Struct BlockMeta 

pub struct BlockMeta {

    pub key: BlockKey,
    pub dtype: DType,
    pub tier: Tier,
    pub bits: u8,
    pub scale: f32,
    pub zero_point: i16,
    pub created_at: u64,
    pub last_access_at: u64,
    pub access_count: u32,
    pub ema_rate: f32,
    pub window: u64,
    pub checksum: u32,
    pub reconstruct: ReconstructPolicy,
    pub tier_age: u32,
    pub lineage_parent: Option<u128>,
    pub block_bytes: u32,
}

Complete metadata for a single block.

Fields

key: BlockKey

dtype: DType

tier: Tier

bits: u8

Quantization bit width (8, 7, 5, or 3).

scale: f32

Quantization scale: max(|v|) / qmax.

zero_point: i16

Quantization zero point (0 for symmetric).

created_at: u64

Tick at which this block was created.

last_access_at: u64

Tick of the most recent access.

access_count: u32

Cumulative access count.

ema_rate: f32

Exponential moving average of access rate.

window: u64

Sliding-window bitset for the last 64 ticks.

checksum: u32

CRC32 checksum of quantized payload concatenated with scale bytes.

reconstruct: ReconstructPolicy

How to reconstruct if evicted.

tier_age: u32

Number of ticks spent in the current tier.

lineage_parent: Option<u128>

Optional parent tensor ID for delta-chain lineage.

block_bytes: u32

Size of this block’s quantized payload in bytes.

Trait Implementations

impl Clone for BlockMeta

fn clone(&self) -> BlockMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockMeta

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

Formats the value using the given formatter.