Remove host-side branch on F.accuracy
with ignore_label
#8364
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Outdated suggestions cannot be applied.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.
Current F.accuracy with
ignore_label
implementation requires host-side branchif total == 0
.This causes unnecessary sync between forward and backward computation.
By this PR, we can avoid this synchronization so it can accelerate CPU-intensive model training (i.e. Mixed-precision training)
I've tried the Advanced Indexing feature, but it cannot help.