NVIDIA / NVIDIA/nvshmem

[Question]: Data consistency across multiple devices in P2P scenarios

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question
Dominant language
C++
Stars
586
Forks
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PR merge metrics
No merged PRs in 30d

Description

Question

I noticed that L1 bypass configurations (__ldcg) are not used in the code (e.g., nvshmemi_memcpy_threadgroup()). How does nvshmem ensure data consistency across multiple devices in P2P scenarios?

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the implementation around nvshmemi_memcpy_threadgroup() and the handling of __ldcg mentioned in the question. Trace the documented mechanism for data consistency across devices in P2P scenarios, then provide an evidence-based explanation or documentation update that resolves the question.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
distributed-systems, documentation
Issue type
Documentation
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
18/100

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