Topics

1

[Max] Resolved Bugs / Interactive render issue.

« on: 2022-11-21, 09:42:36 »

Hello,

I noticed an annoying bug for my workflow when using interactive rendering on the corona frame buffer.

I'm using 2x 4K monitors, and they are scaled to 150% on Windows, because if not, the texts, icons, etc. they are unreadable.

The problem here is that the maximum resolution for my frameBuffer when is maximized is influenced by that 150% scale, and that's a big mistake.

When my scale is 100%, the IR resolution of my frameBuffer when is maximized is 2187 x 1546, but when they are scaled to 150% (remember, they are only scaled on text, icos, etc.) my resolution drops to 1423 x 1006... And the big problem is when FB scales an "small img" and is trying to scale it to fit the 4K resolution. So it is like double error, cos I am not only loosing resolution, I'm losing definition too. And if you add the "noisy" component when it's in interactive rendering, the original problem is even bigger, because its feedback isn't proper when I'm trying to make subtle changes to the materials.

Could you make the interactive rendering of frameBuffer independent of %Scale resolution on Windows? Cos if not, is useless working on 4k monitor nowdays.

2

[Max] Bug Reporting / dual CPU issues?

« on: 2021-07-31, 22:11:32 »

Hello,

I answer a C4D post cos I have similar issue than an user posted, but I have not noticed the post was in c4d forum, and my issue is at 3dsmax.
Im going to open new threat here:

I have 2 computers one with Asus z10pe-d16 ws motherboard with 2x e5-2696v4 (88 threats). And my other computer is a e5-2678v3 (24 threats)

At several benchmarks, the dual system is more than 3 times powerfull than the single cpu computer (cinebenchR15, cinebenchR20, cinebenchR23, coronabenchmark 1.3...)

But when I'm rendering with corona DR (3dsmax 2021.3 and corona 6.2), dual system makes only 1.1~1.2 times more passes than the single cpu system... How it can be possible?
At first time, I though I had LAN issues, but doesn't matter wich computer is slaving or is the main. The result is the same. Also, if I put the same scene at the same time in each computer to render. Dual system is only 1.1~1.2 faster than the single one... So, what is going on?!

When dual system is rendering, 88 threats are full load (100%) all the time without any drop... So I guess corona is not handling properly dual CPUs computers. I guess, corona is rendering with both CPUs in "PARALLEL" instead of in "SERIAL" (adding passes). Cos something is missing or failing at corona programing code... And that makes sense why if I deactivate one cpu in the dual system, the performance rise a bit... Cos again, is just a guess, I think both cpus are fighting to render the same pass at same time, reading the same info at RAM at same time. But at the end, only 1 CPU passes are counting...

I made some test with vray also, and results are more or less expected (dual system renders 3 times more buckets than single cpu system)

So, anyone can send some light to this problem?