Enum LoopStabilityMode 

#[repr(u8)]
pub enum LoopStabilityMode {
    None = 0,
    InterLoopNorm = 1,
}

Loop stability mode for weight-shared looped inference (Plan 428).

Parameter-free architectural fixes for T-pass loop stability, validated via the §3.6 defend-wrong PoC benchmark.

Only InterLoopNorm ships — the PoC proved it’s the sole fix that controls residual norm growth. FLA-res (direct residual addition of prev_h at every layer) caused catastrophic norm explosion (~2.2B× at T=12), and Attention Injection was a no-op for single-position attention (softmax of 1 element = 1.0, so Q doesn’t affect the output). Both were dropped per the defend-wrong verdict.

Variants

None = 0

No inter-loop stabilization (byte-identical to pre-Plan-428 behavior).

InterLoopNorm = 1

Inter-loop RMSNorm: normalize the hidden state between loop iterations (tau > 0), before the inner layer pass. PoC: norm ratio 3.34× vs baseline 11.19×, KL 0.0008, step-size trend converging (14.9 → 2.05).

Trait Implementations

impl Clone for LoopStabilityMode

fn clone(&self) -> LoopStabilityMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LoopStabilityMode

impl Debug for LoopStabilityMode

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

Formats the value using the given formatter.

impl Default for LoopStabilityMode

fn default() -> LoopStabilityMode

Returns the “default value” for a type.

impl Eq for LoopStabilityMode

impl PartialEq for LoopStabilityMode

fn eq(&self, other: &LoopStabilityMode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LoopStabilityMode