Struct ExpertLayout 

pub struct ExpertLayout {
    pub num_layers: u32,
    pub num_experts: u32,
    pub record_stride: u64,
    pub fs_block_size: u64,
}

Deterministic file geometry for a directory of per-MoE-layer expert files.

One file per MoE layer (experts_{layer:05}.xpr), each holding num_experts fixed-stride records back to back. record_stride is the raw record size rounded up to fs_block_size (O_DIRECT requires the read offset and length to be block-aligned). Mirrors group::GroupLayout’s fd/offset/*_bytes surface so the KV backends drive it verbatim.

Fields

num_layers: u32

num_experts: u32

record_stride: u64

Fixed per-expert record stride on disk (a multiple of fs_block_size).

fs_block_size: u64

Implementations

impl ExpertLayout

pub fn from_spec( num_layers: u32, num_experts: u32, spec: &ExpertRecordSpec, fs_block_size: u64, ) -> Self

Build a layout from a record spec. record_stride is spec.raw_bytes() rounded up to fs_block_size.

pub fn bytes_per_layer(&self) -> u64

Bytes occupied by one MoE layer’s file (all experts, back to back).

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

File offset of key’s record within its layer file.

pub fn record_id(&self, key: ExpertKey) -> ExpertRecordId

Dense record id across the whole model (layer-major).

pub fn record_bytes(&self) -> u64

Bytes of one record on disk (== record_stride); the fixed read size.

Trait Implementations

impl Clone for ExpertLayout

fn clone(&self) -> ExpertLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExpertLayout

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

Formats the value using the given formatter.

impl PartialEq for ExpertLayout

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ExpertLayout

impl Eq for ExpertLayout

impl StructuralPartialEq for ExpertLayout