Any scenario in which a Threadripper 3960x would out-render 2x RTX 3090's?

JasonWNalley

PerttiA said:

SLI has never been supported (officially) for DS

You could try going back to older drivers and checking if anything changes, there is no rule that newer drivers are better than the older ones, and having been involved in developing GPU drivers in the past, I have learned that sometimes one just need to find the ones that work the best for what one is doing.

Sure, I get that.  I bought this PC in July of last year (I had VelocityMicro build it since getting my hands on 2x 3090 was proving to be nearly impossible), as far as I am aware, SLI was always on (it's not something I looked at when first receiving it), and it has rendered in SLI for the last 13 months without really a hitch.  So I don't think SLI is "the" problem, although it could be a contributing factor.  

However, even with it off, if you look at the first log file, that's SLI Off, the first render is with NVLink at 0 and the second is with NVLink at 2.  In both instances, the Display card only did 40-50 iterations, while the other card did closer to 7,000 iterations.  I don't think that's functioning as it should, or do you disagree?  In my previous dual 1070Ti setup, no SLI, no nothing, both cards shared the workload close to evenly.  So that's a problem, and it's one I need to figure out what's causing it.  

The SLI + NVLink I just find strange, as it indicates something is wrong in a serious manner because textures are being duplicated and overlaid onto surfaces they shouldn't be present on... So I think also figuring the reason that happens, might be worth exploring...  If my display card is going bad, or my NVLink Bridge is not functioning as it should, I'd like to find that out sooner rather than later... 

Edit:  Add the fact that what prompted this post was that my CPU was out-rendering my GPU's for whatever reason on the closeup, and we have a ton of information, I'm just not sure how much of it is useful or not... 

PerttiA

JasonWNalley said:

However, even with it off, if you look at the first log file, that's SLI Off, the first render is with NVLink at 0 and the second is with NVLink at 2.  In both instances, the Display card only did 40-50 iterations, while the other card did closer to 7,000 iterations.  I don't think that's functioning as it should, or do you disagree?  In my previous dual 1070Ti setup, no SLI, no nothing, both cards shared the workload close to evenly.  So that's a problem, and it's one I need to figure out what's causing it.  

That's why I suggested trying older drivers (several versions).

The minimum supported driver version is 471.41.

One should only use drivers from this site; https://www.nvidia.com/Download/index.aspx

 

JasonWNalley

PerttiA said:

JasonWNalley said:

However, even with it off, if you look at the first log file, that's SLI Off, the first render is with NVLink at 0 and the second is with NVLink at 2.  In both instances, the Display card only did 40-50 iterations, while the other card did closer to 7,000 iterations.  I don't think that's functioning as it should, or do you disagree?  In my previous dual 1070Ti setup, no SLI, no nothing, both cards shared the workload close to evenly.  So that's a problem, and it's one I need to figure out what's causing it.  

That's why I suggested trying older drivers (several versions).

The minimum supported driver version is 471.41.

One should only use drivers from this site; https://www.nvidia.com/Download/index.aspx

 

I'll give that a try.  They just released new Studio Drivers today, I updated after I completed this morning's render, and I'm rendering a video right now, so I'll check out the log on that once it's done and see if there's still a huge disparity.  If so, I'll try and roll back drivers and see what's what.  I only use official NVIDIA studio drivers, not the game ready ones.

nicstt

JasonWNalley said:

I zoomed in on the lightsabers and they seem to be crazy high too, but they don't have a "High Resolution" under the resolution level and I cannot change the SubD (because it's not an option due to not being a High-resolution model).
 

Both very high, and looks to be tris not quads; tris can have issues when sub-ded.