Arm Backend: add .pte file visualization in Model Explorer

[tgonzalezorlandoarm]

Summary

Modify examples/arm/run.sh and examples/arm/visualize.py to be able to trigger visualization (pte or tosa) of the model.
For the Ethos-U delegate, we need to pass down intermediate .tosa artifacts. Invoke the PTE adapter API to do that.

Test plan

I tested with

1. ./examples/arm/run.sh --model_name=mv2 --model_explorer --visualize_pte
2. ./examples/arm/run.sh --model_name=mv2 --target="vgf" --model_explorer --visualize_pte
3. ./examples/arm/run.sh --model_name=mv2 --model_explorer --visualize_tosa

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

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❌ 3 New Failures, 7 Unrelated Failures

As of commit 4de16b3 with merge base db895e9 ():

NEW FAILURES - The following jobs have failed:

• Apple / build-benchmark-app / macos-job (gh)
  No files were found with the provided path: /Users/runner/work/_temp/artifacts/. No artifacts will be uploaded.
• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh)
  RuntimeError: Command docker exec -t dc1e5a55dbdec490d43209cfa1911bcea9a8045c621ff13d13e5277de809193e /exec failed with exit code 1
• trunk / test-arm-backend (test_pytest_models_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t 1d4a0eec67e28b14a4d400c7ef5e09c03d3aa89673eecb321b2b07dc9635de3f /exec failed with exit code 1

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

• trunk / test-huggingface-transformers-macos (olmo-1b|coreml_fp32_gpu|--quantize) / macos-job (gh) (similar failure)
  The process '/opt/homebrew/bin/git' failed with exit code 128

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

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

• Apple / build-frameworks-ios / macos-job (gh) (trunk failure)
  No files were found with the provided path: /Users/runner/work/_temp/artifacts/. No artifacts will be uploaded.
• Build Presets / apple (profiling) / build (gh) (trunk failure)
  The process '/opt/homebrew/bin/git' failed with exit code 128
• trunk / test-coreml-delegate / macos-job (gh) (trunk failure)
  The process '/opt/homebrew/bin/git' failed with exit code 128
• trunk / test-huggingface-transformers-macos (distilbert|coreml_fp32_gpu|--quantize) / macos-job (gh) (trunk failure)
  The process '/opt/homebrew/bin/git' failed with exit code 128
• trunk / test-multimodal-macos (gemma3-4b) / macos-job (gh) (trunk failure)
  The process '/opt/homebrew/bin/git' failed with exit code 128

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

• pull / android / run-emulator (gh) (#16137)
  Timeout waiting for emulator to boot.

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[Copilot]

Pull request overview

This PR adds visualization support for PTE (PyTorch Export) files in Model Explorer for the Arm backend, complementing the existing TOSA visualization capability. Users can now choose between visualizing TOSA flatbuffer models or PTE models with their delegates through new command-line flags.

Key changes:

• Modified run.sh to add --visualize_pte and --visualize_tosa flags for choosing visualization format
• Updated visualize.py to handle both PTE and TOSA visualization modes with appropriate adapter logic
• Added pte-adapter-model-explorer dependency for PTE visualization support

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
examples/arm/visualize.py	Refactored to support both PTE and TOSA visualization modes with new configuration functions and command-line argument handling
examples/arm/run.sh	Added flags for selecting visualization format (PTE or TOSA) and updated help text and logic accordingly
backends/arm/requirements-arm-ethos-u.txt	Added pte-adapter-model-explorer dependency for PTE visualization

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[tgonzalezorlandoarm]

@pytorchbot label ciflow/trunk

[pytorch-bot]

To add these label(s) (ciflow/trunk) to the PR, please first approve the workflows that are awaiting approval (scroll to the bottom of this page).

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[tgonzalezorlandoarm]

@pytorchbot label "partner: arm"

[tgonzalezorlandoarm]

@pytorchbot label "release notes: arm"

[pytorch-bot]

To add the ciflow label ciflow/trunk please first approve the workflows that are awaiting approval (scroll to the bottom of this page).

This helps ensure we don't trigger CI on this PR until it is actually authorized to do so. Please ping one of the reviewers if you do not have access to approve and run workflows.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

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[zingo]

Known unrelated Arm fails
FAILED backends/arm/test/models/test_T5ForConditionalGeneration_arm.py::test_T5ForConditionalGeneration_tosa_FP
FAILED backends/arm/test/models/test_T5ForConditionalGeneration_arm.py::test_T5ForConditionalGeneration_tosa_INT

Waiting on one more Arm test (and all other tests to finish)

[zingo]

Oter fails are also unrelated