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Kuaishou AI Infra campus hire (1)

Real Kuaishou AI Infra campus-hire interview questions covering inference optimization and operator optimization

Inference optimization Operator optimization

Theory

  1. What common model-quantization strategies exist, and when does each fit?
  2. How do you tell performance optimization is near its ceiling? Which metrics help?
  3. What are the main engineering hard points of operator fusion?

Project deep dive

  1. How was the memory-access optimization plan in the project designed concretely?
  2. In multi-device or multi-task settings, how do you solve load balancing?