v2 daily builds - offline rendering faster than DR

[denisgo22]

With last DB from 4 2018 In addition to the problem of constantly updating IR---  I discovered for myself one more interesting problem/
Render process faster without DR !:)
After connecting for all my slaves, noise level starts to rise very quickly and practically in almost 10 times increases the rendering time, if at all it reaches the necessary parameters in approximately the time when the render was completed on one machine:)
maybe someone else has faced the same problem?

[maru]

Does it work fine with pass and time limits?

[draxdamax]

Hi

I also have some issues - in my case with the latest DB 08.01.
There is clearly a problem somewhere , at least with the noise reporting if not with the DR entirely.

I've attached a small test with/without DR.

The scene was built with DB 08.12 and the master is an I7 with slave a dual xeon E5 - V1 if it matters.

[maru]

Same question :)
Does it work fine with pass and time limits?
 

[denisgo22]

Same question :)
Does it work fine with pass and time limits?

\1.If render only on workstation with 3% noise limit- i get this 3% in 200 passes of render time/
2.If i set 200 passes and use DR /without noise limit, only passes/ with same picture i get 15% noise level in the end of render in VFB/:))
\judge for yourself:))
seems to me that using DR noise level generally does not fall below 14% never/
DB-- 8 /2018
With time option i am not testing because--i think yet everything is clear:)
-----------------------------------

[maru]

Here are my tests and conclusions:

1.7 local render with nose limit set to 5 - 75 passes, 6:56 - OK
1.7 DR with noise limit set to 5 - 88 passes, 4:15 - OK

v2 DR with noise limit set to 5 - 198+ passes, 10:34+ - NOT OK (stopped manually, reported noise level was over 20, though the image quality was already much better than in previous examples)
v2 DR with pass limit set to 75 - noise level 21, 4:17 - KIND OF OK (pretty much consistent with 1.7, except for the crazy noise level value)
v2 DR with time limit set to 4:15 - 72 passes, noise level 12,65 - KIND OF OK (pretty much consistent with 1.7, strange reported noise level again)

Update: https://forum.corona-renderer.com/index.php?topic=18802.msg118500#msg118500

[denisgo22]

Here are my tests and conclusions:

1.7 local render with nose limit set to 5 - 75 passes, 6:56 - OK
1.7 DR with noise limit set to 5 - 88 passes, 4:15 - OK

v2 DR with noise limit set to 5 - 198+ passes, 10:34+ - NOT OK (stopped manually, reported noise level was over 20, though the image quality was already much better than in previous examples)
v2 DR with pass limit set to 75 - noise level 21, 4:17 - KIND OF OK (pretty much consistent with 1.7, except for the crazy noise level value)
v2 DR with time limit set to 4:15 - 72 passes, noise level 12,65 - KIND OF OK (pretty much consistent with 1.7, strange reported noise level again)

So which conclusion?
Not correct noise report with DR render?
And quality is OK?

[TomG]

So which conclusion?
Not correct noise report with DR render?
And quality is OK?

Looking at Marcin's results, that's how it would seem to me - the rendering is ok, but the noise level reporting is incorrect with DR, giving a higher value than it should, so it continues rendering even when it has hit the needed quality, as the noise level still shows as too high.

[maru]

Yes, the conclusion is that the noise level reporting seems to be broken when using DR. Sorry I forgot to add that. :)
Anyway, this is reported directly to the dev team, so we can expect a fix soon.

Update: https://forum.corona-renderer.com/index.php?topic=18802.msg118500#msg118500

[denisgo22]

Yes, the conclusion is that the noise level reporting seems to be broken when using DR. Sorry I forgot to add that. :)
Anyway, this is reported directly to the dev team, so we can expect a fix soon.

Thanks a lot:)

[iancamarillo]

so just to make sure, this error is NOT happening in 1.7 hotfix 2 right? Thanks

[Frood]

Right, only current daily is affected.


Good Luck

[iancamarillo]

ok thx

[maru]

Guys, sorry for the confusion. It seems that my tests were not very reliable (and I did not even test v2 with no DR).
The explanation is that version 2 is using a "different unit" to report the noise level (you can see it as a different scale). This is because it is supposed to make the noise level more consistent with what was reported in Corona 1.6.

So the noise level is reported correctly, it is just using a different unit (or scale) for this.

We will of course double check whether DR is definitely working fine in the daily builds.

[PROH]

@maru - you just made me much more confused..... Could you please explain this with some noise % examples - and maybe some renders?