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Move undelegated constants #13606

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Move undelegated constants #13606

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@lucylq lucylq commented Aug 22, 2025 •
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Currently, the xnnpack + lora + program-data separation flow moves all delegated constants to the .ptd file. This change moves the undelegated constants as well, reducing the pte file bloat.

Run export_lora.sh from meta-pytorch/executorch-examples#54

-rw-r--r-- 1 lfq users 5994013600 Aug 22 13:32 foundation.ptd
-rw-r--r-- 1 lfq users   27628928 Aug 22 13:32 llama_3_2_1B_lora.pte
-rw-r--r-- 1 lfq users 5994013600 Aug 22 13:30 llama_3_2_1B.ptd
-rw-r--r-- 1 lfq users     317248 Aug 22 13:30 llama_3_2_1B.pte

fp32 Weights: ~6GB
Program: ~300KB
Lora adapter weights: ~27MB

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pytorch-bot bot commented Aug 22, 2025 •
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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/13606

Note: Links to docs will display an error until the docs builds have been completed.

❌ 1 New Failure

As of commit d69aa0f with merge base fe84495 (image):

NEW FAILURE - The following job has failed:

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@meta-cla meta-cla bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Aug 22, 2025
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lucylq
lucylq commented Aug 22, 2025
View reviewed changes
exir/program/_program.py
SpecPropPass(),
# ExecuTorch backend ops are unable to handle unbacked symints. So after
# this pass, passes cannot be Interpreter-based, because it will fail if
# there exists an unbacked symint operation.
EdgeToBackendOpsPass(),
RemoveGraphAssertsPass(),
*config.passes,
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@lucylq lucylq Aug 22, 2025 •
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external_constants_pass has to run after SpecPropPass, which populates the tensor names. See if CI passes, not sure if this will break anything.

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@lucylq has imported this pull request. If you are a Meta employee, you can view this in D80840528.

@lucylq lucylq requested a review from mergennachin August 22, 2025 20:40
@lucylq lucylq force-pushed the lfq.lora-constants branch from 33c43bf to ffa0a57 Compare August 22, 2025 20:58
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@lucylq has imported this pull request. If you are a Meta employee, you can view this in D80840528.

@lucylq lucylq force-pushed the lfq.lora-constants branch from ffa0a57 to d69aa0f Compare August 22, 2025 21:16
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@lucylq has imported this pull request. If you are a Meta employee, you can view this in D80840528.

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