pre copy pinned data to gpu #8386
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
|
Thanks for your contribution! |
…nto refine_bert_dataloader
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Outdated suggestions cannot be applied.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
Performance optimization
PR changes
Models
Description
Bert训练过程中存在大量H2D拷贝，打断了CPU对Kernel的预加载，主要问题是，Bert的Dataloader提供的7个Tensor都是Pinned的。这7个Tensor散落在训练过程中使用，每次使用均需要一次Blocking的H2D拷贝，造成多次CPU打断。修改方法是：训练前统一调用Tensor.cuda(blocking=False)。
修改前：
修改后：
估计其它模型也存在类似问题，均应考虑本优化。