Interesting observation on Nvidea GPUs.

I have 2 I5 boxes w a GTX1060 each. One of them was a dedicated Einstein box the other splits it's time with Seti. The dedicated box always ran the Gama ray pulsar tasks ~ in 30m 2 at a time the other one consistently took over a min longer. My goal w the 2nd 1060 was to get my RAC here up to 500k then give Seti whatever resources that were left. Once I got there I gave Seti a small resource share from the first box and I noted my Einstein time increased by a bit over a minute. What i figured out was when either box finished a Seti GPU task it starts 2 Einstein tasks at the same time. That means they end at the same time so they do that low gpu usage thing for a couple of minutes, whereas if they start times are staggered when on task finishes the other is running and the gpu utilization is much higher and the run time drops. That doesn't sound like a lot but it is over 3 more a day getting done. 

I am in  the process of clearing out  Seti on the first box and will run a mixed load only on one. That will increase my Boinc thruput a fair amount.