Explain what torch.distributed.barrier does
Overview
This question evaluates understanding of PyTorch distributed synchronization primitives, process coordination, and concurrency control in distributed training workflows.
OpenAI
Dec 15, 2025, 12:00 AM
Machine Learning Engineer
Onsite
Software Engineering Fundamentals
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Question
In PyTorch distributed training, what does torch.distributed.barrier() do?
Follow-ups
- Give an example of when you would use it.
- What are the risks of calling it incorrectly?
- How does it relate to deadlocks and performance?
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