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Memory Wall

  • Computer Systems
  • Processor speed increased by 55% every year.
    • log(2)log(1.55)\log(2) \over \log(1.55) gives 1.581.58, aligning with the Moore's Law.
  • Memory speed increased by 7% every year.
  • Latency gets higher and higher between the processor and memory
  • Solution with Latency and Throughput
    • Improve Latency
      • Improve the speed of memory itself (hard!)
      • Put memory closer to the processor or within the processor.
    • Improve Throughput