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Chaos Corona Forum
Chaos Corona for 3ds Max
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Topic: 64 threads limit (Read 3283 times)
2015-10-12, 20:58:28
SaY
Active Users
Posts: 72
64 threads limit
Right now if you try to render with a pair of e5-2699V3 (72 threads), corona would use only 50% of the CPU. It renders fine with HT off, but it means loosing 15-20% of speed.
Is it possible to make Corona to use more than 64 threads? Cinebench works fine with all 72 threads. Chaosgroup seems to have resolved the issue in the latest builds of Vray.
Thank you.
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2015-10-12, 21:22:12
Reply #1
romullus
Global Moderator
Active Users
Posts: 8844
Let's move this topic, shall we?
Re: 64 threads limit
There was discussion about this problem while ago. You may want to read this:
https://forum.corona-renderer.com/index.php/topic,5859.0.html
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2015-10-13, 16:19:59
Reply #2
SaY
Active Users
Posts: 72
Re: 64 threads limit
Thanks. Yes, I read that post. That's workaround, not a solution.
Also, running a second DR server on a render node won't work.
Latest Vray builds work with more than 64 threads, they fixed it since than.
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Last Edit: 2015-10-13, 16:36:16 by SaY
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2015-10-20, 20:50:29
Reply #3
Ondra
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Posts: 9048
Turning coffee to features since 2009
Re: 64 threads limit
Should be fixed in todays daily, can you give it a try?
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2015-10-28, 21:05:38
Reply #4
SaY
Active Users
Posts: 72
Re: 64 threads limit
Ondra, thanks for fixing it.
I installed 1.3 RC5 - works great so far. All 72 threads are at 100%
About 25% performance increase. My test scene gives me 20M rays/s, vs 15M with HT off.
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2015-10-28, 21:17:13
Reply #5
arqrenderz
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Re: 64 threads limit
can you share the test scene??
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2015-10-28, 21:21:53
Reply #6
SaY
Active Users
Posts: 72
Re: 64 threads limit
Sorry, I can't - client had me sign NDA. Its just a current work scene, not a dedicated test - if thats what you were asking.
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Last Edit: 2015-10-28, 21:43:32 by SaY
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Chaos Corona Forum
Chaos Corona for 3ds Max
[Max] Bug Reporting
[Max] Resolved Bugs
64 threads limit