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>,
}

2026-09-25: The nested dflash_config block of the drafter’s config.json.

Fields

mask_token_id: u32

2026-09-25: Token id that fills the draft block after its anchor token.

target_layer_ids: Vec<usize>

2026-09-25: Target-model layers whose hidden states the drafter reads. The head refuses to build when the list is empty.

projector_type: Option<String>

2026-09-25: "dspark" marks a drafter whose row j predicts position j + 1; the head then rotates the draft vector right by one, unless METRALE_DSPARK_SHIFT overrides it.

conv_kernel_size: usize

2026-09-25: DFlash2 conv kernel size; 0 when absent. With conv_group_size, a non-zero value lets the conv tensors load.

conv_group_size: usize

2026-09-25: DFlash2 channels per conv group; 0 when absent.

selector_rank: usize

2026-09-25: DFlash2 selector codebook rank; 0 when absent. With selector_top_k, a non-zero value lets the selector tensors load.

selector_top_k: usize

2026-09-25: DFlash2 candidates kept per position; 0 when absent.

block_size: Option<usize>

2026-09-25: The drafter’s trained block size, when the checkpoint states it here. None falls back to the top-level field. Read it 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.