pari-gp Calculator / Alpine Linux / rPi-2 : π to a million digits
GP/PARI CALCULATOR Version 2.17.2 , compiled: Mar 6 2025
Code:
#\p 1000000 \\ Set precision to 1 million digitsmyPi = Pi; \\ Compute πwrite("pi_output.txt", myPi); \\ Save π to a text file##Code:
~ $ fastfetch .hddddddddddddddddddddddh. ubu@localhost :dddddddddddddddddddddddddd: ------------- /dddddddddddddddddddddddddddd/ OS: Alpine Linux edge armv7l +dddddddddddddddddddddddddddddd+ Host: Raspberry Pi 2 Model B Rev 1.1 `sdddddddddddddddddddddddddddddddds` Kernel: Linux 6.12.17-0-rpi `ydddddddddddd++hdddddddddddddddddddy` Uptime: 3 mins.hddddddddddd+` `+ddddh:-sdddddddddddh. Packages: 927 (apk)hdddddddddd+` `+y: .sddddddddddh Shell: shddddddddh+` `//` `.` -sddddddddd Terminal: /dev/pts/0ddddddh+` `/hddh/` `:s- -sddddddd CPU: BCM2836 (4) @ 0.90 GHzddddh+` `/+/dddddh/` `+s- -sddddd GPU: Broadcom bcm2835-vc4 [Integrated]ddd+` `/o` :dddddddh/` `oy- .yddd Memory: 98.72 MiB / 921.12 MiB (11%)hdddyo+ohddyosdddddddddho+oydddy++ohdddh Swap: Disabled.hddddddddddddddddddddddddddddddddddddh. Disk (/): 5.29 GiB / 14.21 GiB (37%) - ext4 `yddddddddddddddddddddddddddddddddddy` Local IP (eth0): 192.168.1.104/24 `sdddddddddddddddddddddddddddddddds` Locale: C.UTF-8 +dddddddddddddddddddddddddddddd+ /dddddddddddddddddddddddddddd/ :dddddddddddddddddddddddddd: .hddddddddddddddddddddddh.~ $ gp <pi1m.gpReading GPRC: /home/ubu/.gprcGPRC Done. GP/PARI CALCULATOR Version 2.17.2 (released) armv8l running linux (arm/GMP-6.3.0 kernel) 32-bit version compiled: Mar 6 2025, gcc version 14.2.0 (Alpine 14.2.0) threading engine: pthread, nbthreads = 4 (readline v8.2 disabled, extended help enabled) Copyright (C) 2000-2024 The PARI GroupPARI/GP is free software, covered by the GNU General Public License, and comesWITHOUT ANY WARRANTY WHATSOEVER.Type ? for help, \q to quit.Type ?18 for how to get moral (and possibly technical) support.parisize = 300000000, primelimit = 1048576, factorlimit = 1048576 timer = 1 (on) realprecision = 1000007 significant digits (1000000 digits displayed)cpu time = 8,508 ms, real time = 8,843 ms.cpu time = 2,136 ms, real time = 2,227 ms. *** last result: cpu time 2,136 ms, real time 2,227 ms.Goodbye!~ $From the Raspberry Pi 2 running Alpine Linux with PARI/GP 2.17.2, the computation and file output times can be inferred from the provided execution logs:
Compute Time (Calculating π to 1 million digits):
CPU time: 8,508 ms (8.508 seconds)
Real time: 8,843 ms (8.843 seconds)
File Output Time (Writing π to pi_output.txt):
CPU time: 2,136 ms (2.136 seconds)
Real time: 2,227 ms (2.227 seconds)
Total time (Compute + File Output):
CPU time: 10.644 seconds
Real time: 11.070 seconds
This shows that the Raspberry Pi 2 running Alpine Linux computed π to 1 million digits in ~8.8 seconds and wrote the result to a file in ~2.2 seconds, for a total execution time of about 11 seconds
Statistics: Posted by geev03 — Tue Mar 11, 2025 9:04 pm