forge::models::gpt2

Struct StepTrace

pub struct StepTrace {
    pub q_len: usize,
    pub kv_len: usize,
    pub n_head: usize,
    pub n_embd: usize,
    pub embedding: Vec<f32>,
    pub attn: Vec<AttnStep>,
    pub detail: Vec<LayerDetail>,
    pub ln_f_out: Vec<f32>,
    pub top: Vec<(u32, f32)>,
}

Expand description

Everything one decode step computed, read back in a single batched round trip. A strict superset of AttnStep: attn is exactly what Gpt2::logits_step_attn_async reports for the same step.

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§q_len: usize

Query positions in this step: the whole prompt on prefill, 1 per decode.

§kv_len: usize

Past positions attended to, including the queries themselves.

§n_head: usize§n_embd: usize§embedding: Vec<f32>

[q_len, n_embd] — token + position embedding, before block 0. Empty when detail_layers is 0.

§attn: Vec<AttnStep>

Every block, in layer order.

§detail: Vec<LayerDetail>

The first detail_layers blocks, in layer order.

§ln_f_out: Vec<f32>

[q_len, n_embd] — after the final LayerNorm, i.e. what the LM head multiplies. Empty when detail_layers is 0.

§top: Vec<(u32, f32)>

Top-n (token id, probability), most likely first. Empty when top_n is 0.

Trait Implementations§

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impl Clone for StepTrace

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fn clone(&self) -> StepTrace

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

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impl Debug for StepTrace

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for StepTrace

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

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

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

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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

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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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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

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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

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