Device management

Functions
magma_int_t	magma_getdevice_arch ()
	Returns CUDA architecture capability for the current device. More...
void	magma_getdevices (magma_device_t *devices, magma_int_t size, magma_int_t *num_dev)
	Fills in devices array with the available devices. More...
void	magma_getdevice (magma_device_t *device)
	Get the current device. More...
void	magma_setdevice (magma_device_t device)
	Set the current device. More...
magma_int_t	magma_getdevice_multiprocessor_count ()
	Returns the multiprocessor count for the current device. More...
size_t	magma_getdevice_shmem_block ()
	Returns the maximum shared memory per block (in bytes) for the current device. More...
size_t	magma_getdevice_shmem_multiprocessor ()
	Returns the maximum shared memory multiprocessor (in bytes) for the current device. More...

Detailed Description

Function Documentation

magma_int_t magma_getdevice_arch

(

)

Returns CUDA architecture capability for the current device.

This requires magma_init() to be called first to cache the information. Version is an integer xyz, where x is major, y is minor, and z is micro, the same as CUDA_ARCH. Thus for architecture 1.3.0 it returns 130.

Returns

CUDA_ARCH for the current device.

void magma_getdevices	(	magma_device_t *	devices,
		magma_int_t	size,
		magma_int_t *	num_dev
	)

Fills in devices array with the available devices.

(This makes much more sense in OpenCL than in CUDA.)

Parameters

[out]	devices	Array of dimension (size). On output, devices[0, ..., num_dev-1] contain device IDs. Entries >= num_dev are not touched.
[in]	size	Dimension of the array devices.
[out]	num_dev	Number of devices, limited to size.

void magma_getdevice

(

magma_device_t *

device

)

Get the current device.

Parameters

[out]

device

On output, device ID of the current device. Each thread has its own current device.

void magma_setdevice

(

magma_device_t

device

)

Set the current device.

Parameters

[in]

device

Device ID to set as the current device. Each thread has its own current device.

magma_int_t magma_getdevice_multiprocessor_count

(

)

Returns the multiprocessor count for the current device.

This requires magma_init() to be called first to cache the information.

Returns

the multiprocessor count for the current device.

size_t magma_getdevice_shmem_block

(

)

Returns the maximum shared memory per block (in bytes) for the current device.

This requires magma_init() to be called first to cache the information.

Returns

the maximum shared memory per block (in bytes) for the current device.

size_t magma_getdevice_shmem_multiprocessor

(

)

Returns the maximum shared memory multiprocessor (in bytes) for the current device.

This requires magma_init() to be called first to cache the information.

Returns

the maximum shared memory per multiprocessor (in bytes) for the current device.