> Thx, Muton, very interesting.
> Your findings differ a bit from mine. As I wrote above, for me -t4 was better than -t2, which was better than -t1.
> Any idea why ?
You are missleaded
If you call ufo2map with -t 1 and generate another ufo2map also with -t 1 .....
until you run out of cores (So you run n ufo2map process simultaneously)
You are faster than using -t n, If you set the affinitymask correctly (which my script does)
btw: There is no magic thats normal
> I didn't use -O3 or -march=core2.
> btw as there is no -march=i7, do you expect core2 to be better than nothing ?
You own a Core7
Yes there is no core7 in gcc but the important thing is SSE
If you use SSE you can remove option -ffloat-store
Just use core2duo optimation
btw. There is a option for SSE4.1