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- """Logging utilities for Dynamo and Inductor.
- This module provides specialized logging functionality including:
- - Step-based logging that prepends step numbers to log messages
- - Progress bar management for compilation phases
- - Centralized logger management for Dynamo and Inductor components
- The logging system helps track the progress of compilation phases and provides structured
- logging output for debugging and monitoring.
- """
- import itertools
- import logging
- from collections.abc import Callable
- from typing import Any
- from torch.hub import _Faketqdm, tqdm
- # Disable progress bar by default, not in dynamo config because otherwise get a circular import
- disable_progress = True
- # Return all loggers that torchdynamo/torchinductor is responsible for
- def get_loggers() -> list[logging.Logger]:
- return [
- logging.getLogger("torch.fx.experimental.symbolic_shapes"),
- logging.getLogger("torch._dynamo"),
- logging.getLogger("torch._inductor"),
- ]
- # Creates a logging function that logs a message with a step # prepended.
- # get_step_logger should be lazily called (i.e. at runtime, not at module-load time)
- # so that step numbers are initialized properly. e.g.:
- # @functools.cache
- # def _step_logger():
- # return get_step_logger(logging.getLogger(...))
- # def fn():
- # _step_logger()(logging.INFO, "msg")
- _step_counter = itertools.count(1)
- # Update num_steps if more phases are added: Dynamo, AOT, Backend
- # This is very inductor centric
- # _inductor.utils.has_triton() gives a circular import error here
- if not disable_progress:
- try:
- import triton # noqa: F401
- num_steps = 3
- except ImportError:
- num_steps = 2
- pbar = tqdm(total=num_steps, desc="torch.compile()", delay=0)
- def get_step_logger(logger: logging.Logger) -> Callable[..., None]:
- if not disable_progress:
- pbar.update(1)
- if not isinstance(pbar, _Faketqdm):
- pbar.set_postfix_str(f"{logger.name}")
- step = next(_step_counter)
- def log(level: int, msg: str, **kwargs: Any) -> None:
- if "stacklevel" not in kwargs:
- kwargs["stacklevel"] = 2
- logger.log(level, "Step %s: %s", step, msg, **kwargs)
- return log
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