microsoft/msccl

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Microsoft Collective Communication Library

Stars: 399
Forks: 36
Open beginner issues: 0
Indexed issues: 10
Avg merge: 1d 1h
Merged PRs (30d): 1

Dominant language: C++
License: No license data
Last GitHub push: Aug 25, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

10 open issues indexed

Heterogeneous communciation between Nvidia and AMD cards Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

microsoft/msccl#66 · Opened Aug 4, 2025
Specify the number of instances in alltoall_a100_two_step.py Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/msccl#65 · Opened Jul 3, 2025
Undefined symbol: ncclCommRegister Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/msccl#64 · 2 comments · Opened Oct 21, 2024
make failed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/msccl#63 · Opened Jun 12, 2024
How to run nccltest with msccl on 8 gpus（2 server * 4 P40 gpus）？ Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/msccl#62 · Opened Jun 11, 2024
A Doubt about the Source Code of MSCCL Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

microsoft/msccl#61 · 1 comment · Opened Mar 30, 2024
Compilation failure Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

microsoft/msccl#55 · 3 comments · Opened Aug 16, 2023
Grammar error in README.md Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

microsoft/msccl#53 · Opened Jun 27, 2023
MSCCL all-to-all performance did not improve compared with NCCL Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

microsoft/msccl#48 · 54 comments · Opened Nov 17, 2022
Multi-gpu NCCL test test_all_reduce_coalesced_nccl failing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/msccl#35 · 3 comments · Opened Jul 18, 2022

microsoft/msccl

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