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T5 Others iFlytek New grad Round 1

iFLYTEK AI Infra campus hiring first round

Real iFLYTEK AI Infra campus hiring first-round interview questions covering AI Infra and related topics

Architecture basics

  1. How do BF16 and FP16 differ in numeric representation? Why is BF16 usually chosen for large-model training?
  2. What are big-endian and little-endian? Which byte order do mainstream processor architectures use today?
  3. What aspects do you consider when designing a CPU? What roles do instruction-set design and each pipeline stage play?
  4. What is the difference between user mode and kernel mode? How do you switch between them?

Operators and frameworks

  1. What are the main difficulties in NPU development, and how do you handle them?
  2. How do you address load imbalance in Softmax?
  3. What does Tensor Parallel shard, and which communication ops are involved?

Project experience

  1. Deep dive into project experience.