Software for calculating π: Difference between revisions

Revision as of 12:55, 16 April 2007

Revision as of 03:55, 16 May 2007

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* '''PiFast''', by Xavier Gourdon was the fastest program for [[Microsoft Windows]] in 2003. According to its author, it can compute one million digits in 3.5 seconds on a 2.4 GHz [[Pentium 4]].<ref>http://numbers.computation.free.fr/Constants/PiProgram/timings.html</ref> PiFast can also compute other irrational numbers like ''[[e (mathematical constant)|e]]'' and [[square root of two|√2]]. It can also work at lesser efficiency with very little memory (down to a few tens of megabytes to compute well over a billion (10⁹) digits). This [[closed source]] [[freeware]] tool is a popular benchmark in the [[overclock]]ing community. PiFast 4.4 is available from Stu's Pi Page. PiFast 4.3 is available from Gourdon's page.

* The Windows program '''QuickPi''' v4.00a5 Alpha 12 by Steve Pagliarulo for Windows is faster than PiFast for small runs of under 400,000,000 digits. Version 4.5 is not publically available, but v4.00a is available on Stu's Pi Page below. QuickPi is less efficient thanLike PiFast 4.4 for runs of approximately 160,000,000 digits or more. QuickPi can also compute other irrational numbers like ''e'' √2 and √2√3. The software may be obtained from the author through the Pi-Hacks Yahoo! forum, or from Stu's Pi Page.

==Most digits calculated on a home computer==