Struct Mamba3Cache 

pub struct Mamba3Cache<B: Backend> {
    pub ssm_bhpr: Tensor<B, 4>,
    pub k_state_brhn: Tensor<B, 4>,
    pub v_state_bhp: Tensor<B, 3>,
    pub cum_angle_bhr: Tensor<B, 3>,
}

The mutable state carried between decoding steps for a single Mamba-3 layer.

All tensors are updated at every call to crate::mamba3::mamba3::Mamba3::step.

Fields

ssm_bhpr: Tensor<B, 4>

SSM hidden state hₜ.

Updated via the trapezoidal recurrence: hₜ = αₜ hₜ₋₁ + βₜ (sum_r K_{t-1}[r] ⊗ (V_{t-1} * mimo_x[r])) + γₜ (sum_r Bₜ[r] ⊗ (xₜ * mimo_x[r]))

Shape: [batch, nheads, per_head_dim, state_rank]

k_state_brhn: Tensor<B, 4>

Previous token’s B per rank = B_{t-1}[r].

Used to reconstruct the β term: β * sum_r B_{t-1}[r] ⊗ (x_{t-1} * mimo_x[r]). For SISO (mimo_rank=1) this is shape [batch, 1, nheads, state_rank].

Shape: [batch, mimo_rank, nheads, state_rank]

v_state_bhp: Tensor<B, 3>

Previous token’s x = x_{t-1}.

Combined with k_state_brhn and mimo_x to produce the β term.

Shape: [batch, nheads, per_head_dim]

cum_angle_bhr: Tensor<B, 3>

Cumulative data-dependent RoPE angle up to the current position.

Each step updates: cum_angle_{t} = cum_angle_{t-1} + Δ_t · tanh(θ_t) · π

Starts at zero for fresh sequences; continued across calls for streaming.

Shape: [batch, nheads, num_rope_angles]

Implementations

impl<B: Backend> Mamba3Cache<B>

pub fn sanity(&self)

Trait Implementations

impl<B> AutodiffModule<B> for Mamba3Cache<B>

where B: AutodiffBackend + Backend, <B as AutodiffBackend>::InnerBackend: Backend,

type InnerModule = Mamba3Cache<<B as AutodiffBackend>::InnerBackend>

Inner module without auto-differentiation.

fn valid(&self) -> Self::InnerModule

Returns the same module, but on the inner backend without auto-differentiation.

fn from_inner(module: Self::InnerModule) -> Self

Wraps an inner module back into an auto-diff module.

impl<B: Backend> Clone for Mamba3Cache<B>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<B: Debug + Backend> Debug for Mamba3Cache<B>

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

Formats the value using the given formatter.

impl<B: Backend> Display for Mamba3Cache<B>

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

Formats the value using the given formatter.

impl<B> HasAutodiffModule<B> for Mamba3Cache<B::InnerBackend>

where B: AutodiffBackend + Backend, <B as AutodiffBackend>::InnerBackend: Backend,

type TrainModule = Mamba3Cache<B>

The module with auto-differentiation.

impl<B: Backend> Module<B> for Mamba3Cache<B>

type Record = Mamba3CacheRecord<B>

Type to save and load the module.

fn load_record(self, record: Self::Record) -> Self

Load the module state from a record.

fn into_record(self) -> Self::Record

Convert the module into a record containing the state.

fn num_params(&self) -> usize

Get the number of parameters the module has, including all of its sub-modules.

fn visit<Visitor: ModuleVisitor<B>>(&self, visitor: &mut Visitor)

Visit each tensor parameter in the module with a visitor.

fn map<Mapper: ModuleMapper<B>>(self, mapper: &mut Mapper) -> Self

Map each tensor parameter in the module with a mapper.

fn collect_devices(&self, devices: Devices<B>) -> Devices<B>

Return all the devices found in the underneath module tree added to the given vector without duplicates.

fn to_device(self, device: &B::Device) -> Self

Move the module and all of its sub-modules to the given device.

fn fork(self, device: &B::Device) -> Self

Fork the module and all of its sub-modules to the given device.

fn devices(&self) -> Vec<<B as BackendTypes>::Device>

Return all the devices found in the underneath module tree without duplicates.

fn no_grad(self) -> Self

Each tensor in the module tree will not require grad.

fn train<AB>(self) -> Self::TrainModule

where AB: AutodiffBackend<InnerBackend = B>, Self: HasAutodiffModule<AB>,

Move the module and all of its sub-modules to the autodiff backend.

fn quantize_weights(self, quantizer: &mut Quantizer) -> Self

Quantize the weights of the module.

impl<B: Backend> ModuleDisplay for Mamba3Cache<B>

fn format(&self, passed_settings: DisplaySettings) -> String

Formats the module with provided display settings.

fn custom_settings(&self) -> Option<DisplaySettings>

Custom display settings for the module.

fn custom_content(&self, _content: Content) -> Option<Content>

Custom attributes for the module.

impl<B: Backend> ModuleDisplayDefault for Mamba3Cache<B>

fn content(&self, content: Content) -> Option<Content>

Attributes of the module used for display purposes.

fn num_params(&self) -> usize

Gets the number of the parameters of the module.