Propogate dp last changes from mcore

[ryantwolf]

What does this PR do ?

Adds support for DP-last in NeMo like in megatron core.

Collection: [Note which collection this PR will affect]

Changelog

• Updates rank order from tp-pp-dp to tp-cp-ep-pp-dp in parallel_state.initialize_model_parallel when use_tp_pp_dp_mapping is specified.
• Propagates new assert check from mcore for DP last into NeMo
• Adds use_tp_pp_dp_mapping to ParallelismConfig and ensures it is passed to MegatronStrategy and FabricMegatronStrategy
• Fixes a bunch of Pylint and Flake8 errors in the files.

Usage

• You can potentially add a usage example below

# Add a code snippet demonstrating how to use this 

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• Bugfix
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Additional Information

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[github-actions]

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

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Your code was analyzed with PyLint. The following annotations have been identified:

************* Module nemo.collections.nlp.modules.common.megatron.megatron_init
nemo/collections/nlp/modules/common/megatron/megatron_init.py:268:0: C0301: Line too long (122/119) (line-too-long)
nemo/collections/nlp/modules/common/megatron/megatron_init.py:269:0: C0301: Line too long (133/119) (line-too-long)
nemo/collections/nlp/modules/common/megatron/megatron_init.py:270:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/modules/common/megatron/megatron_init.py:373:0: C0301: Line too long (166/119) (line-too-long)
nemo/collections/nlp/modules/common/megatron/megatron_init.py:88:0: C0116: Missing function or method docstring (missing-function-docstring)
************* Module nemo.collections.nlp.parts.nlp_overrides
nemo/collections/nlp/parts/nlp_overrides.py:219:0: C0301: Line too long (140/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:224:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:240:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:431:0: C0301: Line too long (136/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:517:0: C0301: Line too long (152/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:741:0: C0301: Line too long (140/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:746:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1012:0: C0301: Line too long (128/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1016:0: C0301: Line too long (141/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1020:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1077:0: C0301: Line too long (135/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1204:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:1786:0: C0301: Line too long (152/119) (line-too-long)
nemo/collections/nlp/parts/nlp_overrides.py:255:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:388:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:432:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:613:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:629:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:648:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:889:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:1008:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:1697:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:1785:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/parts/nlp_overrides.py:18:0: W0611: Unused import re (unused-import)
nemo/collections/nlp/parts/nlp_overrides.py:107:4: W0611: Unused tensorstore imported from megatron.core.dist_checkpointing.strategies (unused-import)
************* Module nemo.lightning.megatron_init
nemo/lightning/megatron_init.py:270:0: C0301: Line too long (122/119) (line-too-long)
nemo/lightning/megatron_init.py:271:0: C0301: Line too long (133/119) (line-too-long)
nemo/lightning/megatron_init.py:272:0: C0301: Line too long (121/119) (line-too-long)
nemo/lightning/megatron_init.py:375:0: C0301: Line too long (166/119) (line-too-long)
nemo/lightning/megatron_init.py:88:0: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.73/10

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Mitigation guide:

• Add sensible and useful docstrings to functions and methods
• For trivial methods like getter/setters, consider adding # pylint: disable=C0116 inside the function itself
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By applying these rules, we reduce the occurance of this message in future.

Thank you for improving NeMo's documentation!

[akoumpa]

LGTM, thanks.