A tool for bandwidth measurements on NVIDIA GPUs.
active 2023-09-11 → 2026-08-07 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 1062 days from 2023-09-11 to 2026-08-07. Pushes: 6 total, peak 2 in a day. Pull requests: 16 total, peak 2 in a day. Issues: 36 total, peak 4 in a day. Comments: 60 total, peak 7 in a day. Stars: 311 total, peak 11 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| esitaridi | 27 | 2 | 4 | 13 |
| deepakcu | 17 | 0 | 0 | 11 |
| ramasubramanianrahul | 11 | 4 | 5 | 1 |
| pzcyyj | 6 | 0 | 0 | 6 |
| AtoshDustosh | 3 | 0 | 0 | 1 |
| chtcvl | 3 | 0 | 0 | 2 |
| yaxinchen666 | 2 | 0 | 0 | 2 |
| CHENfd515 | 2 | 0 | 0 | 2 |
| Artem-B | 2 | 0 | 1 | 1 |
| nmazzilli3 | 2 | 0 | 0 | 1 |
| vitduck | 2 | 0 | 0 | 1 |
| seng1e | 2 | 0 | 0 | 2 |
| kaizilla7 | 2 | 0 | 0 | 1 |
| henryli001 | 2 | 0 | 1 | 1 |
| Fanoid | 2 | 0 | 0 | 1 |
| SongyuanZhao | 1 | 0 | 0 | 0 |
| EvenChang | 1 | 0 | 0 | 1 |
| gongysh2004 | 1 | 0 | 0 | 1 |
| MarkoRamius | 1 | 0 | 0 | 1 |
| shawn9977 | 1 | 0 | 0 | 0 |
Recent activity
Latest issues, pull requests and releases
- Issue#70matthewpopescu2026-08-07 21:31one_to_all and all_to_one memcpy measurement operations are launched before "warmup" iterations are finished
- Issue comment#61esitaridi2026-04-23 22:02cuda 13.2 compat issues
- Pull request#65Artem-B2026-04-13 23:41
- Issue comment#64Artem-B2026-04-09 18:06simpleCopyKernel fails to advance the pointers.
- Releaseesitaridi2026-04-08 18:11v0.9
- Pull request#63Doondi-Ashlesh2026-04-07 17:43
- Issue#61ismaws2026-03-26 02:34cuda 13.2 compat issues
- Issue#60kscweave2026-03-25 03:25Typo in the README
- Issue#57emmett20202026-02-17 02:56Do we really need introduce Boost dependency?
- Issue comment#56esitaridi2026-01-27 05:37nvbandwidth tests failing with cuda 13.1 on aws p4 instance type
- Issue comment#56nmazzilli32026-01-27 03:51nvbandwidth tests failing with cuda 13.1 on aws p4 instance type
- Issue#56nmazzilli32026-01-27 00:02nvbandwidth tests failing with cuda 13.1 on aws p4 instance type
- Issue#55shawn99772026-01-23 02:13NVML_ERROR: [Not Found] in expression nvmlDeviceGetHandleByUUID(s.str().c_str(), &device) in void setOptimalCpuAffinity(int)() : /home/jetson/project/nvbandwidth/inline_common.h:142
- Issue comment#51deepakcu2026-01-21 05:59Skip boost static libs on Azure Linux
- Pull request#54shadychan2026-01-15 09:23
- Issue comment#51deepakcu2026-01-12 07:22Skip boost static libs on Azure Linux
- Issue comment#51henryli0012026-01-09 22:29Skip boost static libs on Azure Linux
- Issue comment#53deepakcu2025-11-25 05:17Asymmetric bandwidth in bidirectional Host-Device transfers: H2D drops to ~11 GB/s while D2H maintains ~25 GB/s
- Issue comment#34jinpuwang2025-11-17 11:40./nvbandwidth -t device_to_device_memcpy_read_ce failed due to unknown issue
- Issue comment#51deepakcu2025-11-15 18:41Skip boost static libs on Azure Linux
- Pull request#52sonic742025-11-15 04:44
- Pull request#51henryli0012025-11-12 00:51
- Pull request#49xxrjun2025-09-26 03:35
- Issue comment#47sammiaobizlink2025-09-23 16:52[CUDA_ERROR_INVALID_CONTEXT] with device_to_host_memcpy_ce on native Ubuntu (works fine in WSL2)
- Issue comment#44pzcyyj2025-09-19 01:59multinode benchmarks fail to start with error - [CUDA_ERROR_INVALID_VALUE] invalid argument in expression cuMemSetAccess
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 311 stars here means stars gained during the window, not the repo's star count.