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Add ptxas local memory usage warnings to cub builds#6838

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davebayer merged 1 commit intoNVIDIA:mainfrom
davebayer:ptxas_warnings_for_cub
Dec 6, 2025
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Add ptxas local memory usage warnings to cub builds#6838
davebayer merged 1 commit intoNVIDIA:mainfrom
davebayer:ptxas_warnings_for_cub

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@davebayer davebayer commented Dec 2, 2025

ptxas provides some warnings on local memory usage and register spilling to local memory.

This PR adds these warnings to cub Release builds. They are not treated as errors.

@davebayer davebayer requested a review from a team as a code owner December 2, 2025 12:47
@davebayer davebayer requested a review from griwes December 2, 2025 12:47
@github-project-automation github-project-automation bot moved this to Todo in CCCL Dec 2, 2025
@cccl-authenticator-app cccl-authenticator-app bot moved this from Todo to In Review in CCCL Dec 2, 2025
@davebayer davebayer force-pushed the ptxas_warnings_for_cub branch from 3055f61 to 1f13fda Compare December 2, 2025 12:57
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Fine for me, but I would like @alliepiper to have the last word on this.

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Okay! And do we want this for Release only or for ReWithDebInfo, too?

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I see all of these warnings are generated in the CI, maybe we will want to suppress these warnings there and keep them for local builds only

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@davebayer davebayer self-assigned this Dec 3, 2025
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Left some initial comments inline.

Will these warnings be promoted to errors with our current warming promotion flags?

@github-project-automation github-project-automation bot moved this from In Review to In Progress in CCCL Dec 4, 2025
@davebayer davebayer force-pushed the ptxas_warnings_for_cub branch from 1f13fda to 5e78a2b Compare December 4, 2025 17:24
@davebayer davebayer requested a review from a team as a code owner December 4, 2025 17:24
@davebayer davebayer requested a review from jrhemstad December 4, 2025 17:24
@davebayer davebayer force-pushed the ptxas_warnings_for_cub branch from 5e78a2b to 7369205 Compare December 4, 2025 17:30
@davebayer davebayer requested a review from alliepiper December 4, 2025 18:08
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@davebayer davebayer force-pushed the ptxas_warnings_for_cub branch from 7369205 to 4a0578f Compare December 5, 2025 14:11
@davebayer davebayer requested a review from alliepiper December 5, 2025 14:12
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@github-project-automation github-project-automation bot moved this from In Progress to In Review in CCCL Dec 5, 2025
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github-actions bot commented Dec 6, 2025

🥳 CI Workflow Results

🟩 Finished in 10h 02m: Pass: 100%/270 | Total: 9d 02h | Max: 4h 48m | Hits: 73%/373903

See results here.

@davebayer davebayer merged commit a4f4c77 into NVIDIA:main Dec 6, 2025
560 of 564 checks passed
@github-project-automation github-project-automation bot moved this from In Review to Done in CCCL Dec 6, 2025
@davebayer davebayer deleted the ptxas_warnings_for_cub branch December 6, 2025 13:04
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4 participants