Denis Yaroshevskiy 2c9c57c061 Only profiling when it's enabled. (#121404) ...

Summary:
The profiling, even when disabled, takes up about 1.5% cpu for a model I'm looking into.

This patch just splits into with/without profile runs.

The potential downside is that now the script can't enable profiling in itself. It doesn't seem to be used anywhere. If that's a crusial usecase, we can do something about it but ideally we wouldn't.

Test Plan:
Link with profiles:
https://fburl.com/scuba/strobelight_services/ihxsl7pj

```
buck2 run fbcode//caffe2/test/cpp/jit:jit
```

Reviewed By: zhxchen17

Differential Revision: D54066589

Pull Request resolved: https://github.com/pytorch/pytorch/pull/121404
Approved by: https://github.com/zhxchen17

2024-03-08 19:23:14 +00:00

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