Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442

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swolchok merged 8 commits into
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Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
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gh/swolchok/428/head

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@swolchokswolchok commented Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.

Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops

before:

ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:

ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.

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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442

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

⏳ No Failures, 4 Pending

As of commit 5bc4b0c with merge base 6feb623 (image):
💚 Looks good so far! There are no failures yet. 💚

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swolchok added a commit that referenced this pull request Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
This was referenced Apr 24, 2025
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curious how did you find this optimization?

@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit that referenced this pull request Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok

swolchok commented Apr 25, 2025

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curious how did you find this optimization?

@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.

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swolchok commented Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.

@swolchok
Update
8d8e297
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5bc4b0c
[ghstack-poisoned]
This was referenced Apr 25, 2025
Merged
Merged
Merged
Base automatically changed from gh/swolchok/427/head to mainApril 25, 2025 20:46
@swolchok
swolchok merged commit 1bd7260 into mainApr 25, 2025
@swolchok
swolchok deleted the gh/swolchok/428/head branch April 25, 2025 20:47
kedarnath03 pushed a commit to kedarnath03/executorch that referenced this pull request Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Conversation
@swolchok
@swolchokswolchok
commented
Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
0c73438
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@swolchok
Update
fb432fa
[ghstack-poisoned]
@swolchok
Update
d4b7578
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edited

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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
 Merged

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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
commented
Apr 25, 2025

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curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
@swolchok
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Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
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@swolchok
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5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

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Base automatically changed from
gh/swolchok/427/head to
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@swolchok
swolchok
merged commit 1bd7260
into
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deleted the

gh/swolchok/428/head

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April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
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var __re = new RegExp('^' + ".*" + '

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Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
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gh/swolchok/428/head
Apr 25, 2025
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Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
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fb432fa
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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
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Apr 25, 2025

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curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
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5bc4b0c
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This was referenced Apr 25, 2025
 Merged

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@swolchok
swolchok
merged commit 1bd7260
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@swolchok
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deleted the

gh/swolchok/428/head

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April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Conversation
@swolchok
@swolchokswolchok
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Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
0c73438
[ghstack-poisoned]
@swolchok
Update
fb432fa
[ghstack-poisoned]
@swolchok
Update
d4b7578
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@swolchok
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commented
Apr 24, 2025•

edited

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edited

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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
 Merged

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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
commented
Apr 25, 2025

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ContributorAuthor
curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
@swolchok
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Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
[ghstack-poisoned]
@swolchok
Update
5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

 Merged

 Merged


Base automatically changed from
gh/swolchok/427/head to
mainApril 25, 2025 20:46
@swolchok
swolchok
merged commit 1bd7260
into
mainApr 25, 2025
@swolchok
swolchok
deleted the

gh/swolchok/428/head

branch
April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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@JacobSzwejbkaJacobSzwejbkaAwaiting requested review from JacobSzwejbkaJacobSzwejbka is a code owner
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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" + '

Skip to content
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Conversation
@swolchok
@swolchokswolchok
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Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
0c73438
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@swolchok
Update
fb432fa
[ghstack-poisoned]
@swolchok
Update
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Apr 24, 2025•

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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
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Apr 25, 2025

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curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
@swolchok
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Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
[ghstack-poisoned]
@swolchok
Update
5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

 Merged

 Merged


Base automatically changed from
gh/swolchok/427/head to
mainApril 25, 2025 20:46
@swolchok
swolchok
merged commit 1bd7260
into
mainApr 25, 2025
@swolchok
swolchok
deleted the

gh/swolchok/428/head

branch
April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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@digantdesaidigantdesaidigantdesai approved these changes
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, '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
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Conversation
@swolchok
@swolchokswolchok
commented
Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
0c73438
[ghstack-poisoned]
@swolchok
Update
fb432fa
[ghstack-poisoned]
@swolchok
Update
d4b7578
[ghstack-poisoned]
@swolchok
swolchok
commented
Apr 24, 2025•

edited

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Stack from ghstack (oldest at bottom):
@pytorch-bot
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Apr 24, 2025•

edited

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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
 Merged

 Merged

@facebook-github-botfacebook-github-bot
added
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CLA Signed
This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed.
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digantdesai
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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
commented
Apr 25, 2025

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ContributorAuthor
curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
@swolchok
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Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
[ghstack-poisoned]
@swolchok
Update
5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

 Merged

 Merged


Base automatically changed from
gh/swolchok/427/head to
mainApril 25, 2025 20:46
@swolchok
swolchok
merged commit 1bd7260
into
mainApr 25, 2025
@swolchok
swolchok
deleted the

gh/swolchok/428/head

branch
April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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Reviewers

