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Messages - Evolist_ua

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31
Guys, this bug with dual-processor systems and textures, which I wrote about in this thread (https://forum.corona-renderer.com/index.php?topic=24238.0), is still there(((

34
Hi guys, how's the progress with my problem?

35
Hi, sorry for so long, there was no free time((
For explanations I used google translator, I hope you will understand me)

36
We mostly use 8-core processors, so it's possible that it's an issue relevant to dual-core CPUs.

Edit: My bad, you said dual processor... That's more interesting then. Unfortunately I don't know what could be the cause. It might quite possibly be an inherent feature of the system.

Yes, it is a system with 2 processors that would show two CPU-Z in the first screens

But in 3d max + corona Ok, corona render benchmark ok too.

It turns out that the corona bitmap works like a “crutch”, somehow forcing a bunch of 2 processors to work + a crown + texture in another way.

If I set a limit on rendering in threads in the settings of the Cinema, let's say the number of threads per processor, in my case it is 40 threads, then everything is fine, the situation is the same as with systems on one processor. But if you set 41 threads (40 threads of the first processor, and 1 thread of the second), then the situation described above begins((

I will try to make a screen recording soon so that you understand me better)

37
Developers?
Hi, I just tried to replicate your (bitmap vs no bitmap) scene as best I could and have to say that my results were almost the same. To make it a fair comparison on our end could you upload your test scene for us to check? If so, the upload link is in my signature below. Thanks.

Do you also use a dual-processor system?

I see no reason to do test scenes, as this is a constant problem. The more textures added through the corona bitmap, the higher the render speed (almost "linear" dependence of the speed increase), let's say 100% of all the textures through the corona bitmap, which means 100% speed if there is 50% of the textures through the Corona bitmap, hence the speed will be 50%

It is necessary to check on other systems with two processors, with a different architecture. My processors are Broadwell-EP, I also checked with my friend, who also has processors on Broadwell-EP architecture, he has the same problem. Maybe on older or newer processors (Dual processor configurations) there will not be such a problem

38
Quote from: houska
Hi everyone,

sorry for taking so long to respond.

There's a lot of issues reported in this ticket. If I understand this correctly:
  • C4D bitmap being slow to render
  • Corona bitmap's texture projection not working under projector or layer shader
  • Bump inconsistency between C4D and Corona bitmaps
  • Texture bluring with a lot of Corona bitmaps (what does this mean?)
  • Slow and buggy material editor (We need more specific information here.)

Numbers 1 and 2 are new to us, we'll need to do our own tests to determine the cause and possibly fix these bugs.
Number 3 seems like a minor issue to me. Just use the setting that produces the best result. Actually, the images seem pretty similar.
Numbers 4 and 5 need more information.

In general, I'd suggest to use C4D native bitmap for now. Corona bitmap needs some more attention from us for now.

Hi, thank you for responding

1) Yes, if I use just the texture then the speed is bad, if I put it in the corona bitmap then everything is fine (like this)

But this is only on dual-processor systems, on a system with one CPU, everything is OK!

2) Corona bitmap works in the projector and in layers, but does not respond to texture transformations (tiling / scale / size)

3) Yes

4) This is a rather rare, "random" , but problem
let's say ok here



and when a large scene with a large number of corona bitmap begins to become like this (the level of blurring can be different, from a slight blur, to a full one, where only the color is visible)



5) Let Gr100 describe this mistake, I didn’t notice it.


Quote
Number 3 seems like a minor issue to me. Just use the setting that produces the best result. Actually, the images seem pretty similar.

Well, using the corona bitmap in the bump, I lose the quality of the bump (noticeably on the fabrics, especially if you need a good picture), and if you don’t use the bitmap crown, the rendering speed drops(

Quote
In general, I'd suggest to use C4D native bitmap for now. Corona bitmap needs some more attention from us for now.

Not using corona bitmap is very bad for rendering speed on systems with 2 CPUs

39
Developers?

40
Hi,
For a long time in the Corona for cinema there is a problem that is not present in the version for 3d max. (In Corona Render Benchmark and 3D Max are OK)

I use a dual-processor configuration with two intel xeon e5-2698v4 es

If you just add textures (just one texture in diffusion, gloss, bump), then we have this (LOOK AT THE NUMBER OF RAYS) It is low!


But if you use Corona Bitmap with textures, then with speed everything is fine (again we look at the number of rays)


But .... The Corona Bitmap does not respond to changes in size, scale, turns through transformations in a layers or in a projector



Also the bump does not respond well to the Corona Bitmap

Just texture


Texture with Corona Bitmap


And if you use a lot of Corona Bitmap, then the textures start to blur very much

Please help me, as it takes a lot of time to assign a Corona Bitmap to the textures, and if you don't assign it, it takes a lot more time to render (several times), thank.

41
[C4D] General Discussion / Re: Licence Question
« on: 2019-02-21, 13:12:23 »
Hi, is there a free version planned (If yes, then with what restrictions)? When installing any version (Corona Renderer 3 (hotfix 1), previous beta builds or Corona Render 4 Daily Builds ) displays the final license date 02/22/2019 (that is, tomorrow).

42
[C4D] Resolved Bugs / Dual cpu speed problems
« on: 2018-05-20, 23:02:59 »
Hi all, I have two CPUs - Intel xeon e5-2698v4 es (each has 20 cores \ 40 threads) on the motherboard asus z10pe-d16ws.

In the corona render benchmark, v-ray test, cinebench r15, everything is fine, the results are as they should be, in 3dmax18 + corona render too all ok.

In c4d I manually set how many threads are used for rendering, and as soon as I begin to use the threads of the second processor (in the settings 41 threads , which is 40 threads of the first processor, and 1 thread of the second processor) starts rendering speed gets worse, and the more threads of the second processor are used, the rendering speed becomes worse.

After spending about a month looking for the source of the problem, I noticed that you need to load all the textures through the corona bitmap (it turns out like a "crutch"?), Then with the speed all ok ... But the corona bitmap does not respond to the transformation (scale, rotation) through the projector or the layer

43
[C4D] General Discussion / Re: Team Render working now?
« on: 2017-11-14, 18:10:32 »
Hi, we are all users of the c4d. We are very much looking forward to the team render, Trello states that you plan to release it at the end of the year. Is it likely that you will release it at the end of 2017, and will not transfer it to 2018?

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