GPUArray - Array of data stored on GPU

Constructor

gpuArray converts an array in the MATLAB workspace into a GPUArray with data stored on the GPU device.

Also, the following static methods create GPUArray data:

parallel.gpu.GPUArray.colon	parallel.gpu.GPUArray.ones
parallel.gpu.GPUArray.eye	parallel.gpu.GPUArray.rand
parallel.gpu.GPUArray.false	parallel.gpu.GPUArray.randi
parallel.gpu.GPUArray.inf	parallel.gpu.GPUArray.randn
parallel.gpu.GPUArray.linspace	parallel.gpu.GPUArray.true
parallel.gpu.GPUArray.logspace	parallel.gpu.GPUArray.zeros
parallel.gpu.GPUArray.nan

You can get help on any of these methods with the command

help parallel.gpu.GPUArray.methodname

where methodname is the name of the method. For example, to get help on rand, type

help parallel.gpu.GPUArray.rand

The following methods control the random number stream on the GPU:

parallel.gpu.RandStream

parallel.gpu.rng

Description

A GPUArray object represents an array of data stored on the GPU. You can use the data for direct calculations, or in CUDA kernels that execute on the GPU. You can return data to the MATLAB workspace with the gather function.

Methods

arrayfun	Apply function to each element of array on GPU
bsxfun	Binary singleton expansion function for GPUArray
existsOnGPU	Determine if GPUArray or CUDAKernel is available on GPU

Other overloaded methods for a GPUArray object are too numerous to list here. Most resemble and behave the same as built-in MATLAB functions. See Using GPUArray. For the complete list of those supported, use the methods function on the GPUArray class:

 methods('parallel.gpu.GPUArray')

Among the GPUArray methods there are several for examining the characteristics of a GPUArray object. Most behave like the MATLAB functions of the same name:

Function	Description
classUnderlying	Class of the underlying data in the array
existsOnGPU	Indication if array exists on the GPU and is accessible
isreal	Indication if array data is real
length	Length of vector or largest array dimension
ndims	Number of dimensions in the array
size	Size of array dimensions

See Also

CUDAKernel, GPUDevice

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