skepu::DeviceMemPointer_CU< T > Class Template Reference

A class representing a CUDA device memory allocation. More...

#include <device_mem_pointer_cu.h>

Public Member Functions
	DeviceMemPointer_CU (T *root, T *start, int numElements, int deviceID, int totalVecSize=-1)
	~DeviceMemPointer_CU ()
void	copyHostToDevice (int numElements=-1, bool copyLast=true) const
void	copyDeviceToHost (int numElements=-1, bool copyLast=true) const
void	copyDeviceToDevice (T *copyToPointer, int numElements, int dstOffset=0, int srcOffset=0) const
T *	getDeviceDataPointer () const
int	getDeviceID () const
void	changeDeviceData ()

Detailed Description

template<typename T>
class skepu::DeviceMemPointer_CU< T >

A class representing a CUDA device memory allocation.

A class representing a CUDA device memory allocation for Matrix.

This class represents a CUDA device memory allocation and controls the data transfers between host and device. Used rarely in this translation as data management is mostly done by StarPU.

Constructor & Destructor Documentation

template<typename T >

skepu::DeviceMemPointer_CU< T >::DeviceMemPointer_CU	(	T *	root,
		T *	start,
		int	numElements,
		int	deviceID,
		int	totalVecSize = -1
	)

The constructor allocates a certain amount of space in device memory and stores a pointer to some data in host memory.

Parameters

start	Pointer to data in host memory.
numElements	Number of elements to allocate memory for.
deviceID	ID of a valid CUDA device to allocate memory on.

template<typename T >

skepu::DeviceMemPointer_CU< T >::~DeviceMemPointer_CU

(

)

The destructor releases the allocated device memory.

Member Function Documentation

template<typename T >

void skepu::DeviceMemPointer_CU< T >::changeDeviceData

(

)

Marks the device data as changed.

template<typename T >

void skepu::DeviceMemPointer_CU< T >::copyDeviceToDevice	(	T *	copyToPointer,
		int	numElements,
		int	dstOffset = 0,
		int	srcOffset = 0
	)		const

Copies data between device memory. Used internally.

Parameters

copyToPointer	the pointer from where to copy
numElements	Number of elements to copy, default value -1 = all elements.
dstOffset	Offset in the destination pointer.
srcOffset	Offset in the source pointer.

template<typename T >

void skepu::DeviceMemPointer_CU< T >::copyDeviceToHost	(	int	numElements = -1,
		bool	copyLast = true
	)		const

Copies data from device memory to host memory. Only copies if data on device has been marked as changed.

Parameters

numElements	Number of elements to copy, default value -1 = all elements.
copyLast	Specify whether should copy only the last allocated data.

template<typename T >

void skepu::DeviceMemPointer_CU< T >::copyHostToDevice	(	int	numElements = -1,
		bool	copyLast = true
	)		const

Copies data from host memory to device memory.

Parameters

numElements	Number of elements to copy, default value -1 = all elements.
copyLast	Specify whether should copy only the last allocated data.

template<typename T >

T * skepu::DeviceMemPointer_CU< T >::getDeviceDataPointer

(

)

const

Returns

Pointer to device memory.

template<typename T >

int skepu::DeviceMemPointer_CU< T >::getDeviceID

(

)

const

Returns

The device ID of the CUDA device that has the allocation.

---

The documentation for this class was generated from the following file:

• include_starpu/skepu/src/device_mem_pointer_cu.h