Messages

16

[Max] General Discussion / Re: is this UI sluggishness normal?

« on: 2023-12-14, 10:49:08 »

UPD: installed Corona 10 HF3:
- when performing alt+W to see all my viewports, max freezes for 1-2 sec (as usual) and overall viewport performance does not drop. So I can continue to work with ~50 FPS[/b]

So the issue would be related to Corona 11? I don't have any particular problem when I display all viewports with Alt+W under Corona 10HF2.

Hi,

I have corrected my original message to be more clear.
With relatively large scenes, it is common to experience a one-time 1-2 second freeze when performing ALT+W, so I described this as normal behavior. With Corona 10HF3, I have no problems with viewport performance at all. After one-time 1-2 second freeze I have my 50 FPS again. With Corona 11 I have 1-3 FPS.

Best Regards

17

[Max] General Discussion / Re: is this UI sluggishness normal?

« on: 2023-12-13, 10:35:16 »

I've had 3dsMax get sluggish on me after I do an alt+W to see all my viewports. Before I do that, 3dsMax operates smoothly, even with a complex file. But after I do that, anything I do leads to a 1-2 second lag.

Same here!

I experience an instant and significant performance drop when using "show all viewports." I mainly skipped Corona 10 and installed Corona 11 a few days ago. Yesterday, I opened a relatively simple scene created with Corona 9, then pressed ALT+W (show all viewports). The viewport performance dropped dramatically, in my case, from 50 to 1-3 FPS (CPU usage when rotating viewport goes up to 28%). I tested this on 3ds Max 2022 and 2024 with fresh ENU folders and default viewport texture resolutions.

I took some actions to understand where the problem lies:
-Changing the viewport from perspective to other views in a single window (left top corner) does not result in a performance drop.
-Changing viewport settings and texture resolutions does not help. Even with bounding box mode, I still experience 1-3 FPS.
-Importing the scene into a new one doesn't change the result. The scene is laggy from the beginning.

Currently, I don't have time for further investigations and tests, so I need to revert to the previous version (I will try Corona 10HF3 first) and finish the project.

Best Regards

UPD: installed Corona 10 HF3:
- when performing alt+W to see all my viewports, max freezes for 1-2 sec for one time (as usual) but overall viewport performance does not drop as in Corona 11. So I can continue to work with ~50 FPS

18

[Max] Bug Reporting / Re: Memory leak (Phoenix + Corona)

« on: 2023-12-09, 13:42:04 »

Hi,

This issue is fixed in the latest Phoenix nightly.

You can grab the latest nightly from here: https://nightlies.chaos.com/ If you have trouble accessing this page you can submit a support ticket and they'll give you access.

Cheers,

Rowan

Hello, Rowmanns,

Thank you for the updated information. I have installed Phoenix nightly build (2023-12-08) and started the scene, tested it on the first 60 frames:

- There are no issues with RAM anymore.
- At frame 25, I got Corona NAN error (Corona 11 Final), but the rendering continued fine.
- I rendered until frame 60, closed and reopened the scene to check if the NAN error would appear again.
- There were no more NANs.
- I finished testing up to 60 frames without issues with RAM and NANs.

What do you think? Should I test it a bit more because of the NAN in the first launch?

Best Regards

19

[Max] I need help! / Re: 4k Cache - What's the latest? (2023/4 Update)

« on: 2023-12-06, 14:34:08 »

Is it only useful for Animation or does it benefits Single frame images. And which scenario is it much better than Uhd Big windows interior scene vs Standard window interior scene?

I personally use it always: for single images and animations.

20

[Max] I need help! / Re: 4k Cache - What's the latest? (2023/4 Update)

« on: 2023-12-05, 21:13:43 »

Hi devs, struggled to find news on this but what's the latest on the 4k Cache? Is it still undergoing development? Is it recommended for use in any particular scenarios over standard UHD Cache?

Cheers,

Hi Alex,

4K Cache has been my default secondary solver since its release in Corona Renderer 6. I remember that, at that time, I was working on a retail store with UHD cache, and the results were good. However, I then experimented and tried 4K on the same camera. I was really impressed by how many "splotches" UHD cache produced in comparison with 4K cache. It was almost invisible if you looked only at the UHD cache result, but very noticeable when you compared them both via VFB history.

In my experience, 4K Cache is also about 10-20% faster in rendering, and it precomputes really fast, which is especially good for animations and gave me trouble only once—I got around 5 frames of my 300-frame animation corrupted. The frames were rendered only partially and had analog film defects..I had to re-render 5 frames with the same settings individually, and the problem was resolved. 4K Cache also works well with the Intel AI Denoiser.

