On 03/13 06:27, Stroller wrote:
>
> > On 13 Mar 2017, at 16:27, tu...@posteo.de wrote:
> > On 03/13 08:06, Martin Vaeth wrote:
> >> You appear to have experimental CFLAGS. Try without these.
> >>
> > Could you specify, what parts of that settings are experimental,
> > so that I will remove the correct ones?
>
> Your flags are:
>
> CFLAGS=-march=native -O2 -pipe -ffast-math -fopenmp -fprefetch-loop-arrays
> -ftree-parallelize-loops=12 -funroll-all-loops -fwhole-program
> -mtune=amdfam10
>
> Google each one of them, see what they do. There's probably a gcc manual that
> explains them.
>
> "funroll-loops" has long been a joke about Gentoo ricing.
> https://fun.irq.dk/funroll-loops.org/
>
> I would guess you'd take that out and -ftree-parallelize-loops for a start.
>
> If you want to use the program, compile it with just `CFLAGS=-march=native
> -O2 -pipe` - I'm sure that will work. Then you can go back and see what
> options you can add without crashing the compile. These options often do not
> actually make things faster.
>
> Stroller.
>
>
Hi Stroller,
THANKS A LOT ! :) 8)
That helps me!
Cheers
Meino