Disable qnn_16a16w Llama runner test (OOM on linux.2xlarge)

[psiddh]

The test-llama-runner-qnn-linux (qnn_16a16w) job has been OOM-killed on linux.2xlarge since PR #19660 landed, blocking viable/strict from advancing for 73+ commits. Disable it while the Qualcomm team investigates the memory regression and potential accuracy issue.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/20511

• 📄 Preview Python docs built from this PR

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

❗ 2 Active SEVs

There are 2 currently active SEVs. If your PR is affected, please view them below:

• [ROCm] MI350 CI runner label rename: rebase PRs using old linux.rocm.gpu.gfx950.* labels
• [Housekeeping] Rename uw1 cluster to meta-prod-aws-uw1

❌ 3 New Failures, 3 Unrelated Failures, 1 Unclassified Failure

As of commit e620e96 with merge base aada6d7 ():

NEW FAILURES - The following jobs have failed:

• pull / test-arm-backend-no-driver (test_pytest_ops_tosa) / linux-job (gh)
  RuntimeError: Command docker exec -t 2bd7c05dfa84341579d11ac1f0031c2296f6863cf2e6aa8d48a0ab773a693912 /exec failed with exit code 1
• pull / unittest / linux / linux-job (gh)
  RuntimeError: Command docker exec -t e1fa4e3063d1f2e1b8f5a8c6d9e33d84542f1efbd5985d413175d40e84b6cce9 /exec failed with exit code 1
• pull / unittest-editable / linux / linux-job (gh)
  RuntimeError: Command docker exec -t d373e1a4c6e369f3559dcd11c3019f163cefe50078a9e4f55e5dba569ed2297d /exec failed with exit code 1

UNCLASSIFIED FAILURE - DrCI could not classify the following job because the workflow did not run on the merge base. The failure may be pre-existing on trunk or introduced by this PR:

• pull / test-arm-backend-public-api-backward-compatibility / linux-job (gh) (this job did not run on the merge base, so DrCI cannot tell whether the failure is pre-existing)
  RuntimeError: Command docker exec -t 63f623c23214d74cc3ad037ef2274dc137e61eb3e70efdd4a6ea02fe07c410e7 /exec failed with exit code 127

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-qnn-testsuite-linux / test-backend-linux (qnn, models) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following jobs failed but was present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[github-actions]

This PR needs a release notes: label

If your change should be included in the release notes (i.e. would users of this library care about this change?), please use a label starting with release notes:. This helps us keep track and include your important work in the next release notes.

To add a label, you can comment to pytorchbot, for example
@pytorchbot label "release notes: none"

For more information, see
https://github.com/pytorch/pytorch/wiki/PyTorch-AutoLabel-Bot#why-categorize-for-release-notes-and-how-does-it-work.

[Copilot]

Pull request overview

This PR temporarily removes the qnn_16a16w configuration from the Llama runner QNN Linux CI matrix to prevent OOM failures on linux.2xlarge, unblocking viable/strict while the underlying regression is investigated.

Changes:

• Drop qnn_16a16w from the pt2e_quantize matrix for the test-llama-runner-qnn-linux job in both trunk and PR workflows.
• Add a TODO note indicating the configuration should be re-enabled once the OOM issue is resolved.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/trunk.yml	Removes qnn_16a16w from the trunk CI matrix for the QNN Llama runner job.
.github/workflows/pull.yml	Removes qnn_16a16w from the PR CI matrix for the QNN Llama runner job.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[psiddh]

@winskuo-quic can you pls approve it if [test-llama-runner-qnn-linux (fp32, qnn_16a16w, qnn) / linux-job ) passes on this PR ?

[winskuo-quic]

LGTM. Thanks a lot for the support

[larryliu0820]

Have you tried linux.4xlarge?