add distributed examples (#2672)
* add distributed examples
* typo
* uncomment
* require multigpu
* add stable diffusion example
* style
* add copyright
* style
* remove tqdm
* Apply suggestions from code review
Co-authored-by: Zach Mueller <muellerzr@gmail.com>
* add comments
* remove print
* More comments
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Co-authored-by: Zach Mueller <muellerzr@gmail.com>
