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CUDA Academy · Lesson

Occupancy Is Not the Whole Story

When latency hiding beats raw occupancy.

A Common Trap

It is tempting to chase 100% occupancy, but maximum occupancy does not guarantee maximum performance.

Latency Hiding Is the Goal

Occupancy matters only because it helps hide latency. Once latency is hidden, extra warps add nothing useful.

All lessons in this course

  1. What Occupancy Really Means
  2. Registers and Shared Memory Limits
  3. The Occupancy Calculator API
  4. Occupancy Is Not the Whole Story
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