>> > It is clear the the CPUs run at 2.4 GHz and not 1.6 GHz as >> > https://gcc.gnu.org/wiki/CompileFarm claims. >> >> That isn't clear at all; what test did you use? >> >> A tight loop in assembly code. Aside from loop control, I use a >> dependent chain of plain instructions, and measure the delta as I change >> the count of dependent instructions. >> >> Modern pilelines are complex, so the counts might fluctuate bit. These >> didn't; 3 dependent instructions took 3 2.4 GHz cycles, 4 dependent >> instructions took 4 2.4 GHz cycles, etc. > > I remember being told these were 1.6GHz machines when we arranged for > these to be delivered - will double check.
I can confirm Torbjörn's findings even by comparing to results collected on another X-Gene system I had access to. On side note it can be added that X-Gene is "weakest" processor in the family. Well, while integer-only subsystem measures up to one in Cortex-A5x, memory and NEON subsystems perform significantly worse. _______________________________________________ Gcc-cfarm-users mailing list Gcc-cfarm-users@gna.org https://mail.gna.org/listinfo/gcc-cfarm-users
