[XPU] add bfloat16 support for CastKernel #58456
Merged
Conversation
This file contains 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! |
QingshuChen
approved these changes
Oct 30, 2023
zeroRains
pushed a commit
to zeroRains/Paddle
that referenced
this pull request
Nov 8, 2023
* [XPU] add bfloat16 support for CastKernel * fix unittest.
danleifeng
pushed a commit
to danleifeng/Paddle
that referenced
this pull request
Nov 14, 2023
* [XPU] add bfloat16 support for CastKernel * fix unittest.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
PR types
New features
PR changes
OPs
Description
给XPU下面的
CastKernel增加对bfloat16的支持。由于XDNN里面bfloat16只能和float进行互转，所以先走兜底实现，即遇到需要bfloat和非float类型转换的时候，中间垫一层和float的转换。
会有精度问题吗：例如从double转bfloat16，按照现有的实现先转float再转bfloat16，反正都是“砍bit”。反过来也一样，例如从bfloat16转double，那么先转float再转double，反正都是“补bit”。