Re: Going to be slow regardless
On a similar note:
Latency Numbers Every Programmer Should Know
http://www.eecs.berkeley.edu/~rcs/research/interactive_latency.html
Some of the details are a little out (i.e main memory access is now lower than 100ns - mid-70's looks more accurate) and memory access across QPI links is around 300ns (+- 20ns).
Main issue with QPI scaling (and any switch based scaling) is that latency quickly jumps as you chain switches to add more cores/PCIe lanes
Biting the hand that feeds IT
