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
