Vray 5 Light Caching Slow

[Luchifer]

Ok, for my second problem, recently upgraded to Vray 5 on Max 2020 and I opened one of the scenes I made recently to test. It's a bunch of Tyflow fractures flying past a product. When I click render it enters into the light cache stage and the counter goes all the way up to over 596 hours estimated time. I've added a picture of the render dialogue.

It's using all Vraymtl materials, GI is brute force and Light cache is set to 3000 subdivs, bucket sampling is Min = 1, max = 8. Has a single VRayLight in the scene.

Rendered without issue before but now it sticks at the light cache till it crashes.

[^Lele^]

Support would love the max dump, and ideally a file.

[Luchifer]

Support would love the max dump, and ideally a file.

Sure thing. I'll Wetransfer it over. --UPDATE-- ok the 3dmax dump file is 20gb in size so wetransfer is not an option. I'll see if I can still send the file across to Support and find another way for he dump file.

[^Lele^]

Wow, it dumped 20gb?
I meant the minidump, which is usually a few MBs (like 5).
It's indeed best if you talk to them, they may provide you with an FTP address or analogous.

[Luchifer]

Yeah it doesn't crash in the normal sense, it just sort of hangs forever so I created a dump file using task manager and it dropped a 19.7gb dump file instead of the minidump. Can't seem to find a way of making a minidump without the crash dialogue coming up. I can zip up the file and it's assets though so they can play around with it.

[^Lele^]

Nah, wait, i probably have a solution. Give me a second.

[^Lele^]

Here, process explorer.
It'll allow for minidumps to be created without the app crashing.

https://docs.microsoft.com/en-us/sys...ocess-explorer

p.s.:Thanks to matanov for the refresher!

[Luchifer]

Much better! Right I will send that over to Support. It's definitely having issues with Tyflow. If I hide the vornoi particles, it renders the product fine but it just can't handle all the fragments flying around.

[Luchifer]

Ah ha! Problem solved. The version of Tyflow I had was designed for Vray Next. Updated it to the latest version and it's all working as it should now. Lesson learned everyone, keep your stuff updated!

[^Lele^]

Ah, glad it's fixed!