(Named after Gene Amdahl) If F is the fraction of a calculation that issequential, and (1-F) is the fraction that can be parallelised, then the maximum speedup that can be achieved by using P processors is 1/(F+(1-F)/P). [Gene Amdahl, "Validity of the single Processor Approach to Achieving Large-scale Computing Capabilities", AFIPs Conference Proceedings, (30), pp. 483-485, 1967]. (2002-10-16)