i’ve bought two E5-2697 v4 engineering sample CPUs from ebay. theyve got slightly lower clock speeds then retail ones. i bought them because they cost only 600$ each which is incredibly cheap. but there could be problem with software support.
i only get 50% load in unreal. one core is 100% loaded and the other one is idling. sometimes cpu 1 is idling sometimes cpu 2. tho pint is they dont work on full load at the same time.
can this be fixed?
i googled a lot and other poeple had the same issues with other programs with retail xeons so im not sure if the fact that these are engineering samples (notice the name in task manager: genuine intel cpu 0000)
Im not sure does developers understand the problem, in this case windows platforms, but here it goes…
I had experience with some rendering engines (vray, arnold, mr, etc), so the general problem is in windows, some smart guy made a stupid solution for cpus above 64 threads, and it looks like this:
if you have cpus with more than 64 threads, windows will make 2 cpu groups, so 1st group is group0 and it will have max 64threads and group1 the rest of it. Unfortunately only solution is developers to rebuild the application so it could read not only cpu group0 but to read all cpu groups… If you check the processes of some application under affinity
you should see something like this, i guess it might take some time for your cpus, my friend, thats why i took e5-2683 v4 = 64 threads in total
btw, in linux there are no cpu groups, so linux doesnt have this kind of problem