@digantdesaidigantdesaidigantdesai approved these changes
@JacobSzwejbkaJacobSzwejbkaAwaiting requested review from JacobSzwejbkaJacobSzwejbka is a code owner
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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");
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Skip to content
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
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@swolchok
@swolchokswolchok
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Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
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fb432fa
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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
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Apr 25, 2025

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curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
[ghstack-poisoned]
@swolchok
Update
5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

 Merged

 Merged


Base automatically changed from
gh/swolchok/427/head to
mainApril 25, 2025 20:46
@swolchok
swolchok
merged commit 1bd7260
into
mainApr 25, 2025
@swolchok
swolchok
deleted the

gh/swolchok/428/head

branch
April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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@digantdesaidigantdesaidigantdesai approved these changes
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h - #10442
Merged
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Apr 25, 2025
Merged
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_parallel.h#10442
swolchok merged 8 commits into
mainfrom 
gh/swolchok/428/head
Conversation
@swolchok
@swolchokswolchok
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Apr 24, 2025

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This saves a ton of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000

after:
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000

__TEXT size improvement is 835584 bytes, or 15%.
@swolchok
Update
0c73438
[ghstack-poisoned]
@swolchok
Update
fb432fa
[ghstack-poisoned]
@swolchok
Update
d4b7578
[ghstack-poisoned]
@swolchok
swolchok
commented
Apr 24, 2025•

edited

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Stack from ghstack (oldest at bottom):
@pytorch-bot
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edited

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🔗 Helpful Links
🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10442
Note: Links to docs will display an error until the docs builds have been completed.
⏳ No Failures, 4 Pending
As of commit 5bc4b0c with merge base 6feb623 (image):

💚 Looks good so far! There are no failures yet. 💚
This comment was automatically generated by Dr. CI and updates every 15 minutes.
swolchok added a commit
that referenced
this pull request
Apr 24, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
084d454
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 2482ad7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442

This was referenced Apr 24, 2025
 Merged

 Merged

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curious how did you find this optimization?
@swolchok
Update
773b183
[ghstack-poisoned]
@swolchok
Update
e83385f
[ghstack-poisoned]
@swolchok
Update
9aa95d0
[ghstack-poisoned]
swolchok added a commit
that referenced
this pull request
Apr 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5b18ec4
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 516b5a7
ghstack-comment-id: 2828755250
Pull-Request-resolved: #10442
@swolchok
swolchok
commented
Apr 25, 2025

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ContributorAuthor
curious how did you find this optimization?
@digantdesai I was working on reapplying #9842 and #9841 (reverted due to size regression) and iteratively using bloaty on the result of bash test/build_optimized_size_test.sh. There was a clear huge size increase from std::function, and after struggling with how to avoid it, I found my way to function_ref.
@swolchok
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Apr 25, 2025

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Unit tests look good despite two apparent flakes. will merge after rebase.
@swolchok
Update
8d8e297
[ghstack-poisoned]
@swolchok
Update
5bc4b0c
[ghstack-poisoned]

This was referenced Apr 25, 2025
 Merged

 Merged

 Merged


Base automatically changed from
gh/swolchok/427/head to
mainApril 25, 2025 20:46
@swolchok
swolchok
merged commit 1bd7260
into
mainApr 25, 2025
@swolchok
swolchok
deleted the

gh/swolchok/428/head

branch
April 25, 2025 20:47
kedarnath03 pushed a commit
to kedarnath03/executorch
that referenced
this pull request
Jun 25, 2025
@swolchok
Adopt runtime::FunctionRef in thread_parallel_interface.h and thread_…
5653aed
…parallel.h
This saves a *ton* of size by no longer requiring callers to create std::function.
Test Plan: bash test/build_optimized_size_test.sh && size test/size_test_all_optimized_ops
before:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:11 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:11 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 11182136 Apr 24 13:11 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
5341184	98304	0	4300800000	4306239488	100ac0000
```
after:
```
ExecuTorch with no ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 153928 Apr 24 13:07 cmake-out/test/size_test
ExecuTorch with portable ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 2150960 Apr 24 13:07 cmake-out/test/size_test_all_ops
ExecuTorch with optimized ops binary size, unstripped:
-rwxr-xr-x 1 swolchok staff 5927336 Apr 24 13:07 cmake-out/test/size_test_all_optimized_ops
__TEXT	__DATA	__OBJC	others	dec	hex
4505600	98304	0	4296376320	4300980224	1005bc000
````
`__TEXT` size improvement is 835584 bytes, or 15%.
ghstack-source-id: 19ca499
ghstack-comment-id: 2828755250
Pull-Request-resolved: pytorch/executorch#10442
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