GPUArray< T > Class Template Reference

A class for handling data simultaneously on the CPU and GPU. More...

#include <gpuarray.h>

Public Member Functions
	GPUArray (bool _register=false)
	GPUArray (unsigned int num_elements, bool _register=false)
	The most common constructor takes in the desired size of the array.
	GPUArray (const GPUArray &from)
GPUArray &	operator= (const GPUArray &rhs)
void	swap (GPUArray &from)
	Swap two GPUarrays efficiently. More...
unsigned int	getNumElements () const
	Get the size of the array.
void	setRegistered (bool _reg)
	Switch from simple memcpys to HostRegister pinned memory copies. Not currently fully functional.
virtual void	resize (unsigned int num_elements)
	Resize the array...performs operations on both the CPU and GPU.

Protected Member Functions
void	memclear (unsigned int first=0)
T *	acquire (const access_location::Enum location, const access_mode::Enum mode) const
void	release () const

Protected Attributes
T *	h_data
	pointer to memory on host

Friends
class	ArrayHandle< T >

Detailed Description

template<class T>
class GPUArray< T >

A class for handling data simultaneously on the CPU and GPU.

This class and accessor are based on GPUArray.h, from the HOOMD-Blue simulation package. It is, however, simplified. It takes care of cuda memory copying for templated arrays. A flag (default to false) when declaring a GPUArray controls whether the memory is HostRegistered but only handles synchronous copy operatations (no Asynch, no HostRegister, etc.) It is also only for 1D arrays of data. Importantly, the user accesses and handles data through the ArrayHandle class.

Member Function Documentation

swap()

template<class T >

void GPUArray< T >::swap ( GPUArray< T > &  from )

inline

Swap two GPUarrays efficiently.

a.swap(b) is: GPUArray c(a); a = b; b = c; It just swaps internal pointers

Referenced by Simulation::computeForces().

acquire()

template<class T >

T * GPUArray< T >::acquire ( const access_location::Enum  location, const access_mode::Enum  mode  ) const

inlineprotected

Acquire does all the work, keeping track of when data needs to be copied, etc. It is called by the ArrayHandle class

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

• gpuarray.h