bridge.training.gpt_step#

Module Contents#

Functions#

get_batch_from_iterator

Get a batch of data from the iterator.

get_batch

Generate a batch.

forward_step

Forward training step.

_create_loss_function

Create a partial loss function with the specified configuration.

Data#

logger

API#

bridge.training.gpt_step.logger#

‘getLogger(…)’

bridge.training.gpt_step.get_batch_from_iterator(
data_iterator: Iterable,
use_mtp: bool = False,
skip_getting_attention_mask_from_dataset: bool = True,
) → dict[str, torch.Tensor]#

Get a batch of data from the iterator.

Parameters:

  • data_iterator – The data iterator to get the batch from.

  • use_mtp – Whether Multi-Token Prediction layers are enabled.

  • skip_getting_attention_mask_from_dataset – If set, the dataset will pass a None attention mask.

Returns:

A dictionary containing the batch data.

Return type:

dict[str, torch.Tensor]

bridge.training.gpt_step.get_batch(
data_iterator: Iterable,
cfg: megatron.bridge.training.config.ConfigContainer,
use_mtp: bool = False,
) → tuple[torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor]#

Generate a batch.

Parameters:

  • data_iterator – Input data iterator

  • cfg – Configuration container

  • use_mtp – Whether Multi-Token Prediction layers are enabled

Returns:

tuple of tensors containing tokens, labels, loss_mask, attention_mask, position_ids, cu_seqlens, cu_seqlens_argmin, and max_seqlen

bridge.training.gpt_step.forward_step(
state: megatron.bridge.training.state.GlobalState,
data_iterator: Iterable,
model: megatron.core.models.gpt.GPTModel,
return_schedule_plan: bool = False,
) → tuple[torch.Tensor, functools.partial]#

Forward training step.

Parameters:

  • state – Global state for the run

  • data_iterator – Input data iterator

  • model – The GPT Model

  • return_schedule_plan (bool) – Whether to return the schedule plan instead of the output tensor

Returns:

tuple containing the output tensor and the loss function

bridge.training.gpt_step._create_loss_function(
loss_mask: torch.Tensor,
check_for_nan_in_loss: bool,
check_for_spiky_loss: bool,
) → functools.partial#

Create a partial loss function with the specified configuration.

Kept here for backward compatibility with tests and callers that patch megatron.bridge.training.gpt_step.masked_next_token_loss.