accelerate: add page (#11340)

* accelerate: add page

* accelerate: modify command description

* accelerate: update template format

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* accelerate: remove inappropriate description

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* accelerate: update command description

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* accelerate: fix typo and update appropriate description

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

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Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/common/accelerate.md

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+# Accelerate
+
+> Accelerate is a library that enables the same PyTorch code to be run across any distributed configuration.
+> More information: <https://huggingface.co/docs/accelerate/index>.
+
+- Print environment information:
+
+`accelerate env`
+
+- Interactively create a configuration file:
+
+`accelerate config`
+
+- Print the estimated GPU memory cost of running a huggingface model with different data types:
+
+`accelerate estimate-memory {{name/model}}`
+
+- Test an Accelerate configuration file:
+
+`accelerate test --config_file {{path/to/config.yaml}}`
+
+- Run a model on CPU with Accelerate:
+
+`accelerate launch {{path/to/script.py}} {{--cpu}}`
+
+- Run a model on multi-GPU with Accelerate, with 2 machines:
+
+`accelerate launch {{path/to/script.py}} --multi_gpu --num_machines {{2}}`