[Alan wrote:] > Interesting, thanks. For what kind of architecture are these -
You are welcome. You raised 2 or 3 good points, I think. First: the numbers are all from builds on and for the AMD64 ISA, AKA "x86_64". My apologies for forgetting to mention that vital fact. Second: I did not tell the SPEC build system to use any particular "-march" or "-mtune" flags, and AFAIK it [SPEC] did not add any that I didn`t specify. In other words, those compiler-tuning values were almost certainly at their GCC defaults. [A question about the preceding: is "-march=native" the default nowadays, at least on GNU/Linux? AFAIK the default GCC behavior is (still?) to generate code for the most generic form of the target ISA unless an explicit flag overrides this.] Third: the server in question has Intel silicon for its CPUs. If an implicit "-march=native" or similar is suspected of having been a factor, then please let me know and I`ll report back on the specifics. [I am at home right now, so I have no easy way of getting that data right now.] > specifically: with/out masked/gathering loads/stores ?? TTBOMK, generic AMD64/x86_64 does _not_ have the gathering stuff and the very latest from Intel _does_. Sorry, but I don`t know about the masked form[s]. If that`s important to know, then please tell me and I will investigate. Regards, Abe
