[gambit-list] Gambit on Raspberry Pi 2 B

Bradley Lucier lucier at math.purdue.edu
Tue Mar 10 11:34:22 EDT 2015


> On Mar 10, 2015, at 7:34 AM, Marc Feeley <feeley at iro.umontreal.ca> wrote:
> 
> 
>> On Mar 10, 2015, at 5:53 AM, Álvaro Castro-Castilla <alvaro.castro.castilla at gmail.com> wrote:
>> 
>> Awesome project! Raspberry Pi is truly a wonderful machine. Thank you for posting your results.
>> Since I don't have a reference performance, is this 20x difference expected or more than expected? Based on other tests with very different environments on mobile ARM, I would say that it should be on the 10x-50x ballpark.
>> 
> 
> The difference in bogomips is about 20x, so I think the 20x difference in execution time is expected.
> 
> Marc
> 

On my 5th generation iPod Touch, which also uses an Arm CPU, (expt 3 1000000) takes 429ms and then squaring that takes 440ms.

Which is almost exactly the same as on the Pi times when using gcc-4.8 with the good hardware specifications but keeping -fno-strict-aliasing.

Brad


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