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← Memory Hierarchy Solution - Intro to Computer Science

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Showing Revision 6 created 05/24/2016 by Udacity Robot.

  1. [Evans] We can compute these using the Python interpreter.
  2. You didn't need to submit your code for this. You needed to compute the answers.
  3. And the answers that you should have gotten is that a light bulb,
  4. the latency distance is approximately 300,000 kilometers;
  5. for a CPU register, where the latency is less than 0.4 nanoseconds,
  6. the equivalent latency distance is 0.12 meters, about 120 centimeters;
  7. for the DRAM, DRAM is much cheaper.
  8. The latency is much higher than a CPU register.
  9. That corresponds to 3.6 meters of latency distance.