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hwbot multipi - multithreaded superpi (open beta)
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Old 14th August 2006, 21:35   #1
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Default hwbot multipi - multithreaded superpi (open beta)

Hi guys,

I wrote a superpi app that calculates pi, but unlike superpi it dedects how many processor cores you have, and spreads the calculation over those available.

It works pretty well, but I need some feedback and comments on the length of calculation and stuff. It takes pretty long on a midrange processor (about 3 minutes on a 2ghz A64), but as it takes use of multiple cores, calculation on a decent dual core proc is about half. I think a 5ghz conroe may hit 30 seconds.

Some testruns i did:
Intel Pentium M 715 (1.5Ghz): 3m 18.815s
T2500 (mac osx), 2 cores: 1m 47.127s
T2500 (mac osx), 1 core: 3m 08.163s

I know some guys are going to nag because it's written in java, and you need a java vm installed, but as mac/linux user i'm tired of seeing windows-only benchmarks. This is one we can all enjoy.

If interested, you can betatest multipi v0.1. It runs on linux, mac, win32 and win64, but requires java 5 (1.5) to be installed. Just unzip and run multipi.bat or

Comments and thoughts can be posted here:

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Old 12th September 2006, 00:58   #2
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Old 12th September 2006, 01:10   #3
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