On 24-Sep 17:56, Peter Zijlstra wrote: > On Mon, Sep 24, 2018 at 04:14:00PM +0100, Patrick Bellasi wrote: > > On 21-Sep 11:13, Peter Zijlstra wrote: > > > Laptops with active cooling however... > > > > How do you see active cooling playing a role ? > > > > Are you thinking, for example, at reduced fan noise if we remain below > > a certain OPP ? > > > > Are you factoring fans power consumptions into the overall P consumption ? > > Nothing as fancy as that; I just figured that with a larger cooling > capacity, you can push chips higher onto that curve past the optimal > IPC/Watt point. Make it go fast etc..
That very concept of "optimal IPC/Watt" point is not something easy to define considering a monotonic function and without considering the specific optimization goals. It really sounds like saying that an LP problem has a unique solution independently from the optimization function. Do you think we should "mandate" an optimization function from kernel space? I'm not saying it does not make sense, but I find it at least a strong implementation enforcement. -- #include <best/regards.h> Patrick Bellasi
