Device management

AFAPI afError	af_info ()
	Print diagnostic information on driver, runtime, memory, and devices.
AFAPI afError	af_cuda_info (char *driverVersion, double *runtimeVersion, int buflen)
AFAPI afError	af_deviceset (int index, bool use_graphics=true, char sort_mode='f')
	Switch to specified device.
AFAPI afError	af_deviceget (int *dev)
	Fetch current device index (sorted by estimated FLOPs).
AFAPI afError	af_devicegetreal (int dev, int *devreal)
	Translate sorted device index into real CUDA device index.
AFAPI afError	af_devicepush (int index)
	Save current device on stack and switch to specified device.
AFAPI afError	af_devicepop ()
	Pop last device off stack and switch to it.
AFAPI afError	af_devicecountactive (int *count, int *devices)
	Enumerate active devices.
AFAPI afError	af_devicecount (int *count)

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Function Documentation

AFAPI afError af_info

(

)

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

AFAPI afError af_cuda_info	(	char *	driverVersion,
		double *	runtimeVersion,
		int	buflen
	)

AFAPI afError af_deviceset	(	int	index,
		bool	use_graphics = true,
		char	sort_mode = 'f'
	)

Switch to specified device.

Requires ArrayFire Pro to index beyond first device.

Parameters:

[in]	index	Index of device to select (zero-based).
[in]	use_graphics	Indicate if graphics should be enabled (default: true)
[in]	sort_mode	To sort devices based on theoritical FLOPs (sort_mode = 'f') or Memory(sort_mode = 'm')

AFAPI afError af_deviceget

(

int *

dev

)

Fetch current device index (sorted by estimated FLOPs).

Parameters:

[out]

dev

Device index (zero-based). -1 if not yet initialized.

AFAPI afError af_devicegetreal	(	int	dev,
		int *	devreal
	)

Translate sorted device index into real CUDA device index.

Parameters:

[in]	dev	Sorted index as seen in info() (zero-based)
[out]	devreal	CUDA device index (zero-based). -1 if not yet initialized or dev beyond range.

AFAPI afError af_devicepush

(

int

index

)

Save current device on stack and switch to specified device.

Parameters:

[in]

index

Index of device to select.

See also:

af_devicepop(), af_deviceset()

AFAPI afError af_devicepop

(

)

Pop last device off stack and switch to it.

See also:

af_devicepush()

AFAPI afError af_devicecountactive	(	int *	count,
		int *	devices
	)

Enumerate active devices.

Parameters:

[out]	count	Count of active devices
[out]	devices	Pointer to store back indices (zero-based, ignore if NULL)

See also:

af_deviceget()

AFAPI afError af_devicecount

(

int *

count

)

Returns:

Number of devices

See also:

af_deviceget()