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Moore's Law Will Die Without GPUs
Stoobalou writes "Nvidia's chief scientist, Bill Daly, has warned that the long-established Moore's Law is in danger of joining phlogiston theory on the list of superseded laws, unless the CPU business embraces parallel processing on a much broader scale."
So, a graphics card manufacturer says that graphics cards are the future? And this is news?
Obviously "NVIDIA's Chief Scientist" is going to say something about the epochal importance of GPUs; but WTF?
Moore's law, depending on the exact formulation you go with, posits either that transistor density will double roughly every two years or that density at minimum cost/transistor increases at roughly that rate.
It is pretty much exclusively a prediction concerning IC fabrication(a business that NVIDIA isn't even in, TSMC handles all of their actual fabbing), without any reference to what those transistors are used for.
Now, it is true that, unless parallel processing can be made to work usefully on a general basis, Moore's law will stop implying more powerful chips, and just start implying cheaper ones(since, if the limits of effective parallel processing mean that you get basically no performance improvements going from X billion transistors to 2X billion transistors, Moore's law will continue; but instead of shipping faster chips each generation, vendors will just ship smaller, cheaper ones).
In the case of servers, of course, the amount of cleverness and fundamental CS development needed to make parallelism work is substantially lower, since, if you have an outfit with 10,000 apache instances, or 5,000 VMs or something, they will always be happy to have more cores per chip, since that means more apache instances for VMs per chip, which means fewer servers(or the same number of single/dual socket servers instead of much more expensive quad/octal socket servers) even if each instance/VM uses no parallelism at all, and just sits at one core = one instance.