TachusPI

TachusPI Download

Here is the program used to compute the 2700 billion digits of Pi. I only maintain the Linux version. I just compiled a Windows executable but I never really used it: you are warned. You must have a 64 bit OS to use this program.

Linux executable tpi-0.9-linux.tar.gz
Windows executable tpi-0.9.3-win.zip

Documentation

Speed for Tiny Computations

The displayed time includes the base 10 conversion but not the time needed to write the result to disk.

TPI
version CPU CPU
frequency RAM RAM
frequency OS
0.9 Intel Core i7 2.93 GHz 6 GiB 1066 MHz Linux 2.6.29

TPI version	CPU	CPU frequency	RAM	RAM frequency	OS
0.9	Intel Core i7	2.93 GHz	6 GiB	1066 MHz	Linux 2.6.29

Number of
digits Number of
threads Time
(seconds)
10,000,000 1 8.28
100,000,000 1 122
1000,000,000 1 1814
10,000,000 4 3.31
100,000,000 4 45.3
1000,000,000 4 701

Number of digits	Number of threads	Time (seconds)
10,000,000	1	8.28
100,000,000	1	122
1000,000,000	1	1814
10,000,000	4	3.31
100,000,000	4	45.3
1000,000,000	4	701

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Linux executable	tpi-0.9-linux.tar.gz
Windows executable	tpi-0.9.3-win.zip