyToDevice(CudaPitchedDeviceVariable<T> deviceSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
CudaPitchedDeviceVariable<T>	deviceSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToDevice(IntPtr)

Copy from Host to device memory

Declaration

public void CopyToDevice(IntPtr hostSrc)

Parameters

Type	Name	Description
System.IntPtr	hostSrc	Source

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CopyToDevice(IntPtr, SizeT, SizeT)

Copy from Host to device memory

Declaration

public void CopyToDevice(IntPtr hostSrc, SizeT width, SizeT height)

Parameters

Type	Name	Description
System.IntPtr	hostSrc	Source
SizeT	width	Width in bytes
SizeT	height	Height in elements

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CopyToDevice(IntPtr, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy from host to device memory

Declaration

public void CopyToDevice(IntPtr hostSrc, SizeT SrcXInBytes, SizeT SrcY, SizeT DestXInBytes, SizeT DestY, SizeT widthInBytes, SizeT height, SizeT SrcPitch, SizeT DestPitch)

Parameters

Type	Name	Description
System.IntPtr	hostSrc	Source
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	SrcPitch	Source pitch
SizeT	DestPitch	Destination pitch

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CopyToHost(T[])

Copy data from device to host memory

Declaration

public void CopyToHost(T[] aHostDest)

Parameters

Type	Name	Description
T[]	aHostDest	Destination

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CopyToHost(T[], SizeT, SizeT)

Copy data from this device to host memory

Declaration

public void CopyToHost(T[] hostDest, SizeT width, SizeT height)

Parameters

Type	Name	Description
T[]	hostDest	Destination
SizeT	width	Width in elements
SizeT	height	Height in elements

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CopyToHost(T[], SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy data from device to host memory

Declaration

public void CopyToHost(T[] hostDest, SizeT DestXInBytes, SizeT DestY, SizeT SrcXInBytes, SizeT SrcY, SizeT widthInBytes, SizeT height, SizeT DestPitch, SizeT SrcPitch)

Parameters

Type	Name	Description
T[]	hostDest	Destination
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	DestPitch	Destination pitch
SizeT	SrcPitch	Source pitch

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CopyToHost(T[,])

Copy data from device to host memory. Assumes that aHostDest has no additional line padding.

Declaration

public void CopyToHost(T[, ] aHostDest)

Parameters

Type	Name	Description
T[,]	aHostDest	Destination

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CopyToHost(T[,], SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy data from device to host memory

Declaration

public void CopyToHost(T[, ] hostDest, SizeT DestXInBytes, SizeT DestY, SizeT SrcXInBytes, SizeT SrcY, SizeT widthInBytes, SizeT height, SizeT DestPitch, SizeT SrcPitch)

Parameters

Type	Name	Description
T[,]	hostDest	Destination
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	DestPitch	Destination pitch
SizeT	SrcPitch	Source pitch

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CopyToHost(IntPtr)

Copy data from device to host memory

Declaration

public void CopyToHost(IntPtr hostDest)

Parameters

Type	Name	Description
System.IntPtr	hostDest	IntPtr to destination in host memory

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CopyToHost(IntPtr, SizeT, SizeT)

Copy data from device to host memory

Declaration

public void CopyToHost(IntPtr hostDest, SizeT width, SizeT height)

Parameters

Type	Name	Description
System.IntPtr	hostDest	IntPtr to destination in host memory
SizeT	width	Width in bytes
SizeT	height	Height in elements

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CopyToHost(IntPtr, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT, SizeT)

Copy data from device to host memory

Declaration

public void CopyToHost(IntPtr hostDest, SizeT DestXInBytes, SizeT DestY, SizeT SrcXInBytes, SizeT SrcY, SizeT widthInBytes, SizeT height, SizeT DestPitch, SizeT SrcPitch)

Parameters

Type	Name	Description
System.IntPtr	hostDest	Destination
SizeT	DestXInBytes	Destination X in bytes
SizeT	DestY	Destination Y
SizeT	SrcXInBytes	Source X in bytes
SizeT	SrcY	Source Y
SizeT	widthInBytes	Width in bytes
SizeT	height	Height in elements
SizeT	DestPitch	Destination pitch
SizeT	SrcPitch	Source pitch

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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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Memset(Byte)

Memset

Declaration

public void Memset(byte aValue)

Parameters

Type	Name	Description
System.Byte	aValue

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Memset(UInt16)

Memset

Declaration

public void Memset(ushort aValue)

Parameters

Type	Name	Description
System.UInt16	aValue

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Memset(UInt32)

Memset

Declaration

public void Memset(uint aValue)

Parameters

Type	Name	Description
System.UInt32	aValue

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MemsetAsync(Byte, CUstream)

Memset

Declaration

public void MemsetAsync(byte aValue, CUstream stream)

Parameters

Type	Name	Description
System.Byte	aValue
CUstream	stream

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MemsetAsync(UInt16, CUstream)

Memset

Declaration

public void MemsetAsync(ushort aValue, CUstream stream)

Parameters

Type	Name	Description
System.UInt16	aValue
CUstream	stream

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MemsetAsync(UInt32, CUstream)

Memset

Declaration

public void MemsetAsync(uint aValue, CUstream stream)

Parameters

Type	Name	Description
System.UInt32	aValue
CUstream	stream

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PeerCopyToDevice(CudaContext, CUdeviceptr, CudaContext)

Copies from device memory in one context to device memory in another context

Declaration

public void PeerCopyToDevice(CudaContext destCtx, CUdeviceptr source, CudaContext sourceCtx)

Parameters

Type	Name	Description
CudaContext	destCtx	Destination context
CUdeviceptr	source	Source pointer to device memory
CudaContext	sourceCtx	Source context

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PeerCopyToDevice(CudaContext, CUdeviceptr, CudaContext, CUstream)

Async-Copies from device memory in one context to device memory in another context

Declaration

public void PeerCopyToDevice(CudaContext destCtx, CUdeviceptr source, CudaContext sourceCtx, CUstream stream)

Parameters

Type	Name	Description
CudaContext	destCtx	Destination context
CUdeviceptr	source	Source pointer to device memory
CudaContext	sourceCtx	Source context
CUstream	stream

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PeerCopyToDevice(CudaContext, CudaDeviceVariable<T>, CudaContext)

Copies from device memory in one context to device memory in another context

Declaration

public void PeerCopyToDevice(CudaContext destCtx, CudaDeviceVariable<T> source, CudaContext sourceCtx)

Parameters

Type	Name	Description
CudaContext	destCtx	Destination context
CudaDeviceVariable<T>	source	Source pointer to device memory
CudaContext	sourceCtx	Source context

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PeerCopyToDevice(CudaContext, CudaDeviceVariable<T>, CudaContext, CUstream)

Async-Copies from device memory in one context to device memory in another context

Declaration

public void PeerCopyToDevice(CudaContext destCtx, CudaDeviceVariable<T> source, CudaContext sourceCtx, CUstream stream)

Parameters

Type	Name	Description
CudaContext	destCtx	Destination context
CudaDeviceVariable<T>	source	Source pointer to device memory
CudaContext	sourceCtx	Source context
CUstream	stream

Operators

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Implicit(CudaPitchedDeviceVariable<T> to T[])

Converts a device variable to a host array

Declaration

public static implicit operator T[](CudaPitchedDeviceVariable<T> d)

Parameters

Type	Name	Description
CudaPitchedDeviceVariable<T>	d	device variable

Returns

Type	Description
T[]	newly allocated host array with values from device memory

Implements

System.IDisposable