What is Gustafson's law?

The observation that when processors are added and the problem is enlarged, the parallel fraction grows, giving gains nearly proportional to processor count.

Field: Performance Analysis

Gustafson's law in the explanations

Questions that mention Gustafson's law (2)

  1. What idea does Gustafson's law express?
  2. If 90% of a program can be parallelized, what is the theoretical maximum speedup when it runs on an unlimited number of processors?

Related terms

Amdahl's law Speedup Benchmark CPU time Cycles per instruction (CPI) Flame graph Geometric mean Harmonic mean Little's law Microbenchmark

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