Struct SpecTraceRound 

pub struct SpecTraceRound {

    pub round: usize,
    pub gen_pos: usize,
    pub base: usize,
    pub k: usize,
    pub a: usize,
    pub drafts: Vec<u32>,
    pub targets: Vec<u32>,
    pub draft_top1: f32,
    pub draft_top2: f32,
    pub draft_tgt_logit: f32,
    pub draft_tgt_rank: usize,
    pub target_top1: f32,
    pub target_top2: f32,
    pub target_draft_logit: f32,
    pub target_entropy: f64,
    pub carrier_rel_l2: Vec<f32>,
    pub carrier_cos: Vec<f32>,
}

One traced spec round (the mtp10 thinkon-decay diagnosis instrument). Trace mode changes NOTHING the accept walk sees — it only reads: draft logit rows, carrier seeds, and the verify’s captured wide rows come to host for margin/drift stats. (Greedy trace runs with host-argmax targets — the same argmax the plain chain uses, proven equal to the device walk by the spec-gate.)

Fields

round: usize

gen_pos: usize

Committed generation length BEFORE this round (position within the generation).

base: usize

Trunk committed rows before the round (the tip’s absolute position).

k: usize

a: usize

drafts: Vec<u32>

targets: Vec<u32>

k+1 target rows (the committed prefix is targets[0..=a]).

draft_top1: f32

Fork-row stats (row a, present when a < k): the draft’s top-2 logits, the draft’s logit and rank of the token the TARGET wanted, the target’s top-2 logits, the target’s logit of the token the DRAFT proposed, and the target row’s softmax entropy (nats). NaN/0 when the round accepted everything (no fork).

draft_top2: f32

draft_tgt_logit: f32

draft_tgt_rank: usize

target_top1: f32

target_top2: f32

target_draft_logit: f32

target_entropy: f64

carrier_rel_l2: Vec<f32>

Carrier drift per carrier-seeded chain step j = 1..k-1: the seed the draft used (its own predicted wide for position base+j-1) vs the trunk’s TRUE wide row at that position (captured by the verify chunk). rel_l2 = ||seed-true||/||true||.

carrier_cos: Vec<f32>

Trait Implementations

impl Clone for SpecTraceRound

fn clone(&self) -> SpecTraceRound

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpecTraceRound

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

Formats the value using the given formatter.

impl Default for SpecTraceRound

fn default() -> SpecTraceRound

Returns the “default value” for a type.