Struct Layout 

pub struct Layout {
    pub shards: u64,
    pub rows_per_shard: u64,
    pub width: u64,
    pub row_bytes: u64,
    pub badge_rows: u64,
}

物理布局描述：分片化的定长行存储（如 PLE: 128 shards × [2_500_012, 160] FP8）。

Fields

shards: u64

rows_per_shard: u64

width: u64

row_bytes: u64

badge_rows: u64

Implementations

impl Layout

pub fn new( shards: u64, rows_per_shard: u64, width: u64, elem_bytes: u64, ) -> Self

pub fn total_rows(&self) -> u64

pub fn badge_bytes(&self) -> u64

badge 字节数（4KB 对齐推荐）

pub fn locate(&self, rowid: u64) -> (u64, u64, u64)

rowid → (shard_id, badge_id, in_badge_row)

pub fn byte_offset(&self, rowid: u64) -> u64

一维张量模式：总表 = 单列大数组（当 shards == 1 时）

Trait Implementations

impl Clone for Layout

fn clone(&self) -> Layout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Layout

impl Debug for Layout

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

Formats the value using the given formatter.

impl PartialEq for Layout

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Layout