Does lightmass benefit from RAM or GPU
I understand lightmass is CPU bound, I am thinking about putting together a dual xeon light build machine (56 threads) for my office so I am looking into parts. Essentially one of our dev machines would be paired with this machine.
Our dev machines have 1080s and 32gb ram, can the light build machine be gpuless and have 4gb since the dev machines will also be contributing to the build or should the light build machine have something like 32gb and a gpu?
asked Feb 23 '18 at 07:27 PM in Using UE4
from my experience there is a boost in performance by having a bigger gpu.
We use a little farm that build lights within the network, so adding computers is a great idea.
You can make a simple test and benchmark how long it takes to bake in a notebook and in a bigger computer the same little scene. You will find notebooks and desktop computers to share same ammount of ram usually, and that dont seem to be a factor for speed.
Difference could be found in your CPU though, i guess gpu vs cpu would be a propper question to ask. I bet that due to the architecture of unreal, gpu is the most important factor, but I dont know the details of light mass itself.
CPU could make a difference in speed, ram would only give you the limit of complexity you can handle.
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