Struct Device 

pub struct Device(/* private fields */);

A CUDA device (Runtime API view — a bare ordinal).

Implementations

impl Device

pub fn count() -> Result<u32>

Number of CUDA devices visible to the process.

pub const fn from_ordinal(ordinal: u32) -> Self

Construct a Device for the given ordinal. Does not validate — use Device::all if you want a checked enumeration.

pub fn all() -> Result<Vec<Self>>

All visible devices, in ordinal order.

pub fn set_current(&self) -> Result<()>

Set this device as current on the calling thread. Subsequent Runtime API calls (allocations, launches, …) operate on this device.

pub fn current() -> Result<Self>

Retrieve the device currently selected on the calling thread.

pub fn ordinal(&self) -> i32

Ordinal of this device (0, 1, …).

pub fn compute_capability(&self) -> Result<(u32, u32)>

Compute capability as (major, minor).

pub fn multiprocessor_count(&self) -> Result<u32>

Multiprocessor count.

pub fn warp_size(&self) -> Result<u32>

Warp size in threads.

pub fn attribute(&self, attr: i32) -> Result<i32>

Raw device-attribute query. See baracuda_cuda_sys::runtime::types::cudaDeviceAttr.

pub fn can_access_peer(&self, peer: &Device) -> Result<bool>

true if this device can peer-access peer’s allocations (P2P). Call Device::enable_peer_access before actually using peer pointers in kernels.

pub fn enable_peer_access(peer: &Device) -> Result<()>

Enable peer access from the current device to peer’s allocations. Call Device::set_current() on the accessing device first.

pub fn disable_peer_access(peer: &Device) -> Result<()>

Disable peer access previously enabled via Device::enable_peer_access.

Trait Implementations

impl Clone for Device

fn clone(&self) -> Device

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Device

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Device

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Device

fn cmp(&self, other: &Device) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Device

fn eq(&self, other: &Device) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Device

fn partial_cmp(&self, other: &Device) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Device

impl Eq for Device

impl StructuralPartialEq for Device