NVIDIA/nccl
- Total stars
- 5,178
- Today · UTC
- +0since 10:42 UTC
Save to My finds to follow releases and star growth. Saved in this browser.
About the project
NCCL is a standalone C++ library of collective communication primitives (all-reduce, all-gather, broadcast, reduce-scatter, send/receive) optimized for high-bandwidth inter-GPU communication over PCIe, NVLink, NVSwitch, InfiniBand and TCP/IP.
Useful for
- Run all-reduce across multiple GPUs in a single node or cluster for distributed training
- Build NCCL as a deb, rpm, txz package or Python wheel for deployment
- Benchmark collective bandwidth with nccl-tests on your GPU topology
README summarized by DeepSeek V4.1 Flash. Details may be inaccurate. Read the original README →
Star growth looks organic. Data as of October 22, 2026, 11:38 UTC.
The star-growth assessment does not verify whether the project is safe to run.
Stars per day
Bars show stars per UTC day; the line is a moving average of available history. Gaps mean missing data, not zero growth. Today's bar is incomplete. Red marks spike days.
Why it’s trending
- Star-counter measurements on 2026-10-22 (UTC), 10:42–11:36: 5178 → 5178 stars (+0). This is the change over that interval.
- GitHub Trending C++ today: #8.
- Recent forks include notable developers: @jeffhammond (840 followers).
Measured growth: the last 7 completed days
New stars over 7 days: 15. -35% versus the preceding 7 days.
Daily measurements · UTC
- October 15, 2026
- 3
- October 16, 2026
- 2
- October 17, 2026
- 3
- October 18, 2026
- 2
- October 19, 2026
- 0
- October 20, 2026
- 5
- October 21, 2026
- 0
Largest measured day in the last 30 days: 6 · October 12, 2026. Days with data: 30.
Completed days come from GitHub star history; today and forecasts are excluded from this comparison. History checked: October 22, 2026, 11:37 UTC. Sources and measurement limits →
Three GitHub discoveries in each edition
What they do, why they are gaining interest, and what to check before using them.
Editions at 10:00, 16:00, 22:00 MSK.
Numbers
- Total stars
- 5,178
- Today
- +0 stars measured 2026-10-22, 10:42–11:36 UTC, ≈ 0 by evening
- Forks
- 1,450
- Issues and pull requests
- 2,470
- Watchers
- 164
- Language
- C++
- Latest release
- v2.32.3-1 · September 17, 2026
- Created
- November 14, 2015
- Last push
- October 21, 2026
Star trust
Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.
These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.
Spotted in
- October 22, 2026GitHub Trending C++ today: #8
README badge
Paste it into your README — the badge shows the current magnitude and links to this page.
[](https://gitnova.dev/en/r/NVIDIA/nccl)