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[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

[Question]: Is there any plan to support Symmetric Memory on PCIe-only systems (e.g., 8x RTX 5090)?

question

Status: Open.

#2275 In NVIDIA/nccl;

· shenyt-sanshui opened on Jul 8, 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

[Question]: Does NCCL GIN (GDAKI backend) support ConnectX-6 NICs?

question

Status: Open.

#2255 In NVIDIA/nccl;

· Ben286 opened on Jun 26, 2026

[Question]: How does the CuTeDSL device API legally dereference the host-side ncclDevComm on the device?

question

Status: Open.

#2246 In NVIDIA/nccl;

· UESTC-zjh opened on Jun 24, 2026

[Question]: ProxyOp and ProxyStep in NCCL Inspector

question

Status: Open.

#2239 In NVIDIA/nccl;

· ahmd-k opened on Jun 17, 2026

[Issue]: Performance and functional issues when using ncclPutSignal/ncclWaitSignal in Pipeline Parallelism

Status: Open.

#2238 In NVIDIA/nccl;

· DAMI211 opened on Jun 16, 2026

[Issue]: Add IB GRH support (IBV_QPF_GRH_REQUIRED) for GIN / GDAKI

Status: Open.

#2237 In NVIDIA/nccl;

· avnf opened on Jun 15, 2026

[RFE]: Include qp_num in detailed RoCE completion error log

enhancement

Status: Open.

#2219 In NVIDIA/nccl;

· zrss opened on Jun 7, 2026