GPU Node Failure Detection (Group Testing)

CodingxAILast reported December 2025Low Frequency
Reported
1× across candidate reports
First seen
December 2025
Last reported
December 2025
Reported outcome
unknown

Problem Overview

Given N GPU nodes, you have access to a test(S) function where S is a set of nodes: test(S) returns True if every node in S is healthy, and False if at least one node in S is faulty. Design an efficient algorithm to identify ALL bad nodes. Constraints: (1)…

  • 4 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
  • The rest of the problem statement — full requirements, constraints, and edge cases
  • Approach and trade-offs — what passing candidates did, and the mistakes that sink people
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Verified Source
Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.
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Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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