Re: bigloo benchmarks: i386 vs. x86-64 vs. x32

MS wrote, 2017-01-04:
> Hi Sven,
> 
> Happy new year!
> 
>> I have 21 benchmarks results for the current beta version
>> (bigloo4.3a-beta07Dec16.tar.gz), with gcc 6.2.0 from Ubuntu 16.10:
>> 
>> i386    257016.0   430   760  1750   200  1090  1220   430  1690   870   950  5750   930   920   950  1250    10   830  1180  8850  1820   AVG
>> x86-64     -17.7 -13.1 -26.7 -12.5   0.1 -18.7 -24.5  -4.4 -46.9 -18.7   4.3 -18.8 -37.4 -15.8  -4.8 -16.0   0.1 -24.0  -1.4 -19.6 -32.6 -16.5
>> x32        -26.2 -16.8 -31.5 -16.5  -5.0 -25.4 -38.5  -4.4 -47.7 -44.2 -15.3 -18.0 -41.1 -28.8  -8.6 -34.6   0.1 -32.5 -37.8 -27.1 -32.6 -25.6
>> 
>> x32 refers to the x32 ABI, https://en.wikipedia.org/wiki/X32_ABI
>> 
>> The first benchmark is my own GC-intensive application,
>> the following 20 benchmarks are the ones from bglstone.
>> 
>> The x32 ABI is a clear winner!
> Very interesting indeed. Just to be sure I fully understand your experiment.
> I presume that all these tests have been executed using the same machine.

Yes.

> I understand the comparison between x86-64 and x32 but I'm not sure about
> i386. How did you measure the i386 performance? What do they correspond to?

i386 corresponds to a 32-bit bigloo installation on the same 64-bit computer, e.g.
by using -m32 -Wa,-32 for gcc.

Ciao
Sven