[caffe2] Reimplement RemoveOpsByType with SSA #40649
Closed
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
Summary: The original implementation of RemoveOpsByType is pretty buggy and does not remove all instances of the ops that should be removed. It's also quite complicated and hard to modify. I reimplemented it by first converting the graph to its SSA form. The algorithm is quite simple once the graph is in SSA form. It's very similar to constant propagation with a few modifications. The hardest part is to deal with the case of removing an op with the output being an output of the predict net, because that output has to be preserved. Reviewed By: yinghai Differential Revision: D22220798 fbshipit-source-id: 9c35312bd096525e9335fb0bc745b921226dec1c
|
This pull request was exported from Phabricator. Differential Revision: D22220798 |
|
This pull request has been merged in 59294fb. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 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Outdated suggestions cannot be applied.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.
Summary: The original implementation of RemoveOpsByType is pretty buggy and does not remove all instances of the ops that should be removed. It's also quite complicated and hard to modify. I reimplemented it by first converting the graph to its SSA form. The algorithm is quite simple once the graph is in SSA form. It's very similar to constant propagation with a few modifications. The hardest part is to deal with the case of removing an op with the output being an output of the predict net, because that output has to be preserved.
Reviewed By: yinghai
Differential Revision: D22220798