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Put a compile lock around backward compile (#140626)

Browse Source 
Summary: https://fb.workplace.com/groups/1286739428954016/posts/1370274947267130

Test Plan:
```
hg up b5b5adce34
vizard_projects/ml_depth/scripts/run_mld.sh
```

used to crash, no longer crashes

Differential Revision: D65913100

Pull Request resolved: https://github.com/pytorch/pytorch/pull/140626
Approved by: https://github.com/ezyang
This commit is contained in:
Oguz Ulgen
2024-11-14 04:07:46 +00:00
committed by PyTorch MergeBot
parent 3ce75e7ea6
commit d32eac86f3
1 changed files with 5 additions and 1 deletions
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6
torch/_inductor/compile_fx.py
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@ -1632,7 +1632,11 @@ def compile_fx(
def bw_compiler(
model: GraphModule, example_inputs: List[InputType]
) -> Union[CompiledFxGraph, str]:
with dynamo_utils.dynamo_timed("compile_fx.<locals>.bw_compiler"):
from torch._dynamo.convert_frame import compile_lock
with dynamo_utils.dynamo_timed(
"compile_fx.<locals>.bw_compiler"
), compile_lock:
model_outputs_node = output_node(model)
if config.bw_outputs_user_visible:
model_outputs = pytree.arg_tree_leaves(*model_outputs_node.args)