Struct pjrt_sys::protos::xla::WhileLoopBackendConfig

pub struct WhileLoopBackendConfig {
    pub known_trip_count: Option<KnownTripCount>,
}

A backend-config for kWhile loops that stores the loop’s trip count, if it is known.

This is useful for backends that can implement a for i in 0..N loop more efficiently than a while loop. For example, on GPUs, we can implement a for i in 0..N loop by enqueueing the kernels for the loop body N times, whereas implementing a while loop requires a host-device sync on each iteration.

Fields

known_trip_count: Option<KnownTripCount>

This indirection lets us distinguish between known-trip-count == 0 and unknown-trip-count.

Trait Implementations

impl Clone for WhileLoopBackendConfig

fn clone(&self) -> WhileLoopBackendConfig

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WhileLoopBackendConfig

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

Formats the value using the given formatter.

impl Default for WhileLoopBackendConfig

fn default() -> Self

Returns the “default value” for a type.

impl Message for WhileLoopBackendConfig

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for WhileLoopBackendConfig

fn eq(&self, other: &WhileLoopBackendConfig) -> 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 Copy for WhileLoopBackendConfig

impl StructuralPartialEq for WhileLoopBackendConfig