fix the cpp guard #44
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youkaichao
commented
Aug 7, 2024
Comment on lines
+118
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+147
| cpp_guard = False | ||
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||
| try: | ||
| from torch._dynamo.guards import GuardManager | ||
| cpp_guard = isinstance(cache.check_fn, GuardManager) | ||
| except Exception: | ||
| pass | ||
|
|
||
| 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.
There was a problem hiding this comment.
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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