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[RFE]: Add GPU Hardware Identifier to the NCCL Profiler Plugin API

enhancement

Status: Open.

#2297 In NVIDIA/nccl;

· archiepowell-linaro opened on Jul 17, 2026

[RFE]: Discuss per-peer P2P buffer merge to reduce NCCL communicator init time

enhancement

Status: Open.

#2294 In NVIDIA/nccl;

· xiaoguoer opened on Jul 16, 2026

[Question]: Inconsistent busMultiplier for MC kernels: why 0.55*nRanks only for AllGather and ReduceScatter?

question

Status: Open.

#2293 In NVIDIA/nccl;

· shenyt-sanshui opened on Jul 16, 2026

[Issue]: nccl4py whls don't pin to a specific nccl version

Status: Open.

#2289 In NVIDIA/nccl;

· d4l3k opened on Jul 15, 2026

[Question]: Should the automatic Blackwell AllGather CE path reject sysmem-backed symmetric windows?

question

Status: Open.

#2288 In NVIDIA/nccl;

· lukeshi-code opened on Jul 14, 2026

[Question]: What are the hardware and software version requirements for running GPI (including DOCA and DPA)？

question

Status: Open.

#2287 In NVIDIA/nccl;

· shenhongqian opened on Jul 14, 2026

[Issue]: NET/IB out-of-bounds write / crash when a node exposes more than MAX_IB_DEVS active IB ports

Status: Open.

#2282 In NVIDIA/nccl;

· Peng-Xu opened on Jul 13, 2026

[Issue]: Missing RHEL9 x86_64 libnccl 2.30.x RPMs for CUDA 13.0

Status: Open.

#2281 In NVIDIA/nccl;

· raravind007 opened on Jul 9, 2026

[Question]: Clarify NCCL_SYM_CTAS

question

Status: Open.

#2280 In NVIDIA/nccl;

· baiwei0427 opened on Jul 9, 2026

[RFE]: Broadcast does not emit ncclProfileColl profiler events when NCCL_ALLGATHERV_ENABLE=1

enhancement

Status: Open.

#2278 In NVIDIA/nccl;

· mmhzheng opened on Jul 9, 2026

[Issue]: Tuning model appears to conservatively penalize Ring/Simple NET latency for flush on Hopper/Blackwell paths where runtime needFlush is none

Status: Open.

#2274 In NVIDIA/nccl;

· cxz66666 opened on Jul 8, 2026

NCCL Roadmap: Aug - Oct 2026

roadmap

Status: Open.

#2272 In NVIDIA/nccl;

· gab9talavera opened on Jul 6, 2026