Struct Lamb

Source

pub struct Lamb { /* private fields */ }

Expand description

Layer-wise Adaptive Moments (LAMB) optimizer.

LAMB applies an Adam-style update, then scales it by the ratio between the parameter norm and update norm. This layer-wise adaptation is useful when training with very large batch sizes.

See: Large Batch Optimization for Deep Learning: Training BERT in 76 minutes.

Configured by LambConfig.

Trait Implementations§

Source §

impl Clone for Lamb

Source §

fn clone(&self) -> Self

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

Source §

impl Optimizer for Lamb

Source §

type State<const D: usize> = LambState<D>

The state of the optimizer for a single parameter of rank D. Read more

Source §

fn step<const D: usize>( &self, lr: LearningRate, tensor: Tensor<D>, grad: Tensor<D>, state: Option<Self::State<D>>, ) -> (Tensor<D>, Option<Self::State<D>>)

The optimizer step is performed for one tensor at a time with its gradient and state. Read more

Source §

fn to_device<const D: usize>( state: Self::State<D>, device: &Device, ) -> Self::State<D>

Change the device of the state. Read more

Auto Trait Implementations§

§

impl UnwindSafe for Lamb

Blanket Implementations§

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> 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<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> CloneExpand for T
where T: Clone,

Source §

fn __expand_clone_method(&self, _: &Scope) -> T

Source §

impl<T> CloneToUninit for T
where T: Clone,

Source §

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

Source §

impl<T> Downcast for T
where T: Any,

Source §

fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.

Source §

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

Source §

fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

Source §

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

Source §

impl<T> Downcast<T> for T

Source §

fn downcast(&self) -> &T

Source §

impl<T> DowncastSend for T
where T: Any + Send,

Source §

fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

Source §

impl<T> DowncastSync for T
where T: Any + Send + Sync,

Source §

fn into_any_sync(self: Box<T>) -> Box<dyn Any + Send + Sync>

Converts Box<Trait> (where Trait: DowncastSync) to Box<dyn Any + Send + Sync>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.

Source §

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync> ⓘ

Converts Arc<Trait> (where Trait: DowncastSync) to Arc<Any>, which can then be downcast into Arc<ConcreteType> where ConcreteType implements Trait.

Source §

impl<T> DynClone for T
where T: Clone,

Source §

fn __clone_box(&self, _: Private) -> *mut ()

Source §

impl<O> DynOptimizer for O
where O: Optimizer,

Source §

fn step_dyn( &self, rank: usize, lr: f64, tensor: BridgeTensor, grad: BridgeTensor, state: Option<DynState>, ) -> (BridgeTensor, Option<DynState>)

Perform an optimizer step for a single parameter of the given rank.

Source §

fn to_device_dyn(&self, state: DynState, device: &Device) -> DynState

Move a state to the given device.

Source §

fn state_flatten(&self, prefix: &str, state: &DynState, out: &mut StateSink)

Decompose a state into named tensors and scalars under prefix.

Source §

fn state_unflatten( &self, rank: usize, prefix: &str, src: &mut StateSource, device: &Device, ) -> Option<DynState>

Rebuild a state of the given rank from named tensors and scalars under prefix. Read more

Source §

impl<T> ErasedDestructor for T
where T: 'static,

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

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 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> IntoComptime for T

Source §

fn comptime(self) -> Self

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 §