Author Topic: Extremely wrong rendering times  (Read 2626 times)

2018-04-18, 02:45:11

vertexhardcore

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Hello Guys, I need some help.

I recently bought one Dual Xeon System, I just ran some test on the scenes and all were very good, I got good cinebench of  2672. It rendered corona benchmark scene in 2Min 17Secs.

But When I tried to render my scene, in both system, One Existing and one dual Xeon, then results are very scaring. Please help me out. There is something wrong and I can't figure out what?!

I am using the same scene in both, Both are picking files out of NAS and there is no change at all in the scene.

Dual Xeon is firing around 1,000,000 to 1,500,000 Max while my i7-5820K is firing 2,200,000 to 2,500,000.

My Xeons are Silver 4114. A Fresh Build.

32GB of Ram in both and it is not bottlenecking.

Please help me to get out of this hell.

Thankyou.

2018-04-18, 08:50:35
Reply #1

diffuus

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You are talking about "very good" tests, but I think 2min 17secs for the Corona benchmark is not a good result for you system.
The benchmark is running outside your Corona/Max/C4D installation, so I think you should look at system level. Are there other processes going on that are stressing the CPU?

2018-04-18, 09:03:27
Reply #2

vertexhardcore

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Sorry Man, I just missed something, Actual Corona Benchmark result is 1Min and 17Secs, Not 2 Minute something. You can check here, See for 20C 40T https://corona-renderer.com/benchmark/cpu/4114/all.

2018-04-19, 14:24:36
Reply #3

vertexhardcore

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It was just benchmark issue, Problem isn't solved yet. My Xeons are beast but they are not able to throw rays in this scene only while it throws great in other scene but My scene is just rendering fine in 5820K which are 6 Cores and giving me double rays. But xeons are firing half of that. Help me, guys!!!!!!!. Is no one here who can help me troubleshoot it? Hah?

2018-04-19, 17:35:44
Reply #4

Fluss

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Are you using a HDRI ? If yes, is it loaded from a max standard bitmap or from a corona Bitmap ?

2018-04-19, 17:58:31
Reply #5

maru

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Is this 3ds Max or C4D?

Ideas:
1) As Fluss mentioned - converting ALL bitmaps to Corona Bitmap or 3ds Max bitmap and checking which one performs better (this can be done using the converter script)
2) Is there a chance you have some 3ds Max standard or photometric lights in your scene? They are known to fuck things up.
3) Try with the newest version of Corona instead of 1.6. You can check with 1.7 hf4 - https://corona-renderer.com/download/ or with our newest dailies: https://coronarenderer.freshdesk.com/support/solutions/articles/5000570015

If those don't help, can you please contact us about your issue at support@corona-renderer.com ? We will need any scene where the slowdown can be observed: https://corona-renderer.com/upload
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2018-04-20, 02:12:04
Reply #6

vertexhardcore

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Thank you, friends,

I don't see any logic here but I used one model from evermotion which had some photometric lights, Even though it was turned off it was causing the issue in only one beast machine, I deleted that and Now my scene is firing 9,000,000 Rays which are holy awesome. Thanks!

2018-04-20, 14:12:37
Reply #7

romullus

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That's odd, turned off light shouldn't affect rendering speed in any way, if it does, then it should be considered as a bug. Could you share problematic scene with the team through private uploader, so they could investigate and possibly fix the bug?
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