Skip to main content

RandomKCompressor

scirs2_core::distributed::compression

Struct RandomKCompressor 

Source 
pub struct RandomKCompressor { /* private fields */ }
Expand description

Random-K gradient sparsification.

Keeps a randomly-selected subset of gradient elements (uniform without replacement).

Implementations§

Source§

impl RandomKCompressor

Source

pub fn new(k_fraction: f64) -> Self

Create a new random-K compressor.

Source

pub fn compress( &self, gradient: &[f64], seed: u64, ) -> CoreResult<(Vec<usize>, Vec<f64>)>

Compress a gradient using a simple LCG PRNG seeded by seed.

Returns (indices, values) of the randomly-selected elements.

Source

pub fn decompress( indices: &[usize], values: &[f64], n_total: usize, ) -> CoreResult<Vec<f64>>

Decompress a sparse gradient back to a dense vector.

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Az for T

Source§

fn az<Dst>(self) -> Dst
where T: Cast<Dst>,

Casts the value.
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<Src, Dst> CastFrom<Src> for Dst
where Src: Cast<Dst>,

Source§

fn cast_from(src: Src) -> Dst

Casts the value.
Source§

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

Source§

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

Source§

impl<T> CheckedAs for T

Source§

fn checked_as<Dst>(self) -> Option<Dst>
where T: CheckedCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> CheckedCastFrom<Src> for Dst
where Src: CheckedCast<Dst>,

Source§

fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.
Source§

impl<T> Downcast<T> for T

Source§

fn downcast(&self) -> &T

Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> FutureExt for T

Source§

fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
Source§

fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<T> IntoRequest<T> for T

Source§

fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
Source§

impl<L> LayerExt<L> for L

Source§

fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

Applies the layer to a service and wraps it in Layered.
Source§

impl<Src, Dst> LosslessTryInto<Dst> for Src
where Dst: LosslessTryFrom<Src>,

Source§

fn lossless_try_into(self) -> Option<Dst>

Performs the conversion.
Source§

impl<Src, Dst> LossyInto<Dst> for Src
where Dst: LossyFrom<Src>,

Source§

fn lossy_into(self) -> Dst

Performs the conversion.
Source§

impl<T> OverflowingAs for T

Source§

fn overflowing_as<Dst>(self) -> (Dst, bool)
where T: OverflowingCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> OverflowingCastFrom<Src> for Dst
where Src: OverflowingCast<Dst>,

Source§

fn overflowing_cast_from(src: Src) -> (Dst, bool)

Casts the value.
Source§

impl<T> Pointable for T

Source§

const ALIGN: usize

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T> PolicyExt for T
where T: ?Sized,

Source§

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
Source§

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
Source§

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<T> SaturatingAs for T

Source§

fn saturating_as<Dst>(self) -> Dst
where T: SaturatingCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> SaturatingCastFrom<Src> for Dst
where Src: SaturatingCast<Dst>,

Source§

fn saturating_cast_from(src: Src) -> Dst

Casts the value.
Source§

impl<T> StrictAs for T

Source§

fn strict_as<Dst>(self) -> Dst
where T: StrictCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> StrictCastFrom<Src> for Dst
where Src: StrictCast<Dst>,

Source§

fn strict_cast_from(src: Src) -> Dst

Casts the value.
Source§

impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

Source§

fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
Source§

fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
Source§

fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
Source§

fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<T> Ungil for T
where T: Send,

Source§

impl<T> UnwrappedAs for T

Source§

fn unwrapped_as<Dst>(self) -> Dst
where T: UnwrappedCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> UnwrappedCastFrom<Src> for Dst
where Src: UnwrappedCast<Dst>,

Source§

fn unwrapped_cast_from(src: Src) -> Dst

Casts the value.
Source§

impl<T> Upcast<T> for T

Source§

fn upcast(&self) -> Option<&T>

Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> WasmNotSend for T
where T: Send,

Source§

impl<T> WasmNotSendSync for T
where T: WasmNotSend + WasmNotSync,

Source§

impl<T> WasmNotSync for T
where T: Sync,

Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

impl<T> WrappingAs for T

Source§

fn wrapping_as<Dst>(self) -> Dst
where T: WrappingCast<Dst>,

Casts the value.
Source§

impl<Src, Dst> WrappingCastFrom<Src> for Dst
where Src: WrappingCast<Dst>,

Source§

fn wrapping_cast_from(src: Src) -> Dst

Casts the value.