On Wed, 22 Apr 2015, Paul E. McKenney wrote: > Agreed, the use case that Jerome is thinking of differs from yours. > You would not (and should not) tolerate things like page faults because > it would destroy your worst-case response times. I believe that Jerome > is more interested in throughput with minimal change to existing code. As far as I know Jerome is talkeing about HPC loads and high performance GPU processing. This is the same use case. > Let's suppose that you and Jerome were using GPGPU hardware that had > 32,768 hardware threads. You would want very close to 100% of the full > throughput out of the hardware with pretty much zero unnecessary latency. > In contrast, Jerome might be OK with (say) 20,000 threads worth of > throughput with the occasional latency hiccup. > > And yes, support for both use cases is needed. What you are proposing for High Performacne Computing is reducing the performance these guys trying to get. You cannot sell someone a Volkswagen if he needs the Ferrari. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>