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Thread: AMD Threadripper 3990X and Lightwave

  1. #1

    AMD Threadripper 3990X and Lightwave

    I have just received my new 3D workstation (AMD 64/128 3990X, 256GB RAM, RTX 2080 TI, 2x 970EVO M.2 (RAID-0).
    I was a little worried regarding the many CPU threads and the Lightwave (2019.1.5) multithreading capabilities. But my concerns were swiftly put to shame. In the render panel all 128 CPU threads are automatically detected, and everything lights up as a Christmas tree (in the Windows task manager) as soon as I press F9.

    The speed is absolutely amazing. Same goes for simulating fire and smoke using the Turbulence FD plugin.

    The benchmark (provided by Erik Alstad) is rendered in just 35 seconds at a cool 51-degree CPU temperature. Probably heaps of room for overclocking.

    I can certainly recommend this CPU for LW work.
    /Ole
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  2. #2
    Curmudgeon in Training Ma3rk's Avatar
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    Congrats on joining the Threadripper club.
    Earth can't be flat otherwise cats would have pushed everything off the edge!

    The Big Apexx System:
    AMD RYZEN THREADRIPPER 2990WX Processor (3.00GHz)
    64GB
    2x NVIDIA Quadro RTX 4000 8GB 32 Core

  3. #3
    Quote Originally Posted by Ma3rk View Post
    Congrats on joining the Threadripper club.
    Thanks! Itīs like having īGPU renderingī without the bottlenecks
    /Ole

  4. #4
    creacon
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    Hi,

    Could you do a test with hyperthreading (or the AMD equavalent thereof) off?
    And maybe on a higher resolution like 4096 X 4096.

    thanks

  5. #5
    Very nice specs! I've had no problem running LW 2018 and up on my 2990WX but LW 2015.3 is a different story. It's very buggy working in it or rendering and very prone to crashing unless I reboot in 16 core 32 thread mode. It seems LW 2015.3 is only stable with 32 threads max at least on the 2990WX. I've moved on from LW 2015 though so it's not a big deal for me anymore.
    Threadripper 2990WX, X399 MSI MEG Creation, 64GB 2400Mhz RAM, GTX 1070 Ti 8GB

    https://www.dynamicrenderings.com/

  6. #6

    35 seconds
    Amazing!  

    i bet a Ryzen-7-3950 would do it in about 90 seconds.

    Your approximately 3 times faster machine is remarkable (!)
    Last edited by erikals; 04-20-2020 at 01:03 PM.
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  7. #7
    Registered User
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    Quote Originally Posted by samsoe View Post
    Thanks! Itīs like having īGPU renderingī without the bottlenecks
    /Ole
    Nice rig. The GPU has 68 SMs and the CPU has 64 cores, so they are similar spec wise. Both can run at 300W too, although the Threadripper has been overclocked to a toasty 1000W.

  8. #8
    Quote Originally Posted by creacon View Post
    Hi,

    Could you do a test with hyperthreading (or the AMD equavalent thereof) off?
    And maybe on a higher resolution like 4096 X 4096.

    thanks
    Hi,
    The rendertime for 4096x4096 is 599,9 seconds. That said I have multiple programs open, 30 browser tabs etc.
    I have not tried to disable hyperthreading in the bios yet.

  9. #9
    Quote Originally Posted by Free4Ever View Post
    Nice rig. The GPU has 68 SMs and the CPU has 64 cores, so they are similar spec wise. Both can run at 300W too, although the Threadripper has been overclocked to a toasty 1000W.
    Thanks, yes, it is blazing fast. The 2x M.2 RAID drives read and writes close to 7.000MB/Sec. Quite nice doing 8K comps in Fusion.
    The motherboard (Asus Zenith II Extreme E-ATX mobo with on-board 10GbE) has a small LCD screen displaying CPU temperature / warnings etc. quite nice.

    After rendering for a few hours the CPU temperature is still below 62 degrees running all cores on a 100%.

  10. #10
    Quote Originally Posted by erikals View Post

    Amazing!  

    i bet a Ryzen-7-3950 would do it in about 90 seconds.

    Your approximately 3 times faster machine is remarkable (!)
    It is such a game changer. Having this much power available without the need for turning on my Intel based dual Xeon machines are such a relief. The creative boost to go through a lot more iterations. It is so much fun to work with

  11. #11

    you PC is 31 times... Yes... 31 times faster than mine.

    according to CineBench, and CB is quite accurate.


    (crying in the corner)
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  12. #12
    Super Member kolby's Avatar
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    Quote Originally Posted by erikals View Post

    Amazing!  

    i bet a Ryzen-7-3950 would do it in about 90 seconds.

    Your approximately 3 times faster machine is remarkable (!)
    You mean Ryzen 9-3950x ?
    Yeah, mine did it in 97 seconds without OC.
    System info: CPU: Ryzen 9 3950X RAM: 32GB DDR4/3200MHz MB: Asus Prime X570-P GFX: Asus GTX 750 Ti / 2GB OS: Win10, LW2019x64

  13. #13

    Ryzen 9 ?
    sorry, yes, Ryzen 9... not Ryzen 7   
    p.s.  3950 is an OC friendly cpu, you might want to give it a try.
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  14. #14
    Quote Originally Posted by erikals View Post
    you PC is 31 times... Yes... 31 times faster than mine.

    according to CineBench, and CB is quite accurate.


    (crying in the corner)
    31.., that number sure is crazy. Originally I was aiming for the 16/32 Ryzen 9 3950X, but luckily a sprint job came by justifying the added cost.

  15. #15

    quite lucky   

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