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T4 Automotive and self-driving XPeng

XPeng AI Infra

Real XPeng AI Infra interview questions covering operator optimization

Operator optimization

Fundamentals

  1. Underlying implementation of std::map vs std::unordered_map, and time-complexity comparison.
  2. What common optimization techniques are used at inference time?

Project experience

  1. Deep project discussion covering arithmetic-intensity analysis and matrix-multiplication performance bottlenecks.

Coding

  1. Use CUDA to implement 2D matrix transpose, then optimize performance step by step.