Struct GroupLayout 

pub struct GroupLayout {
    pub num_layers: u32,
    pub num_blocks: u32,
    pub num_kv_heads: u16,
    pub group_stride: u64,
    pub fs_block_size: u64,
}

Fields

num_layers: u32

num_blocks: u32

num_kv_heads: u16

group_stride: u64

2026-09-25: block_size × head_dim × elem_bytes, rounded up to a multiple of fs_block_size.

fs_block_size: u64

2026-09-25: The alignment unit group_stride is padded to.

Implementations

impl GroupLayout

pub fn new( num_layers: u32, num_blocks: u32, num_kv_heads: u16, block_size: u32, head_dim: u32, elem_bytes: u32, fs_block_size: u64, ) -> Self

pub fn bytes_per_layer(&self) -> u64

2026-09-25: Bytes of one layer’s file: K and V of every block and kv_head.

pub fn file_offset(&self, key: GroupKey) -> u64

2026-09-25: Offset of key within its layer’s file. Debug builds assert that block and kv_head are inside the layout.

pub fn group_id(&self, key: GroupKey) -> GroupId

2026-09-25: Dense GroupId for key across all layers.

pub fn group_bytes(&self) -> u64

2026-09-25: Bytes one group occupies on disk: group_stride.

pub fn block_bytes(&self) -> u64

2026-09-25: Bytes in one block: K and V of every kv_head, each at group_stride pitch. The unit of the StorageBackend block methods.

Trait Implementations

impl Clone for GroupLayout

fn clone(&self) -> GroupLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupLayout

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

Formats the value using the given formatter.

impl Copy for GroupLayout