mirror of
https://github.com/facebookresearch/blt.git
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0ffe2ab685
- Create a common class to use in all inheritance for states - Add a limit iterator that we can use in evals - Modify ArrowFileIterator behavior to not do arrow path inference if file_format='json' - Make EvalArgs valid - Move testing iterators to a common directory to allow usage in multiple test files - Make it so that SequenceIterator can take a None rng_state, to disable all rng ops (for eval mainly) Test Plan: - `pytest bytelatent` - `python -m bytelatent.train config=../internal-blt/configs/entropy_model.yaml logging.wandb=null eval=null`
39 lines
1 KiB
Python
39 lines
1 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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from bytelatent.data.iterators.abstract_iterator import (
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PydanticIteratorState,
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StatefulIterator,
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)
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from bytelatent.data.iterators.arrow_iterator import (
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ArrowFileIterator,
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ArrowFileIteratorState,
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)
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class LoopingIteratorState(PydanticIteratorState):
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file_iterator_state: ArrowFileIteratorState
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epoch: int
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def build(self) -> "LoopingIterator":
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return LoopingIterator(
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file_iterator=self.file_iterator_state.build(),
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epoch=self.epoch,
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)
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class LoopingIterator(StatefulIterator):
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def __init__(self, file_iterator: ArrowFileIterator, epoch: int = -1):
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self.file_iterator = file_iterator
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self.epoch = epoch
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def get_state(self):
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return LoopingIteratorState(
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file_iterator_state=self.file_iterator.get_state(), epoch=self.epoch
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)
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def create_iter(self):
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while True:
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self.epoch += 1
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iterator = self.file_iterator.create_iter()
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yield from iterator
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