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Figure 5
Scaled speedup predicted by the Gustafson–Barsis law. Gustafson argued that the sequential portion of a problem is not fixed and does not necessarily grow with problem size. For example, if the serial phase is only an initialization phase and the main calculations can run independently in parallel, then by increasing the problem size the sequential fraction can effectively be reduced to obtain a much larger speedup than that predicted by Amdahl's law.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
Volume 65| Part 7| June 2009| Pages 659-671
doi:10.1107/S0907444909011433
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