rob (blenderpedia)
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User Since
May 12 2014, 1:35 PM (218 w, 4 d)

Recent Activity

Nov 14 2017

rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

Blender-fix solved the issue

Nov 14 2017, 8:10 AM · Rendering, BF Blender

Nov 13 2017

rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

I can confirm this fix works!
Thanks a lot for solving this problem.

Nov 13 2017, 10:13 PM · Rendering, BF Blender
rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

So nice!, now burn the CPU with some crazy scenes to find out if there is something wrong with scene buffering.

Nov 13 2017, 12:56 PM · Rendering, BF Blender

Oct 17 2017

rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

@Brecht Van Lommel (brecht), we don't have threadripper at the studio, only Ryzen 7 1800X.

Some other questions / ideas to troubleshoot the issue:

  • Make sure all Windows updates are installed.
  • Disable any possible power saving setting in BIOS.
  • Disable any possible power saving settings in Windows itself.
  • Disable HyperThreading.
  • Check whether Blender detects proper number of CPU threads.
  • Get Ubuntu LiveCD and see if there will be a performance issue on Linux.
Oct 17 2017, 12:55 PM · Rendering, BF Blender
rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

The first time i tried to render the scene was unpacked. After hanging for hours i started using all the benchmark files on the blender website and comparing this with my intel system. On this point i saw a significant difference between the threadripper and my intel sytem. Not on the small ones like the BMW, classroom, but the production benchmark and my own scenes. In my opinion most of the threadripper tests where done on these scenes, and not large scale RAM scenes.

Oct 17 2017, 9:28 AM · Rendering, BF Blender

Oct 16 2017

rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

@Brecht Van Lommel (brecht) I'm not sure he did the OpenMP test as you described.
The video showed him changing threads in the UI as opposed to a command line command. Is that the same?
Rob, can you verify that you ran this in command line?

cd c:\<blender installation directory>
set OMP_NUM_THREADS=1
blender
Oct 16 2017, 6:19 PM · Rendering, BF Blender
rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

Intresting result when doing a blender internal benchmark test. I used an 11 GB ram scene on my 4770K and threadripper workstations.

Oct 16 2017, 9:51 AM · Rendering, BF Blender

Oct 15 2017

rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

Which parts of the render are slow? The video shows just the synchronizing objects stage, is BVH build slow too, and path tracing?

Oct 15 2017, 1:47 PM · Rendering, BF Blender
rob (blenderpedia) added a comment to T53068: AMD Threadripper not working well with Blender .

I created a video including microsoft Process Explorer.

Oct 15 2017, 12:03 PM · Rendering, BF Blender

Oct 14 2017

rob (blenderpedia) renamed T53068: AMD Threadripper not working well with Blender from Threadripper not working well with Blender to AMD Threadripper not working well with Blender .
Oct 14 2017, 4:23 PM · Rendering, BF Blender
rob (blenderpedia) created T53068: AMD Threadripper not working well with Blender .
Oct 14 2017, 4:22 PM · Rendering, BF Blender