dsv4 A5 NPU rebased - #338
Closed
Pingzii wants to merge 7 commits into
Closed
Conversation
a2e/e2a custom ops and native MC2 dispatch/combine both fail on the AFD mixed group on A5 (507035 MTE out-of-range; remote HCCL windows unreachable). Replace the four a2e/e2a call sites on A5 with plain dist.send/recv over the per-ubatch 'afd' HCCL groups. Validated by a 2-rank eager 1A+1F DeepSeek-V2-Lite completion smoke on Ascend 950PR. - camp2p.py: A5 branches in send_attn_output/recv_ffn_output/recv_attn_output/send_ffn_output; init_afd_connector skips the custom-op loader on A5 (a2e/e2a register only ascend910_93). - camp2p_a5.py (new): is_a5(), contiguous rank mapping (attention i -> ffn i//(attn//ffn), matching _num_tokens_for_ffn_rank), per-peer DP token counts, p2p primitives; unit tests added. - Gate stays on FFN (only hidden_states crosses the wire). 910C custom-op path unchanged. - Known gaps: ACL graph capture, DBO, multi-rank validation, 910C regression.
Pingzii
requested review from
hsliuustc0106 and
jiangkuaixue123
as code owners
September 11, 2026 03:02
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
PLEASE FILL IN THE PR DESCRIPTION AND MAKE SURE THE CHECKLIST ITEMS HAVE BEEN CONSIDERED.
Purpose
Issue
Scope
Implementation Notes
Test Plan
Test Result
Docs Impact
Essential PR Checklist