Device management

void	info (bool isdebug=false)
	Print diagnostic information on driver, runtime, memory, and devices. More...
void	deviceprop (char *d_name, char *d_platform, char *d_toolkit, char *d_compute)
	Returns information about current device and platform. More...
void	deviceset (int index)
	Switch to specified device. More...
int	deviceget ()
	Return the index of current device. More...
int	devicecount ()
	Returns the number of available devices. More...

Detailed Description

Function Documentation

void af::info

(

bool

isdebug = false

)

Print diagnostic information on driver, runtime, memory, and devices.

Parameters

[in]

isdebug

Toggle printing memory manager diagnostics (default: false)

Example output:

ArrayFire v1.99 (build 4cb72d2) by AccelerEyes (Linux)
Platform: OpenCL 1.1 CUDA 4.2.1
Device info:
0: [2047 MB] GeForce GT 650M (current)
1: [7876 MB] Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz

Examples:

examples/benchmarks/blas.cpp, examples/benchmarks/fft.cpp, examples/benchmarks/pi.cpp, examples/financial/black_scholes_options.cpp, examples/getting_started/convolve.cpp, examples/getting_started/gfor.cpp, examples/getting_started/integer.cpp, examples/getting_started/lin_algebra.cpp, examples/helloworld/helloworld.cpp, examples/image_processing/image_demo.cpp, examples/image_processing/optical_flow.cpp, examples/machine_learning/kmeans.cpp, examples/machine_learning/neuralnetwork.cpp, examples/multi_device/gemv.cpp, examples/pde/fdtd.cpp, examples/pde/swe.cpp, examples/visualization/blip.cpp, and examples/visualization/vortex.cpp.

void af::deviceprop	(	char *	d_name,
		char *	d_platform,
		char *	d_toolkit,
		char *	d_compute
	)

Returns information about current device and platform.

Requires char arrays to be allocated before calling. Recommended size is 64 characters.

Parameters

[in]	d_name	Stores returned device name
[in]	d_platform	Stores returned platform
[in]	d_toolkit	Stores returned toolkit information
[in]	d_compute	Stores returned compute capability

Example usage:

char name[64], platform[64], toolkit[64], compute[64];
af::deviceprop(name, platform, toolkit, compute);
printf("\nName: %s", name);
printf("\nPlatform: %s", platform);
printf("\nToolkit: %s", toolkit);
printf("\nCompute: %s", compute);

Example output:

//CUDA
//Name: GeForce_GTX_680
//Platform: CUDA
//Toolkit: v5.5
//Compute: 3.0

//OpenCL
//Name: GeForce_GTX_680
//Platform: OpenCL
//Toolkit: NVIDIA CUDA
//Compute: 1.1

void af::deviceset

(

int

index

)

Switch to specified device.

Requires ArrayFire Pro to index beyond first device.

Parameters

[in]

index

Index of device to select.

Examples:

examples/benchmarks/blas.cpp, examples/benchmarks/fft.cpp, examples/benchmarks/pi.cpp, examples/financial/black_scholes_options.cpp, examples/getting_started/convolve.cpp, examples/getting_started/gfor.cpp, examples/getting_started/integer.cpp, examples/getting_started/lin_algebra.cpp, examples/helloworld/helloworld.cpp, examples/image_processing/image_demo.cpp, examples/image_processing/optical_flow.cpp, examples/machine_learning/kmeans.cpp, examples/machine_learning/neuralnetwork.cpp, examples/multi_device/gemv.cpp, examples/pde/fdtd.cpp, examples/pde/swe.cpp, examples/visualization/blip.cpp, and examples/visualization/vortex.cpp.

int af::deviceget

(

)

Return the index of current device.

Returns

index of current device

int af::devicecount

(

)

Returns the number of available devices.

Returns

the number of available devices

Examples:

examples/multi_device/gemv.cpp.