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[ET-VK] Update partitioner to account for custom packed arguments #6763

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merged 1 commit into from
Nov 11, 2024

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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: #6753
^ 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/SS-JIA/140/base
ghstack PR head: https://github.com/pytorch/executorch/tree/gh/SS-JIA/140/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/main
Merge bot PR head: https://github.com/pytorch/executorch/tree/gh/SS-JIA/140/orig
@diff-train-skip-merge

## Problem

Convolution operators, especially for pointwise convolution, may have sizes like

```
W=1, H=1, C=320, N=1280
```

When represented as a texture, this tensor would normally require a texture with extents

```
(1, 1, 320 / 4 * 1280 = 102400)
```

which would normally exceed texture limits. The new partitioner system detects this and prevents nodes with similar weights from being lowered to Vulkan. However, the partitioner system does not account for the fact that the operator implementation uses a specialized prepacking algorithm which results in valid texture limits for the packed weights.

## Changes

* Add field to `OpFeatures` class to annotate that some arguments in an op should be skipped when checking against texture limits
* Update metadata tagging pass to ignore annotating constant tensor nodes so that they don't influence memory layout and storage type proposals. Without this change, the tagging pass will try to use buffer storage for the pointwise convolution since the weight can only be represented as a buffer under normal circumstances.

Differential Revision: [D65759236](https://our.internmc.facebook.com/intern/diff/D65759236/)

ghstack-source-id: 252885980
Pull Request resolved: #6753
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@facebook-github-bot facebook-github-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 Nov 11, 2024
@kirklandsign kirklandsign merged commit 6887ae9 into main Nov 11, 2024
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@kirklandsign kirklandsign deleted the gh/SS-JIA/140/orig branch November 11, 2024 21:35
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4 participants