Enum MigrationPolicy 

pub enum MigrationPolicy {
    Default,
    ReadMostly,
    PreferDevice(i32),
    PreferHost,
}

Declarative migration policy for unified memory regions.

Each variant encodes a common access pattern that can be translated into one or more MemAdvice hints via to_advice_pairs.

Variants

Default

No special migration policy. Uses CUDA defaults.

ReadMostly

Mark the region as read-mostly, enabling read-replica creation on accessing devices to reduce migration overhead.

PreferDevice(i32)

Prefer that the data resides on the device with the given ordinal.

PreferHost

Prefer that the data resides in host (CPU) memory.

Implementations

impl MigrationPolicy

pub fn to_advice_pairs(&self) -> Vec<MemAdvice>

Converts this policy into the corresponding MemAdvice values that should be applied.

For Default the returned vec is empty (no advice to set). For compound policies the vec contains all advice hints that need to be issued.

pub fn is_default(&self) -> bool

Returns whether this is the Default variant.

Trait Implementations

impl Clone for MigrationPolicy

fn clone(&self) -> MigrationPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationPolicy

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

Formats the value using the given formatter.

impl Display for MigrationPolicy

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

Formats the value using the given formatter.

impl Hash for MigrationPolicy

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 PartialEq for MigrationPolicy

fn eq(&self, other: &MigrationPolicy) -> 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 Eq for MigrationPolicy

impl StructuralPartialEq for MigrationPolicy