Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Bug Reporting => [Max] Resolved Bugs => Topic started by: DustinMoore on 2019-07-08, 06:10:14

Title: Crash While Rendering Phoenix FD Smoke Plume
Post by: DustinMoore on 2019-07-08, 06:10:14

Im getting a render crash when rendering a rather larger scene with a Phoenix FD plume of smoke. CPU's at 98%, 11 GB of 32 GB RAM used and about 65 degrees Celsius MAX on CPU temp. Trying to figure out if its hardware or Corona. The image is shortly before it crashes.

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: rowmanns on 2019-07-08, 09:22:06

Hi,

Please can you provide your scene and a minidump from the crash?

Instructions on how to do this are in my signiture.

Thanks,

Rowan

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: DustinMoore on 2019-07-09, 05:56:50

Hi Rowan, thanks for the reply. Im having difficulty creating a dump file because Max crashes in a split second and doesn't give me time to save a mini dump. Is there another way to see whats happening? debug mode?

This is what Ive tried so far. I increased my page-file to 30GB to give enough room. I have 32GB RAM. Applied an override material to everything except the smoke and turned off some noisy lights. Its crashed every time except when Ive chosen not to render the smoke.

Daily Build from May 7. Denoise is off.

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: rowmanns on 2019-07-09, 08:39:37

Hi,

You are using quite an old daily build, can you try with the latest Corona release which is V4 Hotfix 1. It can be found: https://corona-renderer.com/download

Thanks,

Rowan

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: v.p.vlasenko on 2019-07-09, 10:30:57

Try to increase step size for volumetrics.
It's an old problem for me - I'm using openvdb clouds for renderings and I found that if step size lower than certain value it'll lead to crash instead of increased rendertime. The lower value - the faster crash, with instant crashes at some values.

For scenes 5-8 km in size I found that stable value is 15-20m. Anything lower will crash max after some time and values like 1-3 m will crash instantly.

Same problem I had with phoenix fd. Increasing step solved problem.

Seems like that not only my problem so corona team should look into that. I don't know what's the reason - grid size or scene size, had no time to check that.

P.S. Problem here for at least for half year with all builds.

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: rowmanns on 2019-07-09, 12:49:19

Hi v.p.vlasenko,

Would you be able to provide an example scene and some reproduction steps please? Instructions on how to do this are in my signiture.

Could you also please inform me which version of Corona and Max you are using?

Thanks,

Rowan

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: v.p.vlasenko on 2019-07-09, 14:03:37

My fault guys,

I've checked few scenes where I had such problem (latest with increased step was 28.05.19) - everything fine now. In each of those scenes I can change step size to very low without crashes (at least not instant ones).

Sorry for misleading.

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: DustinMoore on 2019-07-09, 18:17:16

Thanks guys, all helpful info. I will try the newest build.

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: DustinMoore on 2019-07-10, 00:20:33

Thats all I needed!

Title: Re: Crash While Rendering Phoenix FD Smoke Plume
Post by: rowmanns on 2019-07-10, 10:25:43

Hi,

Great! I'm glad it is working with the latest version!

Thanks,

Rowan