Shutdowns When Using Denoiser (RTX?)

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Re: Shutdowns When Using Denoiser (RTX?)

Postby Lewis » Tue May 12, 2020 9:31 am

Lewis Tue May 12, 2020 9:31 am
bepeg4d wrote:Hi Lewis,
ok, but if sometimes it works, and sometimes is not, it means that it is not reproducible, and impossible to be fixed.
Could you try to connect an external PSU to one GPU only for some time, just to be sure that your PSU is not the issue?

ciao Beppe


I have 3 machines as i said so can't be that all PSUs are bad. Also my PSU is pretty new (less than 2 years for 1600Axi, 3 years for 1500AXi and warranty for thaose Titanium series is 10 years).
Yes problem is random, even when it crashes it's still random , sometime it renders 10 frames sometime 50 , sometime 70, no real case to report. If there was way to report it i'd be all over it reporting it already :).

My worakround is not use Denoiser , I do not have more time to wait for Crashes/shutdowns/restarts, i have to do some real client work istead wating for reboots and changing parts in workstation/renderslaves :D.

Thanks for help, i understand DEVs can't fix it if they can't replicate but i just wanted to share my experience 'coz as you see there is several of people reported having those problems with Octane denoiser/RTX so it's not just one of or hardware issue.
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Re: Shutdowns When Using Denoiser (RTX?)

Postby Rik » Tue May 12, 2020 10:12 am

Rik Tue May 12, 2020 10:12 am
bepeg4d wrote:Hi Lewis,
ok, but if sometimes it works, and sometimes is not, it means that it is not reproducible, and impossible to be fixed.
Could you try to connect an external PSU to one GPU only for some time, just to be sure that your PSU is not the issue?

ciao Beppe

I was going to try that. Saw a youtube clip of a guy doing it and he used a paperclip to short a couple of connections on the PSU.
Does that sound right?

Or better off with this...
https://www.amazon.com/gp/product/B00O0 ... b1f7d7c368
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Re: Shutdowns When Using Denoiser (RTX?)

Postby Lewis » Tue May 12, 2020 10:20 am

Lewis Tue May 12, 2020 10:20 am
Rik, Yes rather buy that spliter if you want to use dual PSUs (i had 1250+650W with spliter for 2 years). But be sure to buy good quality PSU spliter 'coz those wires can get hot so you can get melted connectors/plastic if connection is loose/not god quality and firmly fitting.
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Re: Shutdowns When Using Denoiser (RTX?)

Postby SSmolak » Tue May 12, 2020 11:48 am

SSmolak Tue May 12, 2020 11:48 am
Someone said that not to use denoiser on GPU connected to monitor.
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Re: Shutdowns When Using Denoiser (RTX?)

Postby amineghorab » Fri Jun 19, 2020 12:56 pm

amineghorab Fri Jun 19, 2020 12:56 pm
I have the same problem, 2 RTX 2080Ti connected together and I have always a shutdown when using the denoiser on octane (2020.1.2) - Cinema 4D R21.
Any solution please?
Thanks
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Re: Shutdowns When Using Denoiser (RTX?)

Postby whersmy » Fri Jun 19, 2020 1:15 pm

whersmy Fri Jun 19, 2020 1:15 pm
Can you check your memory usage spike? I`m on 8GB and can only render mid-res with denoiser on..

Planning to upgrade to 16GB
Last edited by whersmy on Mon Jun 22, 2020 10:44 am, edited 1 time in total.
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Re: Shutdowns When Using Denoiser (RTX?)

Postby bepeg4d » Mon Jun 22, 2020 8:26 am

bepeg4d Mon Jun 22, 2020 8:26 am
Hi,
if you are having issues with memory, you can have a CUDA error 2 or similar, but not a shutdown.
Please check the PSU, and give more power to your GPUs.
ciao Beppe
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Re: Shutdowns When Using Denoiser (RTX?)

Postby protokol » Mon Sep 28, 2020 8:20 pm

protokol Mon Sep 28, 2020 8:20 pm
Weighing in here.

Same issue. Was rendering multiple different projects throughout the day with denoiser disabled. Then accidentally switched to a camera that had a camera tag with denoiser enabled and had a full shut down after about a minute or two of rendering.

System specs:
CPU: i9-9940x (mild overclock thoroughly stress tested and stable)
RAM: 64gb DDR4 3000mhz
GPU: 3 x 2080ti
1 x 1080 ti
PSU: Corsair AX1600i
Mobo: Asus Rampage VI extreme

Cooling:
CPU + GPUs waterecooled via large eEK system. GPU's don't get higher than 55 degrees.


Drivers:
Nvidia - 451.77
C4d: S22.123 / R23.008
Octane: 2020.1.5 R3

Extra info:
I'm running 3 monitors all from the 1080ti which is in the last PCIE slot.

Hope this helps.
Last edited by protokol on Tue Sep 29, 2020 7:36 pm, edited 1 time in total.
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Re: Shutdowns When Using Denoiser (RTX?)

Postby bepeg4d » Tue Sep 29, 2020 7:26 am

bepeg4d Tue Sep 29, 2020 7:26 am
Full shut down is surely related to PSU.
How old is the PSU?
You have a lot of stuff connected, how many Watt is consuming during normal render without denoiser?
As always, my suggestion is to get an external PSU with paperclip trick to make it start without motherboard connection (EVGA PSUs come with an handy adapter to avoid to use the paperclip) and power the GPUs with it.
With 3x 2080ti probably you need 1000/1200W to be safe.

I personally have 2x machines in my office that are working in this way without issues.

ciao Beppe
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Re: Shutdowns When Using Denoiser (RTX?)

Postby protokol » Tue Sep 29, 2020 11:15 am

protokol Tue Sep 29, 2020 11:15 am
Hi Beppe,

The PSU (corsair ax1600i) is about 1 year old and is rated for 1600w which is 400-600 more than what you mentioned to be safe. During normal renders with all cards on extremely intensive scenes using they peak out at about 1300w but usually sit around 1200w.

I have run prime95 while running all 4 cards on an intense octane scene where they are all maxed out at 100% for several minutes without denoiser. My system got up to 1602w draw and still didn't crash. So the issue cannot be the PSU. Additionally when I render a simple scene that barely pushes the GPUs but I have denoiser enabled I will get the hard crash again. This does not happen 100% of the time but often (3-4 times a day). For the past 1.5 days I have been re-rendering scenes without denoiser which were all previously causing the crashing and have not had an issue now.

To reiterate - I have stress tested my PSU and it is rock solid over 1600w. I have stress tested (prime95, realbench, memtest, furmark) my system thoroughly and have not run in to any issues.

Can you confirm that I am understanding you correctly - everyone using 3 or more GPUs should be using dual PSUs? Even when one of them is rated at 1600w?
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