Prefix sum (scan) implementation (C2V sync).#101
Merged
Conversation
Collaborator
|
Tests pass on 910B4. |
zouzias
approved these changes
Apr 16, 2026
zouzias
left a comment
zouzias
left a comment
Collaborator
There was a problem hiding this comment.
@vloncar , please add a README.md file like below and merge. Nice MR!
# Single core prefix sum (scan)
An implementation of prefix sum (scan) algorithm, based on https://arxiv.org/abs/2505.15112v1. Currently, only single core algorithm is implemented (ScanU from the paper).
Usage:
```bash
# Optional
export PTO_LIB_PATH=${ASCEND_TOOLKIT_HOME} # reuse CANN 8.5.0 headers
# Run scan tests
python ./run_scan.py
zouzias
reviewed
Apr 16, 2026
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
An implementation of prefix sum (scan) algorithm, based on https://arxiv.org/abs/2505.15112v1. Currently, only single core algorithm is implemented (
ScanUfrom the paper).The implementation requires
CUBE <-> AIVsynchronization, for which I made a custom sync implementation inspired by the one in #65. I had to make changes to sync on PIPE_FIX and MTE3, as theTSync_Custom.hppimplementation suggests. Perhaps the issue observed in #65 has since been resolved.