One significant issue with 4K Cache is that you can not get proper results when baking the textures with explicit normals. I have described this issue here:
https://forum.corona-renderer.com/index.php?topic=27953.msg210801#msg210801

Best regards

21

[Max] Bug Reporting / Re: Memory leak (Phoenix + Corona)

« on: 2023-11-27, 18:20:09 »

Hi,

Yeah, unfortunately, that fix was for a slightly different issue, not relating to Phoenix

We have been looking into this deeper.

It seems that this is actually an issue within Phoenix. We have forwarded it on to the Phoenix team, and they are now investigating a fix for it.

Thanks,

Rowan

Hello, Rowmanns

Thanks for the information. This is interesting because Arpit Pandey, who replied to my support ticket, wrote :

"After our investigation, we have identified that the problem is caused by the PhoenixFDGridTex map which is connected to the 'Paint mixing via Phoenix RGB channel' material in your provided scene. If you disconnect the PhoenixFDGridTex map from the material, the RAM usage remains stable during rendering.

We have logged this issue as a bug report in our system to be further reviewed by our devs. If there will be any update on this, we will let you know.

It seems the issue is related to Corona, I also investigated it with V-Ray, and it seems to be rendering fine with V-Ray. I have already reported this to our devs. At the current time, we don't have any specific workaround. As soon as we have any update on this we will let you know."


In any case, the most important thing is that it is in the progress. Because in Phoenix, there are enough cases where it is necessary to mix the colors of liquids and leave the corresponding color via wetting map of them.

Best regards

22

[Max] Bug Reporting / Re: Memory leak (Phoenix + Corona)

« on: 2023-11-24, 20:22:12 »

Hi,

Would you be able to test this issue in v11 RC2? We have not been able to reproduce the issue there.

Thanks,

Rowan

Hello, Rowmanns

Just tested Corona 11 RC3 because I saw this under bug fixes:
Fixed rare issue where the rendering could get stuck and consume large amounts of RAM.
Sadly, my case with Phoenix and Corona is not resolved.

I must admit, the engine behaves a bit differently:

- Initially, the RAM consumption increases (from 32% to 88%) from frame 0 to frame 7.
- Then, a low RAM memory window pops up.
- After that, the rest of the RAM gets accumulated (99%) until frame 13.
- Suddenly, RAM consumption drops drastically (50%), but then the cycle repeats and ends with an unexpected error due to no available RAM.

I needed to completely restart my PC because most of the other programs also stopped working. I hope you can fix this by the v11 release.

You can find the attached video.

Best Regards

23

[Max] I need help! / Re: Lots of light dots and noise in my renders

« on: 2023-11-23, 20:14:13 »

After all these steps, you could also try the Intel CPU AI Denoiser + Tent Filter to get faster results. This denoiser model does a great job even for animations.

24

[Max] Bug Reporting / Re: Memory leak (Phoenix + Corona)

« on: 2023-11-21, 21:37:37 »

Hi,

Would you be able to test this issue in v11 RC2? We have not been able to reproduce the issue there.

Thanks,

Rowan

Hello Rowmanns,

I just installed Corona 11RC2 and tested the scene again. The problem is still there. Please look at my attachment.

Best Regards

25

[Max] General Discussion / Re: Corona 10 - Corona Render Assets loading very slow

« on: 2023-10-31, 17:36:45 »

Here is how it works for me - https://youtu.be/Lscohf5ga_Q
Corona 10 HF2
Max 2024
Ryzen 3900X
SSD
32 GB of RAM

Hello Maru,

Thank you very much for your video and advice. There is definitely something wrong with my machine.
However, before going through these steps, I reverted to Corona 9, and I also have some interesting time scores:

[3ds max 2022]- old settings (display performance - all 4096)
- Scene loading time: 10 minutes (Corona 9 HF3) VS  9 minutes and 50 seconds (Corona 10 HF2)
- Picking multisub material:  1 minute and 5 seconds (Corona 9 HF3) VS 10 minutes (Corona 10 HF2)

[3ds max 2022] - fresh ENU folder (display performance default)
- Scene loading time: 40 seconds (Corona 9 HF3) VS 1 minute and 20 seconds (Corona 10 HF2)
- Picking multisub material: 1 minute and 15 seconds (Corona 9 HF3) VS  1 minute and 45 seconds (Corona 10 HF2)

