nvidia / nccl
Code health
This codebase scores 5.6 out of 10 for code health, which we rate fair. It also scores maintainability 7.6 and static performance 9.9 out of 10. The three are scored separately and never blended into one number. Risk is concentrated, as it usually is: 106 of 834 files are git hotspots, and they average 2.9 — which is where the fixes pay off most.
Do next
1 thing worth doing this quarter.
Worth planning
Delete 1,086 unused symbols and files (16,327 lines)
Nothing in the graph reaches them, across 111 files; every reader and agent pays to skip them.
- symbols
- 1086
- lines
- 16,327
- safe to delete
- Yes(inferred)
Medium effort
Improve what Repowise can see
Add a test coverage report
Without one, Repowise cannot tell tested code from untested code, so every test-related action says “unknown”.
- line coverage
- Unknown, no report
Small effortReview the 67 proposed decisions
None is accepted yet, so nothing can drift from one and agents get no enforced guidance from them.
- proposed
- 67
- accepted
- 0
Medium effort
- Lines of code
- 172.6K
Recent activity
All commitsCommits
Decisions
- Use size-based ABI versioning for cross-boundary structsproposed · 2mo ago
- Forward declare nvmlDevice_t on Windows to avoid including nvml.hproposed · 2mo ago
- Define PATH_MAX on Windowsproposed · 2mo ago
- Refactor RMA proxy descriptor APIproposed · 2mo ago
- Remove SHM CE proxy code and thread contextproposed · 2mo ago
- Add resource sharing thread and mode support to GDAKI APIsproposed · 2mo ago
Everything we found
4,094 open
Every detector's open count by area, each with its worst example. An inventory, not a to-do list: the actions above are the part worth doing.
- worst item is critical severity. Code health2,299Untested hotspot · src/transport.cc21 findings · 9.5 deducted
- worst item is medium severity. Refactoring108__init__+1.2 health, S effort · contrib/nccl_ubx/ubx/_nccl_backend.py
- worst item is medium severity. Decisions173contrib/nccl_ep/nccl_ep.cc67 awaiting review · 106 hotspots ungoverned
- worst item is medium severity. Ownership391bindings/nccl4py/nccl/ep/__init__.py96% single-owner concentration, 14 commits in 90d
- worst item is low severity. Dead code1,123GroupUnreachable class (89 lines)
Composition
Open the graphExplore this codebase
- Docs0 pages across 8 modules
- ChatAsk this codebase a question and get an answer with its sources.
- Files834 files with per-file docs, health and history
- ArchitectureDependency graph, layers, and 13 entry points
- Code healthPer-file scores, 2,387 open findings, coverage and refactoring targets
- Knowledge graphEntities, communities, and the paths between them
- Change couplingFiles that keep changing together, mined from commit history
- CommitsChange-risk ranked history with agent provenance
- ContributorsBus factor, per-file maintainers, and the human/agent split
- StatsSize class, origin, lifetime churn, rhythm and records
- CostsWhat indexing this snapshot cost, by model and by run.