(But: does the 1% speedup you get through optflag tweaking really warrant a complete distribution rebuild?) I'm quite interested in how it will affect the system actually. Especially for the bulldozer architecture various people claim 50% enhancement if used with open64 compiler and gcc 4.8 with march=bdver2 being about the same level of improvement. I am using suse since more
Michael, Adrian 1st thanks for your answers! than 10 years now, so even a test of gentoo if there is a performance benefit is a no go :-) 2013/9/16 Adrian Schröter <adrian@suse.de>:
Am Montag, 16. September 2013, 16:10:36 schrieb Damian Ivanov:
Hi,
I want to recompile the whole OSS 12.3 or maybe when 13.1 is out the 13.1 repo with specific optimizations (in particular for bulldozer v2 "vishera"). So when I run a VM with the OBS appliance where can I set the global flags? in /etc/rpm ? Will this even work or are the spec files full of hardcoded "if or" for x86 and x64?
Compiler optimizations? Use OptFlags: in your prjconf.
--
Adrian Schroeter email: adrian@suse.de
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