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[Question]: Will NCCL ext-profiler supports to enable both profiler and inspector meanwhile?

question

Status: Open.

#1981 In NVIDIA/nccl;

· CavalryXD opened on Jan 16, 2026

[Issue]: Fails re-loading net-pluging after comm destroy

Status: Open.

#1978 In NVIDIA/nccl;

· theely opened on Jan 14, 2026

[Question]: what's the diff between ext-profiler/example and ext-profiler/inspector ? why add the perf exporter base example ?

question

Status: Open.

#1977 In NVIDIA/nccl;

· watson-2018 opened on Jan 14, 2026

<code>cudaStreamPerThread</code> + <code>ncclCommInitRankConfig(blocking=0)</code> causes NCCL kernels to run on a different CUDA stream than the caller thread

Status: Open.

#1976 In NVIDIA/nccl;

· ClubieDong opened on Jan 11, 2026

[Question]: If the number of tokens is fixed, is the NCCL allreduce operation always deterministic?

question

Status: Open.

#1975 In NVIDIA/nccl;

· rajagond opened on Jan 9, 2026

[Issue]: Compilation failure with CUDA 11.8

Status: Open.

#1972 In NVIDIA/nccl;

· chhwang opened on Jan 6, 2026

[Question]: NCCL memory registration

question

Status: Open.

#1970 In NVIDIA/nccl;

· alokprasad opened on Jan 3, 2026

[Issue]: [nccl4py] Random hang in point-to-point communication with ring topology (16 ranks)

Status: Open.

#1967 In NVIDIA/nccl;

· wujiahao15 opened on Dec 30, 2025

[Question]: Example Usage and Integration Questions about NCCL DSL

question

Status: Open.

#1965 In NVIDIA/nccl;

· wangfakang opened on Dec 26, 2025

[Question]: When will the AllGather PAT algorithm with full topology support be further updated?

question

Status: Open.

#1964 In NVIDIA/nccl;

· predawn-love opened on Dec 25, 2025

[Question]: Is cuMemAlloc without memset safe?

question

Status: Open.

#1962 In NVIDIA/nccl;

· visualxu opened on Dec 24, 2025

[Issue]: Start timestamp is 0.0 for certain reported events when using NCCL example profiler

Status: Open.

#1961 In NVIDIA/nccl;

· LeviMee opened on Dec 24, 2025