Add optimized op_where - #8866

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swolchok merged 28 commits into
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Add optimized op_where#8866
swolchok merged 28 commits into
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@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

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swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

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Looks good to me.

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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

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I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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Add optimized op_where - #8866

Merged
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head

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@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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@swolchok

swolchok commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

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As of commit e52508d with merge base cca6917 (image):

NEW FAILURE - The following job has failed:

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swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
@swolchok

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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

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I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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Add optimized op_where - #8866

Merged
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head

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@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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@swolchok

swolchok commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

❌ 1 New Failure

As of commit e52508d with merge base cca6917 (image):

NEW FAILURE - The following job has failed:

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

swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
@swolchok

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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

Copy link
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ContributorAuthor

I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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Skip to content

Add optimized op_where - #8866

Merged
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
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gh/swolchok/302/head

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@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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[ghstack-poisoned]
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@swolchok

swolchok commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

❌ 1 New Failure

As of commit e52508d with merge base cca6917 (image):

NEW FAILURE - The following job has failed:

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

swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

@digantdesaidigantdesai left a comment

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

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I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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Add optimized op_where - #8866

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swolchok merged 28 commits into
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gh/swolchok/302/head
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Merged

Add optimized op_where#8866
swolchok merged 28 commits into
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gh/swolchok/302/head

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@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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@swolchok

swolchok commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

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NEW FAILURE - The following job has failed:

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swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
@swolchok

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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

Copy link
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ContributorAuthor

I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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@swolchok@digantdesai@manuelcandales@facebook-github-bot
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Add optimized op_where - #8866

Merged
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head

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@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

[ghstack-poisoned]
[ghstack-poisoned]
[ghstack-poisoned]
[ghstack-poisoned]
@swolchok

swolchok commented Mar 1, 2025

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pytorch-botBot commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

❌ 1 New Failure

As of commit e52508d with merge base cca6917 (image):

NEW FAILURE - The following job has failed:

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

swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

Copy link
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ContributorAuthor

Choose a reason for hiding this comment

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

@digantdesaidigantdesai left a comment

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
@swolchok

Copy link
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ContributorAuthor

unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

Copy link
Copy Markdown
ContributorAuthor

I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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Labels

CLA SignedThis label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed.release notes: ops & kernelsChanges to the opset and any new / changed kernel implementations

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Development

Successfully merging this pull request may close these issues.

4 participants

@swolchok@digantdesai@manuelcandales@facebook-github-bot
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Add optimized op_where - #8866

Merged
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head

Conversation

@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

[ghstack-poisoned]
[ghstack-poisoned]
[ghstack-poisoned]
[ghstack-poisoned]
@swolchok

swolchok commented Mar 1, 2025

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@pytorch-bot

pytorch-botBot commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

❌ 1 New Failure

As of commit e52508d with merge base cca6917 (image):

NEW FAILURE - The following job has failed:

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

swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

Copy link
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ContributorAuthor

Choose a reason for hiding this comment

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

@digantdesaidigantdesai left a comment

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Looks good to me.

[ghstack-poisoned]
swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
[ghstack-poisoned]
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
@swolchok

Copy link
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ContributorAuthor

unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

@swolchok

Copy link
Copy Markdown
ContributorAuthor

I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

@swolchok
swolchok merged commit a2c0b59 into mainMar 6, 2025
@swolchok
swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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Labels

CLA SignedThis label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed.release notes: ops & kernelsChanges to the opset and any new / changed kernel implementations

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Development

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Add optimized op_where - #8866

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swolchok merged 28 commits into
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gh/swolchok/302/head
Mar 6, 2025
Merged

Add optimized op_where#8866
swolchok merged 28 commits into
mainfrom
gh/swolchok/302/head

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@swolchok

@swolchokswolchok commented Mar 1, 2025

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It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.

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@swolchok

swolchok commented Mar 1, 2025

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8866

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

❌ 1 New Failure

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NEW FAILURE - The following job has failed:

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swolchok added a commit that referenced this pull request Mar 1, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: ebe8bee
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
@facebook-github-botfacebook-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 Mar 1, 2025
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swolchok added a commit that referenced this pull request Mar 3, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: aaf6617
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Comment on lines +63 to +64
data_out[out_index] =
data_cond[cond_index] ? data_a[a_index] : data_b[b_index];

@digantdesaidigantdesaiMar 4, 2025

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Love how clean it reads :)

Couple of high level comments,

  • Not too familiar with how people use this op i.e. any common case we see often in the wild, but are there any short-circuits we can do to avoid coming here?
  • Similarly, depending on the condition, if we know we are biased towards A vs. B, we can first copy A to the result and then go through data_cond and pick B.
  • Lastly, I am assuming we want to do SIMD later, if we do then we can use predicates, that should make it less "branchy". It may not help much with load/stores though.

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if we know we are biased towards A vs. B

we can't possibly know this in general.

SIMD later

not currently on my agenda, but I may have to come back.

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Looks good to me.

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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 7e5ac3a
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 4, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: c88f938
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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swolchok added a commit that referenced this pull request Mar 5, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 1a0f6d2
ghstack-comment-id: 2691808920
Pull Request resolved: #8866
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Base automatically changed from gh/swolchok/301/head to mainMarch 6, 2025 03:06
@swolchokswolchok changed the title first crack at optimized op_whereAdd optimized op_whereMar 6, 2025
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unittest-editable failure is a known flake, so noting that we have green CI. I think this will cause -Wunused -Werror builds to fail though, so I need to fix that before merging.

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I think this will cause -Wunused -Werror builds to fail though

Checked, works fine, I misread my own code.

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swolchok merged commit a2c0b59 into mainMar 6, 2025
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swolchok deleted the gh/swolchok/302/head branch March 6, 2025 18:37
zonglinpeng pushed a commit that referenced this pull request Mar 6, 2025
It materializes separate kernels for the cases where the two input data tensors have the same dtype and the third one has dtype bool.
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
ghstack-comment-id: 2691805026
ghstack-source-id: 38e1996
ghstack-comment-id: 2691808920
Pull Request resolved: pytorch/executorch#8866
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