PiFast
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PiFast, by Xavier Gourdon, is presently the fastest program for Microsoft Windows to compute digits of the mathematical constant π. On an Athlon XP 2000+ underclocked to 1620 MHz, it computes one million digits in 4.75 seconds. It can also compute other irrational numbers like e and √2. PiFast can 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 overclocking community, and has been used to compute over 20 billion (2×1010) digits of π (the present record on a desktop computer).
External links
- PiFast homepage (http://numbers.computation.free.fr/Constants/PiProgram/pifast.html)