Octane crashing my computer

[Anim8me2]

I have been hammering away at solving this and I can't fix it.
Running the latest stable build, As soon as I enable path tracing Octane will start pushing my GFX cards and kill the system. Screens go black and the fans go into overdrive.
This happens in 2023 or r26.

Every other render engine (Arnold and Redshift) works fine. It's just octane

Last log file attached.

System:
Threadripper 3070
128GB RAM
Dual rtx 3090

[bepeg4d]

Hi,
please perform a clean installation of 516.94 Nvidia Studio driver:
https://www.nvidia.com/download/driverR ... 969/en-us/

To perform a clean installation, please follow these steps:


Then please, after reboot, download and run OctaneBench 2020.1, and share a complete screenshot of the result, thanks:
https://render.otoy.com/downloads/a/61/ ... _5_win.zip

ciao,
Beppe

[Anim8me2]

I installed the suggested driver, rebooted and ran Octanebench. I get the same result. As soon as Octanebench reaches the path-tracing section the machine crashes.

[Anim8me2]

I would agree, it as I stated octane is the only rendering engine that is causing this. I have tried it with Arnold as well as Redshift and Cycles and none of them have this issue. I can even push large scenes through Clarisse and I have no problems.

[bepeg4d]

If also OctaneBench is crashing, the system seems not quite stable to me

Ok, please try to go to Nvidia Control panel, menu Help, and enable the Debug mode, to work with GPUs at default clock, and run again OctaneBench:


ciao,
Beppe

[Anim8me2]

A crash often relates to a hardware failure. It would be suggested to look at hardware level (motherboard & PSU connections, properly powered components, etc).

I have checked every component and reseated all cables. I have also unplugged one of my graphics cards to remove power draw on the system, but the issue persists. I have also tried using the Octane version of Blender and it works without crashing. C4d and Octanebench still crash.

[Anim8me2]

Which PSU?
What does the the crash log says? If anyone has been able to have a look, as I can't open it.

Corsair AX1600i

[funk]

I have a similar setup here running without issues: Ryzen 5950x, 128GB RAM, 4090 + 3090 (previously dual 3090s), AX1600i PSU

I don't use C4D. I use Standalone and Modo, but can confirm Octanebench runs without problems too. Here's a couple of things to check while troubleshooting:

1. Make sure you have 1 PCIe power cable per 8-pin connection on the card.
eg. If your 2 cards have 3x8-pins each, then you'll need 6 separate PCIe cables.

2. If you are using any of the dual pigtail cables, don't connect the second pigtail.
Technically, connecting a pigtail cable to 2 card connections might work fine on this PSU, but avoid it for now just to be sure.

This PSU can be controlled by Corsair iCUE and has some settings to try/check:

3. Go to iCUE > ax1600i > device settings. Make sure each cable is set to 40A/40% (the default).
NOTE: I'm using iCUE v4.23.137 because I noticed a bug in newer builds which can set the PSU OCP amperage to the lowest setting (20A/20%).

4. You can also try running the PSU in Single Rail mode. iCUE > ax1600i > device settings > Single OCP. This should not be needed though.

[Anim8me2]

I have a similar setup here running without issues: Ryzen 5950x, 128GB RAM, 4090 + 3090 (previously dual 3090s), AX1600i PSU

I don't use C4D. I use Standalone and Modo, but can confirm Octanebench runs without problems too. Here's a couple of things to check while troubleshooting:

1. Make sure you have 1 PCIe power cable per 8-pin connection on the card.
eg. If your 2 cards have 3x8-pins each, then you'll need 6 separate PCIe cables.

2. If you are using any of the dual pigtail cables, don't connect the second pigtail.
Technically, connecting a pigtail cable to 2 card connections might work fine on this PSU, but avoid it for now just to be sure.

This PSU can be controlled by Corsair iCUE and has some settings to try/check:

3. Go to iCUE > ax1600i > device settings. Make sure each cable is set to 40A/40% (the default).
NOTE: I'm using iCUE v4.23.137 because I noticed a bug in newer builds which can set the PSU OCP amperage to the lowest setting (20A/20%).

4. You can also try running the PSU in Single Rail mode. iCUE > ax1600i > device settings > Single OCP. This should not be needed though.

Thanks, I'll try those.
I am going a little crazy because I can't get any work done. I'm trying to use Arnold but it's not my normal workflow and I can't get near the same look I'm used to.
This all started after I tried rendering C4D Pyro elements in Octane. I know it makes no sense but that was when the issue first appeared.

[Anim8me2]

[quote="funk"]I have a similar setup here running without issues: Ryzen 5950x, 128GB RAM, 4090 + 3090 (previously dual 3090s), AX1600i PSU

As an aside... where did you score the 4090... I've been looking.