Struct CheckpointConfig 

pub struct CheckpointConfig {
    pub strategy: CheckpointStrategy,
    pub checkpoint_attention: bool,
    pub checkpoint_ffn: bool,
    pub min_checkpoint_interval: usize,
}

Gradient checkpointing configuration

Fields

strategy: CheckpointStrategy

Checkpointing strategy

checkpoint_attention: bool

Whether to checkpoint attention

checkpoint_ffn: bool

Whether to checkpoint feed-forward

min_checkpoint_interval: usize

Minimum layers between checkpoints

Implementations

impl CheckpointConfig

pub fn uniform(interval: usize) -> Self

Create a uniform checkpointing configuration

Arguments

• interval - Checkpoint every N layers (e.g., 2 means checkpoint layers 0, 2, 4, …)

pub fn selective(layers: Vec<usize>) -> Self

Create a selective checkpointing configuration

Arguments

• layers - Specific layer indices to checkpoint

pub fn dynamic(num_layers: usize, memory_fraction: f64) -> Result<Self>

Create a dynamic checkpointing configuration

Arguments

• num_layers - Total number of layers in the model
• memory_fraction - Target memory usage as fraction of full storage (0.0 - 1.0)

pub fn none() -> Self

Disable checkpointing

pub fn with_checkpoint_attention(self, checkpoint: bool) -> Self

Set whether to checkpoint attention sublayers

pub fn with_checkpoint_ffn(self, checkpoint: bool) -> Self

Set whether to checkpoint feed-forward sublayers

pub fn with_min_interval(self, interval: usize) -> Self

Set minimum interval between checkpoints

pub fn should_checkpoint(&self, layer_idx: usize) -> bool

Check if a specific layer should be checkpointed

pub fn memory_savings(&self, num_layers: usize) -> f64

Calculate expected memory savings

Returns the fraction of activation memory saved (0.0 - 1.0)

pub fn compute_overhead(&self, num_layers: usize) -> f64

Calculate expected compute overhead

Returns the multiplicative factor for compute (1.0 = no overhead)

pub fn validate(&self) -> Result<()>

Validate configuration

pub fn summary(&self) -> String

Get human-readable summary

Trait Implementations

impl Clone for CheckpointConfig

fn clone(&self) -> CheckpointConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CheckpointConfig

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

Formats the value using the given formatter.

impl Default for CheckpointConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CheckpointConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CheckpointConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.