Struct LayoutConfig 

pub struct LayoutConfig {
    pub num_blocks: usize,
    pub num_layers: usize,
    pub outer_dim: usize,
    pub page_size: usize,
    pub inner_dim: usize,
    pub alignment: usize,
    pub dtype_width_bytes: usize,
    pub num_heads: Option<usize>,
}

Configuration for block layouts.

The #[validate] attributes on fields are checked during layout construction (e.g., FullyContiguousLayout::new_internal(), LayerSeparateLayout::new_internal()), not at builder .build() time.

Fields

num_blocks: usize

Number of blocks

num_layers: usize

Number of layers

outer_dim: usize

Number of outer dimensions

page_size: usize

Page size

inner_dim: usize

Inner dimension

alignment: usize

Alignment

dtype_width_bytes: usize

Data type

num_heads: Option<usize>

Number of attention heads (optional).

When provided, enables KvBlockLayout support for universal formats. The head dimension can be computed as: inner_dim / (page_size * num_heads).

Required for:

• Universal layout transformations
• Per-head memory region access

Implementations

impl LayoutConfig

pub fn builder() -> LayoutConfigBuilder

Builder for LayoutConfig

pub fn required_bytes(&self) -> usize

pub fn bytes_per_block(&self) -> usize

Get the number of bytes per block.

This is the total size of a single block across all layers and outer dimensions.

pub fn head_dim(&self) -> Option<usize>

Get the head dimension if num_heads is specified.

Computes inner_dim / (page_size * num_heads).

Returns

Some(head_dim) if num_heads is set, None otherwise.

pub fn supports_kv_block_layout(&self) -> bool

Check if this config supports KvBlockLayout operations.

Returns true if num_heads is set and the dimensions are valid (inner_dim is evenly divisible by page_size * num_heads).

pub fn validate_for_kv_block_layout(&self) -> Result<(), ValidationError>

Validate that this config supports KvBlockLayout operations.

Returns

Ok(()) if valid, Err with details otherwise.

Trait Implementations

impl Clone for LayoutConfig

fn clone(&self) -> LayoutConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutConfig

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LayoutConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for LayoutConfig

impl PartialEq for LayoutConfig

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for LayoutConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LayoutConfig

impl Validate for LayoutConfig

fn validate(&self) -> Result<(), ValidationErrors>

impl<'v_a> ValidateArgs<'v_a> for LayoutConfig

type Args = ()

fn validate_with_args(&self, args: Self::Args) -> Result<(), ValidationErrors>