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docs: Document GPU backend and cuDF compatibility limitations#3813

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ianna merged 1 commit intoscikit-hep:mainfrom
aashirvad08:docs-gpu-cudf-compat
Jan 22, 2026
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docs: Document GPU backend and cuDF compatibility limitations#3813
ianna merged 1 commit intoscikit-hep:mainfrom
aashirvad08:docs-gpu-cudf-compat

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@aashirvad08 aashirvad08 commented Jan 21, 2026

This PR documents known limitations and compatibility constraints of the GPU backend when used with cuDF.
It clarifies supported usage, CI vs local environment differences, and common error symptoms based on recent debugging experience.

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codecov bot commented Jan 21, 2026 •
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Codecov Report

❌ Patch coverage is 26.66667% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.48%. Comparing base (d47fbef) to head (2088e97).
⚠️ Report is 3 commits behind head on main.

Files with missing lines Patch % Lines
src/awkward/contents/listoffsetarray.py 0.00% 7 Missing ⚠️
src/awkward/contents/recordarray.py 50.00% 4 Missing ⚠️
Additional details and impacted files
Files with missing lines Coverage Δ
src/awkward/contents/recordarray.py 84.77% <50.00%> (-0.36%) ⬇️
src/awkward/contents/listoffsetarray.py 81.03% <0.00%> (-0.11%) ⬇️

... and 4 files with indirect coverage changes

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ikrommyd commented Jan 21, 2026 •
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I don't understand what this is, this just touches some random lines of code. Did you use the wrong branch?

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aashirvad08 commented Jan 22, 2026

I’ve force-pushed a cleaned version of this PR that now contains documentation only, matching the original intent.
The cuDF compatibility fixes were split out locally and will be proposed independently if appropriate.
Thanks for flagging the scope issue.

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github-actions bot commented Jan 22, 2026

The documentation preview is ready to be viewed at http://preview.awkward-array.org.s3-website.us-east-1.amazonaws.com/PR3813

ianna
ianna approved these changes Jan 22, 2026
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@X0708a - This is very useful! Thank you very much for investing your time and documenting it. The tests will not run on this PR - I will merge it. Thanks!

@ianna ianna changed the title Document GPU backend and cuDF compatibility limitations docs: Document GPU backend and cuDF compatibility limitations Jan 22, 2026
@ianna ianna enabled auto-merge (squash) January 22, 2026 08:40
@ianna ianna disabled auto-merge January 22, 2026 08:46
@ianna ianna merged commit ab0120d into scikit-hep:main Jan 22, 2026
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@aashirvad08 @ikrommyd @ianna