Hello, I have Debian testing distro with gcc 4.7.2 running on virtualbox where assigned 8 cores and have some questions regarding gcc optimize flags. I want run mencoder to filter big resolution video with uspp (that filter calling snow encoder for encode/decode and avarage result (snow from ffmpeg what is compiling with mencoder)). I use simple flags like -O3 -march=native -mtune=native -mssse3 -fomit-from-pointer (cause it is virtual host it see my i7 like core2 with max ssse3 instruction). Is a way to compile for use more than one core/thread without changes in sources, only just by add optimize flags? What flag would be best for virtual host and speed up filtering? Is a way to check if it is memory or cpu problem? (filtering with max quality filter on fullhd source is 1 thread and 0.23 fps speed) Mike -- View this message in context: http://gcc.1065356.n5.nabble.com/optimize-for-multicore-tp905972.html Sent from the gcc - Help mailing list archive at Nabble.com.
