Summary:
## No Functional Change
- Refactor Subprocess Handler into a separate folder for easier subclassing
- SubprocessHandler
- added `local_rank_id` in `SubprocessHandler` to make it available as a field in the class
- pass in `local_rank_id` from subprocess start
Test Plan: No functional changes.
Differential Revision: D54038627
#suppress-api-compatibility-check
Pull Request resolved: https://github.com/pytorch/pytorch/pull/120373
Approved by: https://github.com/kurman
Summary:
Pull Request resolved: https://github.com/pytorch/elastic/pull/148
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56811
Moves docs sphinx `*.rst` files from the torchelastic repository to torch. Note: only moves the rst files the next step is to link it to the main pytorch `index.rst` and write new `examples.rst`
Reviewed By: H-Huang
Differential Revision: D27974751
fbshipit-source-id: 8ff9f242aa32e0326c37da3916ea0633aa068fc5