[QNN] Harden SDK download and skip auto-download in CI#18416
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abhinaykukkadapu merged 1 commit intoMar 23, 2026
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/18416
Note: Links to docs will display an error until the docs builds have been completed. ⏳ No Failures, 90 PendingAs of commit 29e8b7f with merge base 6d04ed3 ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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Summary: Gracefully skip QNN backend when the download server is unreachable (e.g. devvms without proxy) and harden the SDK download against flaky connections. - Add --check flag to download_qnn_sdk.py that probes server reachability via requests.head() (proxy-aware) - Skip QNN in GitHub Actions CI unless QNN_SDK_ROOT is set - Increase download retries (3→5) with exponential backoff and timeouts - Validate archive integrity after download to catch truncation - Verify downloaded size matches Content-Length to trigger retries on incomplete downloads Test Plan: Tested on devvm without proxy (QNN skipped), with proxy (QNN downloaded), with QNN_SDK_ROOT set (QNN enabled), and with -DEXECUTORCH_BUILD_QNN=ON.
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shoumikhin
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The 1.3GB QNN SDK download fails in GitHub Actions CI due to ChunkedEncodingError after exhausting 3 retries. The connection drops around 80% completion consistently.
--checkflag to download_qnn_sdk.py that probes server reachability via requests.head() (proxy-aware)Test Plan:
Local
pip install -e .still auto-downloads QNN SDK on Linux x86_64. CI builds without QNN_SDK_ROOT skip QNN gracefully with a status message.