[3ds max 2024] - fresh ENU folder (display performance default)
- Scene loading time: 45 seconds (Corona 9 HF3) VS 47 seconds (Corona 10 HF2)
- Picking multisub material: 1 minute and 30 seconds (Corona 9 HF3) VS 45 seconds (Corona 10 HF2)

[3ds max 2022] - fresh ENU folder (display performance lowered all to 256)
- Scene loading time: 14 seconds (Corona 10 HF2)
- Picking multisub material: 55 seconds (Corona 10 HF2)

[3ds max 2024] - fresh ENU folder (display performance lowered all to 256)
- Scene loading time: 11 seconds (Corona 10 HF2)
- Picking multisub material: 46 seconds (Corona 10 HF2)



Can you please tell me which resolutions you had in your 3ds Max when you recorded the video?

26

[Max] General Discussion / Re: Corona 10 - Corona Render Assets loading very slow

« on: 2023-10-30, 17:25:00 »

Hello,

I recently updated to Corona 10 HF2 for a project that required the implementation of some new features.
Today, I needed to perform a simple task: extract measurements from a basic Google Maps model, but it's nearly impossible due to the lags in Corona 10.

I have attached the scene for your reference, and you can experiment with it to measure the time it takes for opening and merging materials.
Currently, I don't have the time to test it with Corona 11 daily build.

Here are my "scores":

[3ds max 2022]-Corona 10 HF2
- Scene loading time:  9 minutes and 50 seconds
- Picking multisub material:  10 minutes


After selecting the materials, I have to wait an additional 10 minutes due to 3ds Max freezing.

I have tested this on:
- 3ds Max 2022 and 2024
- AMD Ryzen 9 5950X
- 64GB of RAM
- SSD

Scene Information:
- 450,000 polygons
- 1 object
- 1 multisub material with 694 3ds Max Physical materials
- 692 small textures

I hope this information helps.

27

[Max] Feature Requests / Re: Render Resolution per Camera

« on: 2023-10-30, 10:50:29 »

+1! Please

28

[Max] Bug Reporting / Re: Memory leak (Phoenix + Corona)

« on: 2023-10-26, 13:37:32 »

Hi,

Investigating this issue could take some time, it would be helpful if you could submit a support ticket. Please use the following link to do so: https://support.chaos.com/hc/en-us/requests/new

Additionally, please also attach your scene file and provide step-by-step instructions to reproduce the issue.

Looking forward to it.

Hi Avi,

thank you for the Information.
I have submitted the scene with ticket  #168251

Best Regards

29

[Max] Bug Reporting / Memory leak (Phoenix + Corona)

« on: 2023-10-23, 14:19:16 »

Hello corona team & forum users,

Recently, I created a relatively simple scene with Phoenix and Corona.
In this scene, I only created a fluid simulation with multiple sources that interact with each other, mixing the RGB channel.
Regardless of the output image resolution and even in IPR, after a certain number of frames, my PC runs out of RAM.
For rendering a single frame, the scene does not require much RAM, and even a PC with 32 GB can render it in 4K without any issues.
However, after each frame, the RAM usage gradually increases until I encounter a Phoenix error: "Out of memory during volumetric rendering initialization."
If I play the simulation without rendering, the RAM usage remains under control.

I've tested this on five different PCs, ranging from 32 to 128 GB of RAM, and encountered the same problem. Has anyone else had a similar experience?


I hope you can help me because it's really painful to debug and render the animation when I have to restart 3ds Max after every 15-30 frames.

Please take a look at my attachments:
1. `ram_statistic -4xspeed.mp4` - I've recorded a video showing how the RAM usage increases.
2. `ram_statistic-error when out of ram.jpg` - A screenshot of the Phoenix error message that appears when the system runs out of RAM.

My Software versions are:
3ds max 2022.3.8 (24.8 - 24.3.8.3531)
Phoenix 5.20.00 Build 20230706
Corona 10 HF2

Best regards

30

[Max] Bug Reporting / Re: CPU/thread performance drop with Corona Triplanar

« on: 2023-09-25, 10:53:38 »

Hello corona team,

I want to ask the same question as @alexyork did in my thread about chaos scatter:

Would the devs consider pretty clear bug fixes like this as something you can roll out into a Corona 10 hotfix? New features and tools certainly make total sense pushing into dailies, but if something's found to be a bug and doesn't conflict/require anything new from a daily/new core then it would be a huge benefit bringing it to the current version of Corona instead of having to push into dailies/full new version (which takes time to be released, tested, HF released etc.). It'll be a looong time before we're moving to Corona 11 final + HF, presumably, since C10's only just been released.

would it possible ?

Best regards