| CARVIEW |
Select Language
HTTP/2 200
date: Wed, 23 Jul 2025 18:47:40 GMT
content-type: text/html; charset=utf-8
cache-control: no-cache
content-security-policy: default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net/ productionresultssa1.blob.core.windows.net/ productionresultssa2.blob.core.windows.net/ productionresultssa3.blob.core.windows.net/ productionresultssa4.blob.core.windows.net/ productionresultssa5.blob.core.windows.net/ productionresultssa6.blob.core.windows.net/ productionresultssa7.blob.core.windows.net/ productionresultssa8.blob.core.windows.net/ productionresultssa9.blob.core.windows.net/ productionresultssa10.blob.core.windows.net/ productionresultssa11.blob.core.windows.net/ productionresultssa12.blob.core.windows.net/ productionresultssa13.blob.core.windows.net/ productionresultssa14.blob.core.windows.net/ productionresultssa15.blob.core.windows.net/ productionresultssa16.blob.core.windows.net/ productionresultssa17.blob.core.windows.net/ productionresultssa18.blob.core.windows.net/ productionresultssa19.blob.core.windows.net/ github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
referrer-policy: no-referrer-when-downgrade
server-timing: pull_request_layout-fragment;desc="pull_request_layout fragment";dur=420.285764,conversation_content-fragment;desc="conversation_content fragment";dur=686.353433,conversation_sidebar-fragment;desc="conversation_sidebar fragment";dur=406.626573,nginx;desc="NGINX";dur=1.354712,glb;desc="GLB";dur=103.138692
strict-transport-security: max-age=31536000; includeSubdomains; preload
vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With
x-content-type-options: nosniff
x-frame-options: deny
x-voltron-version: fd8fbbc
x-xss-protection: 0
server: github.com
content-encoding: gzip
accept-ranges: bytes
set-cookie: _gh_sess=xTJ0NL7G2AhMeMkPOaIHzFynX2ZiJluD5DmDtyRUkbZ4GY8GXTkQYc2ER2VCgQ63F%2F9ElIA7ksD1fHQsl7R7YokR0vXELRiSXdroBb6zzrvQT3aGSmEXGCUgQy%2F%2Be6GjX48m3T9Kv1z9JHjOASNuMjHtUTyv%2BjFx9l3kYrYvwmHro1MC3UPaZB2fqsrCR3Hp1oyiCbM%2BzhZboQQEAS5fCusu2%2FRcEwwzjzzFO7IRe%2F%2F7Nb9%2Bcsnef7r2Y051iBIK%2BCwFQvH9H1mqMWcNU5lg%2Fg%3D%3D--%2BS26Tdxrmu42WR3C--io%2BYnIUvyNsZsGiFPoTKkA%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
set-cookie: _octo=GH1.1.1707536616.1753296460; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 18:47:40 GMT; Secure; SameSite=Lax
set-cookie: logged_in=no; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 18:47:40 GMT; HttpOnly; Secure; SameSite=Lax
x-github-request-id: AC50:256CA9:FECB6F:12DB11B:68812E4C
[CINN] Use approx tanh for fp16/bf16 by lshpku · Pull Request #72871 · PaddlePaddle/Paddle · GitHub
Skip to content
Navigation Menu
{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 5.8k
[CINN] Use approx tanh for fp16/bf16 #72871
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Merged
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
你的PR提交成功，感谢你对开源项目的贡献! |
zyfncg
approved these changes
May 22, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Labels
None yet
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
You can’t perform that action at this time.
PR Category
CINN
PR Types
Performance
Description
在fp16/bf16场景使用
tanh.approx.f32汇编替换原有的tanh()函数，可节省30%计算带宽原理：原有的tanh在SASS层面是拆成几条EXP+RCP实现的，新的tanh.approx则就是一条TANH
精度对比：遍历所有float16和bfloat16取值，无任何精度差别，因为中间过程是用float32算的，cast回去就把精度误差都消除了；float32下则最高有2e-6的误差，所以fp32的场景仍然用原来的tanh
另外，CUDA还有
tanh.approx.f16/bf16的版本，省了cast的成本，但是我测了下误差高达5e-4，还是用fp32的版本好了Pcard-85711