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youkaichao
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Aug 7, 2024
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| cpp_guard = False | ||
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| try: | ||
| from torch._dynamo.guards import GuardManager | ||
| cpp_guard = isinstance(cache.check_fn, GuardManager) | ||
| except Exception: | ||
| pass | ||
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| if not cpp_guard: | ||
| guard = cache.check_fn.code_parts | ||
| freevar_names = cache.check_fn.__code__.co_freevars | ||
| freevar_values = [x.cell_contents for x in cache.check_fn.__closure__] | ||
| else: | ||
| def visit(root, ans): | ||
| for x in root.get_leaf_guards(): | ||
| for verbose_str in x.verbose_code_parts(): | ||
| verbose_str = verbose_str.split("#")[0].strip() | ||
| ans.append(verbose_str) | ||
| for child in root.get_child_managers(): | ||
| visit(child, ans) | ||
| guard = [] | ||
| root = cache.check_fn.root | ||
| visit(root, guard) | ||
| if cache.check_fn.closure_vars is None: | ||
| freevar_names = tuple() | ||
| freevar_values = [] | ||
| else: | ||
| freevar_names = tuple(cache.check_fn.closure_vars.keys()) | ||
| freevar_values = list(cache.check_fn.closure_vars.values()) | ||
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@anijain2305 can you help check if these lines are correct for getting all the guards when cpp guards are enabled?
I got thousands of guards from my experiments.
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Yes, these lines seem correct to me. We have increased the number of guards by more than order of magnitude since February. This is by enabling two flags
guard_nn_modules = True
and more recently
inline_inbuilt_nn_modules = True
These flags make Dynamo tracing safer than before.
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