[CI] Small fixes for DeepSpeed.

[tchaton]

What does this PR do?

Fixes #<issue_number>

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[codecov]

Codecov Report

Merging #7823 (4794194) into master (36770b2) will decrease coverage by 5%.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master   #7823    +/-   ##
=======================================
- Coverage      93%     88%    -5%     
=======================================
  Files         199     199            
  Lines       13016   13026    +10     
=======================================
- Hits        12051   11438   -613     
- Misses        965    1588   +623     

[SeanNaren]

I think for ZeRO 2/3, autocast isn't used as we rely on a custom DeepSpeed FP16Optimizer to handle this, which converts the entire model to half iirc.

[tchaton]

With newer DeepSpeed version, they check the weights are created in half precision and currently fails in CI.

[SeanNaren]

oh very interesting! i'll check myself when I get time, do they throw an error if the weights are in half precision or not in half precision?

[SeanNaren]

If you go through the special tests (for some reason they pass even though a test fails) there still is a failing test. I've removed a line in #7841 and will debug there, as I'm unsure why the changes in this PR are necessary and need more information since the version of DeepSpeed shouldn't have changed

[carmocca]

If you go through the special tests (for some reason they pass even though a test fails) there still is a failing test.

@awaelchli you looked at this already somewhere else, right?

[awaelchli]

Yes here #7790

[tchaton]

Hey @SeanNaren,

Closing this PR for now.

Best,
T.C