4 ms·
Wow, interesting. Thanks for the info and the link. This is a surprising and disappointing aspect of this CPU. Do you know if there's something about this (see
by iigs 18y ago
Wow, interesting. Thanks for the info and the link. This is a surprising and disappointing aspect of this CPU.
Do you know if there's something about this (seemingly trivial) workload that is pathologically bad for this processor, or do you believe that the CPU is just wimpy? I've only ever had a glossy spec-sheet-level introduction to these at work. Given this load I don't see the value of "4 threads per core" that they proclaim on http://www.sun.com/processors/UltraSPARC-T1/specs.xml http://www.sun.com/processors/UltraSPARC-T1/specs.xml
- mfp 18y agoIt's just that the hardware threads are slow, I think --- compiling stuff on the T2K also took forever. It also seems to me that there's seemingly little value in having 4 threads per core: it forces you to parallelize programs that ran fine with normal cores just to match the performance you'd get without hardware threads...