Best PC for simulation

[cb LLC]

Hi Could you recommend what is the best PC to get for fastest simulation posssible like i9 or xeon, how many core and what ram

currently we are using i7 6700k at 4 ghx and 64gb of ram ddr 2133 mz ram samsung ssd Any better PC to get to make it 4 times faster


6 million cells at SPF 2 takes about 15 seconds per frame but it slows down a lot once it goes over 50 mill cells

thank you

[Svetlin.Nikolov]

Hey, here you go https://docs.chaosgroup.com/display/...sterSimulating

Apart from the SSD and fast memory, aim for a board with the best bus speed possible, and if it's a Xeon, watch out if it's got more than one NUMA nodes.

Hope this helps

[flipbook]

I have just built an i7 6900k, 64gig ddr4 3200mhz, 512gig M2 and 2TB SSD drive. Doing pretty well for simulations. The problem is the memory and I think it is a common problem on x99 boards. To get the memory running at 3200 (XMP) then the board tends to pump more voltage etc. At the moment I am trying to find a balance as it runs far too hot at default levels.

[cb LLC]

Hey, here you go https://docs.chaosgroup.com/display/...sterSimulating

Apart from the SSD and fast memory, aim for a board with the best bus speed possible, and if it's a Xeon, watch out if it's got more than one NUMA nodes.

Hope this helps

One more question.

Iread "Processor speed is more important than core count."

Should I get 6 core i7 at 4.5 ghz or 18 core i9 at 3.5 Ghz Do you still think having 3 times more cores is better than 6 cores that are faster?

[joshclos]

Should I get 6 core i7 at 4.5 ghz or 18 core i9 at 3.5 Ghz Do you still think having 3 times more cores is better than 6 cores that are faster?

I also have my eye on that 18 core i9 (whenever it is supposed to come out) but in my case, I'm searching for a solution that is great for simulations and also for rendering, which would make the core count more relevant. I think you may be correct that the higher frequency is likely to be better than overall core count strictly for simulations but as Svetlin pointed out, bus speed is a common bottleneck so perhaps it may come down to the motherboard before the cpu.

I'm curious to learn about the limitations of NUMA nodes. Does that refer to the actual number of processors? Does 2 processors mean 2 NUMA nodes? I've read Svetlin's warning that having more than one NUMA can slow things down in the long run but haven't tested it thoroughly. I'd love to have a benchmark simulation (possibly an approved simulation scene from Svetlin & Chaos Group) that properly stresses the hardware and could be used for comparing configurations by comparing the sim times.

[cb LLC]

what about Intel optane will it help simulation

[Paul Oblomov]

Even ram drive no help.
I tested some hardware, and well the difference is not that big, between my hi core/lo ghz VS lo core/hi ghz, tho it exist.