[ExecuTorch][WebGPU] Add per-pass dispatch ordering + scratch buffer tests#20194
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JulianCloudNTH merged 1 commit intoJun 10, 2026
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…tests Pull Request resolved: #20080 Native unit tests for two runtime enablers: per-pass compute-dispatch ordering (D107543258) and graph-owned scratch buffers (D107543259). `test/native/test_dispatch_order.cpp` exercises multi-dispatch read-after-write ordering through a single `execute()` using dependency chains -- a single-input `add` self-chain and a heterogeneous `rms_norm` -> `add` chain, both lowered via `VulkanPartitioner` -- comparing GPU output to a torch-computed golden per element. `test/native/test_scratch_buffer.cpp` is a white-box test of `WebGPUGraph::create_scratch_buffer` (no black-box consumer exists below the SDPA op): allocation + zero-size guard, copy round-trip, a compute Storage round-trip (its actual use), and a create/destroy lifecycle stress. Authored with assistance from Claude. ghstack-source-id: 391979580 @exported-using-ghexport Differential Revision: [D107576199](https://our.internmc.facebook.com/intern/diff/D107576199/)
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/20194
Note: Links to docs will display an error until the docs builds have been completed. ❌ 2 New Failures, 11 Pending, 1 Unrelated FailureAs of commit df60899 with merge base af92b60 ( NEW FAILURES - The following jobs have failed:
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This PR was created by the merge bot to help merge the original PR into the main branch.
ghstack PR number: #20080 by @JulianCloudNTH
^ Please use this as the source of truth for the PR details, comments, and reviews
ghstack PR base: https://github.com/pytorch/executorch/tree/gh/JulianCloudNTH/15/base
ghstack PR head: https://github.com/pytorch/executorch/tree/gh/JulianCloudNTH/15/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/gh/JulianCloudNTH/14/orig
Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/JulianCloudNTH/15/orig
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