Struct Glm5NextDsaConfig 

pub struct Glm5NextDsaConfig {

    pub hidden: usize,
    pub index_heads: usize,
    pub index_head_dim: usize,
    pub index_kpool: usize,
    pub index_topk: usize,
    pub always_select_tail: bool,
    pub local_heads: usize,
    pub q_lora_rank: usize,
    pub kv_lora_rank: usize,
    pub qk_nope_head_dim: usize,
    pub qk_rope_head_dim: usize,
    pub v_head_dim: usize,
    pub max_context: usize,
}

DSA geometry for one layer, read from the checkpoint config — never defaulted.

Head counts are per-rank local for the MLA side and full for the indexer, which is replicated. See tp for why.

Fields

hidden: usize

index_heads: usize

index_head_dim: usize

index_kpool: usize

index_topk: usize

always_select_tail: bool

local_heads: usize

Attention heads this rank owns.

q_lora_rank: usize

kv_lora_rank: usize

qk_nope_head_dim: usize

qk_rope_head_dim: usize

Zero on GLM-5.3. Kept explicit so a nonzero value is a loud change.

v_head_dim: usize

max_context: usize

Longest context a sequence’s indexer cache is reserved for, in tokens — the serve’s --max-seq-len. Not a kernel limit (the top-k select is tiled); an ALLOCATION, and the biggest per-sequence one GLM-5.3 makes. See state::max_dsa_context.

Implementations

impl Glm5NextDsaConfig

pub fn from_config(config: &ModelConfig) -> Result<Self>

config carries per-rank-local attention head counts: serve_phases::topology divides num_attention_heads by tp_size before any loader runs.

pub fn qk_head_dim(&self) -> usize

pub fn is_nope(&self) -> bool

True when there is no RoPE section at all — GLM-5.3.

pub fn select_k(&self, n_pools: usize) -> usize

Pools selected per query, capped by how many pools exist.

pub fn out_width(&self) -> usize

Width of the emitted index row; the tail adds kpool - 1 slots.

pub fn kv_cache_dim(&self) -> usize

KV latent cache width. No rope section under NoPE, so this is exactly kv_lora_rank — 512 for GLM-5.3, where DeepSeek-V4-Flash uses 576.

pub fn validate(&self) -> Result<()>

Trait Implementations

impl Clone for Glm5NextDsaConfig

fn clone(&self) -> Glm5NextDsaConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Glm5NextDsaConfig

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

Formats the value using the given formatter.

impl PartialEq for Glm5NextDsaConfig

fn eq(&self, other: &Glm5NextDsaConfig) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Glm5NextDsaConfig

impl Eq for Glm5NextDsaConfig

impl StructuralPartialEq for Glm5NextDsaConfig