All pull requests

Pull requests

• hypercube: require one GPU per thread

  #405·0z5a opened Oct 27, 2026·

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• alltoallv: count only data exchanged with other ranks in busbw

  #404·0z5a opened Oct 26, 2026·

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• README: document startup hang with Open MPI + HCOLL multicast

  #401·0z5a opened Oct 15, 2026·

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• alltoall: add lean-synchronization hybrid mode (-D 7) and flush-before-LSA control (-D 6)

  #399·0z5a opened Oct 12, 2026·

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• alltoall: preserve exact per-rank element counts

  #398·0z5a opened Sep 25, 2026·

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• Update MPI include path for DEVICE_API_GIN_EXTRA_INC in src/Makefile

  #397·hiroshi-ya opened Sep 11, 2026Contributor·

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• alltoall: use NCCL_WIN_DEFAULT for window registration

  #382·YeSho-cpp opened May 13, 2026·

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• fix: validate NCCL_TESTS_SPLIT env vars and guard division by zero

  #379·randomizedcoder opened Apr 29, 2026·6 tasks done·

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• fix: input validation for env vars and narrowing conversions

  #378·randomizedcoder opened Apr 29, 2026·4 tasks done·

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• fix: buffer safety and thread safety in util.cu

  #377·randomizedcoder opened Apr 29, 2026·4 tasks·

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• Add Per-GPU-Pair Bandwidth Diagnostics for NCCL_TESTS_SPLIT_MASK

  #376·kzlxd opened Apr 2, 2026·

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• Create azure-webapps-node.yml

  #359·evelyn2908 opened Nov 22, 2025·

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  1

• Support Thor and Spark(?)

  #345·jasl opened Sep 16, 2025·

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  4

• Enhance Multi-Node NCCL Testing with Torch C10D Gloo Framework

  #243·hexinw opened Jul 29, 2024·

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• clarify that the measurement is unidirectional

  #189·stas00 opened Dec 20, 2023·

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  11

• New AlltoAllV (Imbalanced AlltoAll) benchmark.

  #157·babusid opened Jul 27, 2023·

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• Don't call MPI_Comm_split if NCCL_TESTS_SPLIT_MASK is not set

  #151·tstruk opened Jun 30, 2023·

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• src/Makefile: remove unused variables

  #147·yangxingwu opened Jun 6, 2023Contributor·

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• Csv format

  #138·lipovsek-aws opened Apr 12, 2023·

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  18

• Test bench

  #127·novaCoder-zrk opened Jan 27, 2023·

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• Align print format string for column names and units

  #126·dmitrygx opened Jan 11, 2023·

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  5

• Support setting CUDA_VISIBLE_DEVICES env variable

  #113·ryanamazon opened Aug 19, 2022·

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  7

• slow ranks search improvements

  #99·dmonakhov opened Dec 15, 2021·

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• Add bit redop test

  #25·wangxicoding opened Jul 13, 2019·

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  3