PyTorch examples - MNIST and Bert multi gpu training

[shrinath-suresh]

Signed-off-by: Shrinath Suresh shrinath@ideas2it.com

What changes are proposed in this pull request?

New version of pytorch-lightning changed the ddp backend from accelerator to strategy.

Adding torchdata to bert example, as latest version of torchtext uses torchdata

How is this patch tested?

Existing unit tests and logs attached for both cpu and multi gpu scenarios

mlflow-mnist-mlflow-run.txt
mlflow-mnist-multi-gpu.txt
mlflow-bert-mlflow-run.txt
mlflow-bert-ag_news-cpu.txt
mlflow-bert-ag_news-multi-gpu.txt
mlflow-bert-20newsgroup-cpu.txt
mlflow-bert-20newsgroup-multi-gpu.txt

Does this PR change the documentation?

• No. You can skip the rest of this section.
• Yes. Make sure the changed pages / sections render correctly by following the steps below.

1. Check the status of the ci/circleci: build_doc check. If it's successful, proceed to the
   next step, otherwise fix it.
2. Click Details on the right to open the job page of CircleCI.
3. Click the Artifacts tab.
4. Click docs/build/html/index.html.
5. Find the changed pages / sections and make sure they render correctly.

Release Notes

Is this a user-facing change?

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• Yes. Give a description of this change to be included in the release notes for MLflow users.

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• area/artifacts: Artifact stores and artifact logging
• area/build: Build and test infrastructure for MLflow
• area/docs: MLflow documentation pages
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• rn/none - No description will be included. The PR will be mentioned only by the PR number in the "Small Bugfixes and Documentation Updates" section
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• rn/documentation - A user-facing documentation change worth mentioning in the release notes

[dbczumar]

LGTM! Thanks a bunch, @shrinath-suresh !

[dbczumar]

@shrinath-suresh Looks like there are some small failures with the example that were detected by CI: https://github.com/mlflow/mlflow/runs/6278650947?check_suite_focus=true

[shrinath-suresh]

@shrinath-suresh Looks like there are some small failures with the example that were detected by CI: https://github.com/mlflow/mlflow/runs/6278650947?check_suite_focus=true

I am looking into it

[shrinath-suresh]

@shrinath-suresh Looks like there are some small failures with the example that were detected by CI: https://github.com/mlflow/mlflow/runs/6278650947?check_suite_focus=true

There were some references in the code. Updated the READMEs as well. Its Fixed now !!

[dbczumar]

Thanks @shrinath-suresh !