Author Topic: Is 1.6 slower than 1.5 ?  (Read 10510 times)

2017-04-27, 05:08:22

Grisha_J

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Hello guys,
Spent a few hours testing a new 1.6 and noticed that the new version is a few percents slower than 1.5.
Render time in 1.5 was 33 min (100 passes), but render time of the same scene in 1.6 was surprisingly higher - 39 min (100 passes)!
The interior scene contains corona scene environment (solid color) plus corona sun - no hdri.
Thank you.
« Last Edit: 2017-04-27, 05:17:23 by Grisha_J »

2017-04-27, 08:09:01
Reply #1

bluebox

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And have you compared the noise level after those 100 passes in both cases ?

2017-04-27, 08:09:43
Reply #2

Ryuu

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Hi, there have feen few changes which might lower the brute force performance (meaning more time per single pass) but should overall cause the image to clean up faster. So you should need fewer passes to achieve the same quality.

Could you perhaps try rendering with a set target noise level instead of pass count to see if that's still slower?

2017-04-27, 15:31:13
Reply #3

Grisha_J

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The noise level is an issue as well.
In 1.5 was 3.0, in 1.6 was 3.13 - visually the picture in 1.6 was slightly noisier in comparison to 1.5.
Additionally I forgot to mention in my last message - the 3d scene contains a few equal ies lights in order to illuminate the room.

2017-04-27, 17:04:53
Reply #4

Ryuu

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Could you please send us the scene for testing? If you don't want to share the scene publicly, you can use the private uploader from my signature.

2017-04-28, 22:36:04
Reply #5

Grisha_J

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Alright guys - it's done:
Successfully uploaded as 1493410662_CoronaTest.rar
I uploaded a different scene - but the situation is absolutely the same.
My home i7 6700k does it in:
V1.5 - 52 min.
V1.6 - 59 min.
The noise level is approximately the same, but the render time difference is more than 12%!
I look forward to hearing from you guys.
Thank you.

2017-04-29, 17:32:29
Reply #6

cecofuli

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From my test, 1.6 is slower, but not so much.
In the link, you can download the SCENE and the CESSENTIAL Render Elements.
For the same amount of time (15 minutes) I have:


1.5.2

Rays/s= 1.938.000
noise level= 5.7
Passes= 72

1.6
Rays/s= 1.820.000
noise level= 5.99
Passes= 67

--- DOWNLOAD ---




« Last Edit: 2017-04-29, 18:35:12 by cecofuli »

2017-04-30, 19:06:28
Reply #7

Grisha_J

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Thank you for input Francesco - let's wait developer's response.

2017-05-04, 03:32:31
Reply #8

Grisha_J

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Is there any progress with my question and 3d scene? Will the speed issue be fixed in the future?

2017-05-04, 09:30:42
Reply #9

Ryuu

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Thanks for the scene and for the measurement. I haven't had yet the time to compare the performance myself unfortunately. We have multiple optimizations scheduled for 1.7 so this will definitely be addressed.

2017-05-04, 10:08:15
Reply #10

jjaz82

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i noticed same issue, a little slow, same passes but a little bit noisy.

2017-05-08, 12:42:43
Reply #11

Flavius

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Yes, clearly 1.6 is more noisier,  I haven't tested it properly (busy) but it feels noisier, also in the IR which also seems to be a bit less responsive compared to 1.5.

2017-05-09, 16:50:29
Reply #12

Grisha_J

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Yes, clearly 1.6 is more noisier,  I haven't tested it properly (busy) but it feels noisier, also in the IR which also seems to be a bit less responsive compared to 1.5.
I agree - IR in 1.5 is more responsive and comfortable.

2017-05-09, 20:45:15
Reply #13

Ondra

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that is weird, as it goes directly against experience of other users. What is your system specs? Does it happen in all scenes?
Rendering is magic.How to get minidumps for crashed/frozen 3ds Max | Sorry for short replies, brief responses = more time to develop Corona ;)

2017-05-10, 09:39:59
Reply #14

DarcTheo

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Yes, clearly 1.6 is more noisier,  I haven't tested it properly (busy) but it feels noisier, also in the IR which also seems to be a bit less responsive compared to 1.5.
I agree - IR in 1.5 is more responsive and comfortable.

1.6 IR is amazing for me, I can do so much more now. in 1.5 it was very hard to use IR sometimes but in 1.6 it is a lot easier to not crash the PC while working with it.