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DistributedCheckpointCoordinator

entrenar::train::transformer_trainer::distributed_checkpoint

Struct DistributedCheckpointCoordinator 

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pub struct DistributedCheckpointCoordinator { /* private fields */ }
Expand description

Coordinator for distributed checkpoint saves.

Tracks which workers have acknowledged the save request and coordinates the barrier.

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impl DistributedCheckpointCoordinator

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pub fn new(world_size: usize) -> Self

Create a new coordinator.

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pub fn request_save(&mut self, step: usize) -> bool

Request a checkpoint save at the given step.

Returns true if the request was accepted (no save already in progress).

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pub fn worker_ready(&mut self) -> bool

Record a worker’s acknowledgement that weights are synced.

Returns true if all workers have acknowledged (barrier complete).

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pub fn start_writing(&mut self)

Mark that writing has started (only rank 0 calls this).

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pub fn complete(&mut self)

Mark checkpoint as complete, resume training.

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pub fn resume_training(&mut self)

Reset to training phase (call after checkpoint is done).

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pub fn phase(&self) -> CheckpointPhase

Get current phase.

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pub fn checkpoint_step(&self) -> usize

Get the step at which checkpoint was requested.

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