Rendering Get stuck on Building Geometry

[brad_boggs]

Hi, I've been working on a small product scene for a client and I've run into some issue's rendering out the scene. Before the issue started I had already rendered out a few images with the same settings. I set up a new camera and all of sudden the "building dynamic meshes tree's" phase has taken over 45min to complete but I can't seem to move forward for the image to render. I'm not sure why this happening as nothing changed from what I was doing before other than adding a new camera to render at a different angle. I'm using the newest version of Vray 5 update 2. 2 with the latest Nvidia Studio drivers 511.09. I'm rendering with Vray GPU with brute force and light cache. I've also attached the scene files. This has happened a couple different times on various projects now so I'm not sure if it is something in my setting or I'm doing something else wrong.

My computer system is as followed:
CPU -Intel Xeon W-2295 3.0GHz 18 Core 24.75MB 165W
Ram - 4x Micron DDR4-3200 32GB ECC Reg.
Video Cards -2 NVIDIA RTX A6000 48GB

Any help would be much appreciated. Thank you.

[brad_boggs]

Sorry, this is in 3ds Max 2022.

[fixeighted]

It works for me using a 2080ti so that's good in a way. There were 3 sbsar files missing but that didn't cause any issue, though potentially it could be I guess.
I notice that there are many errors in the model itself...coplanar faces and flipped normals, broken mesh geometry....possibly there is something to look at there.
You could try incrementally hiding elements to maybe indicate a problem piece. It's a simple model so if it's that then it's easily rectified.
Otherwise a clever dev will maybe see another conflict

[brad_boggs]

Thanks fixeighted for checking it out. Yes, the model has a ton of errors and that's pretty common when the manufactures send me their models. Most of the time I don't have time to fix them so I try to work around those issue if I can. Hopefully that's not the issue. I did some testing today and the only fix I've figured out is lower the subdivs under the light cache by quite a bit and that seems to help. Thanks again!

[fixeighted]

Yeah some people have no idea how to export CAD properly

I did notice you had very high settings for everything but that shouldn't necessarily be problematic, as my single
card has none of the issues you're getting.
Anyway, good you got a result of sorts.

[Muhammed_Hamed]

Hi brad_boggs and welcome to the forums,

I have checked your scene, I'm not able to reproduce the issue on my side. I tried different settings, and multiple test renders it doesn't get stuck for me.
Could you please record a video on getting this behavior? or do you prefer a remote session, we will take a look at your setup?
On another note, bad geometry can lead to issues including crashes, this is the nature of GPU rendering. even if it renders fine on CPU
And like what fixeighted said, your sampling settings are very high. 3000 to 4000 Samples limit and 2000 LC Subdivs should work well for your scene

Best,
Muhammed