Re: Poor performance with GNAT-GPL-2017

[Anh Vo <anhvofrcaus@gmail.com>]

On Thursday, June 15, 2017 at 9:31:52 AM UTC-7, Charly wrote:
> Am Donnerstag, 15. Juni 2017 17:19:20 UTC+2 schrieb Charly:
> > Am Dienstag, 13. Juni 2017 21:46:13 UTC+2 schrieb alkh...@gmail.com:
> > > On Monday, June 12, 2017 at 6:28:17 PM UTC+3, Mark Lorenzen wrote:
> > > > On Saturday, June 10, 2017 at 1:23:34 PM UTC+2, Charly wrote:

> > -----
> Some aditional strange results, all without any tasking (new option -t 0)
> 
> gnat-gpl-2016 -O
> duration 3485 ms
> 
> gnat-gpl-2016 -O2
> duration 4713 ms
> 
> gnat-gpl-2016 -O3
> duration 2772 ms
> 
> gnat-gpl-2017 -O
> duration 3375 ms
> 
> gnat-gpl-2017 -O2
> duration 4480 ms
> 
> gnat-gpl-2017 -O3
> duration 4823 ms
> 
> To summarize I draw two conclusions
> This year optimization level -O is the best choice,
> Try several optimization levels next year when gnat-gpl-2018 is out.

What numbers will you get if you run it say 10 times?

Anh Vo