> If I run two threads that are doing only calculations and very little or no > IO at all on the same socket will modern HT and dual core be the same > (or close) performance wise?
it depends on how cache/memory bandwidth sensitive your calculation is.... if your calculation is memory bandwidth sensitive then they're the same. If your calculation is very sensitive to have the dataset fit in cache.. it's another different ballgame again, because then it depends if the cores in your dual core share the cache or not. -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/