Hello,
I just wanted to test Arnold on a new Windows machine, to test its capabilities on that machine.
But Arnold is crashing most of the time instantly on rendertime.
I´ve run multiple benchmarks and stresstests and everything worked out fine.
The render finishes when I manually reduce the threads Arnold is allowed to use (to 48). The same, very simple scene (just some cubes and arnold sky), renders fine with Arnold GPU.
Other C4D renderings (physical, standard, redshift) working fine with 100% CPU use.
Is it a threadripper or memory issue?
WINDOWS 64 BIT
AMD Ryzen Threadripper 3970X 32-Core Processor
RAM: 128GB DDR4 Corsai C3200 C16
GPU: 2x Nvidia 2080 Ti
Cinema R20 (Tried it on R21 - same issue)
C4DtoA 3.0.2
best,
Marty
I'm on R21 with a 3990X with all cores/threads active and it's been super stable with rendering (I've let a render go overnight with no problems) so I'd guess it's not because of core/thread count issue with Arnold or a Threadripper issue in general
What memory DIMMs do you have?
Does rendering the same scene from kick work? That would help to tease out whether it's a c4dtoa/c4d issue or possibly a problem with the machine.
Are they in XMP mode? Were they on the list of compatible modules for your board?
Also sometimes when you're running a lot of RAM, it may not be stable running at the rated speed (depends a lot on the board and the modules)... I've been able to run 64GB at 3200 on my current board, but my previous board I was using 128GB and had to drop the RAM speed from it's XMP rating of 3200 to 2800 in order to get the machine stable
Ok, it looks like it was a Hardware "bug". The mainboard has an inbuild memory overclocking feature which was on by default. Disabled all "Ai.Tweaking" features and now Arnold runs stable. Arnold was the only software that apparently had a problem with the overclocking - whatever it did. Good to know.