Struct DflashSubConfig 

pub struct DflashSubConfig {
    pub mask_token_id: u32,
    pub target_layer_ids: Vec<usize>,
    pub projector_type: Option<String>,
    pub conv_kernel_size: usize,
    pub conv_group_size: usize,
    pub selector_rank: usize,
    pub selector_top_k: usize,
    pub block_size: Option<usize>,
}

Nested dflash_config block in the drafter’s config.json.

Fields

mask_token_id: u32

Token id used to fill the γ “to-be-predicted” positions during draft inference. 248070 for Qwen3.6-DFlash.

target_layer_ids: Vec<usize>

Target-model layer indices to capture intermediate hidden states from. [1, 10, 19, 28, 37] for Qwen3.6-35B-A3B-DFlash. Order matters: shallow-to-deep concatenation is what fc expects.

projector_type: Option<String>

Draft flavor tag. "dspark" marks a SpecForge-lineage drafter, whose row convention is SHIFTED (row j’s output = token at position j+1; the anchor row’s output is draft #1) versus the z-lab convention Atlas’s forward was built for (row j predicts at j, row 0 = echo). The runtime keys the draft-vector rotation off this tag. DFlash2 checkpoints have no tag and keep the z-lab convention (verified against z-lab dflash/model.py::dflash_generate — anchor-row output discarded, mask rows fill in place).

conv_kernel_size: usize

Two-tap dynamic conv kernel size (2 for DFlash2).

conv_group_size: usize

Channels per conv group (16 for DFlash2 → hidden/16 groups).

selector_rank: usize

Selector codebook rank (256 for DFlash2).

selector_top_k: usize

Candidates kept per position for the selector walk (16 for DFlash2).

block_size: Option<usize>

Block size γ as the drafter was TRAINED, when the checkpoint states it here. DFlash2 ships block_size: 8 inside dflash_config; DFlash1 ships it top-level only. None = not stated, fall back to the top-level field. Read through DflashConfig::effective_block_size.

Trait Implementations

impl Clone for DflashSubConfig

fn clone(&self) -> DflashSubConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DflashSubConfig

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DflashSubConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.