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[General] Rendering Speedup (3 Minutes per Step) |
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July 15, 2014, 14:05 |
Rendering Speedup (3 Minutes per Step)
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#1 |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Tussenhausen
Posts: 2,708
Blog Entries: 6
Rep Power: 51 |
Dear all,
I have just a very simple question to you. While rendering my actual project (multiphase ~ 2.000.000 cells, hexadominant from snappyHexMesh) one rendering step takes round about 3 minutes. I have 1200 steps to render. Therefor I should run my computer for 3600 minutes --> 60h. This time is "okay" if I will render it during weekend but I think this problem could be speed up in an very good way, isn't it? First some information My personal desktop pc:
My cluster:
At the moment I use paraview on my desktop PC and the rendering step take ~ 3 minutes. So is there a way to make it faster, any link, literature, hints are recommended. I think there are users that doing high rendering with PV. There should be a way to speed it up! ------------------------------------------------------------------------------------ Additionally:
Regards Tobi
__________________
Keep foaming, Tobias Holzmann |
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November 12, 2019, 02:56 |
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#2 |
New Member
Kyle Moon
Join Date: Apr 2019
Posts: 5
Rep Power: 7 |
Hi,
Did you manage to speed up your renders? I am sitting in a similar situation that volume renders take very long to load. |
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November 19, 2019, 10:43 |
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#3 |
Super Moderator
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,400
Rep Power: 47 |
With a "traditional" CPU rendering approach, there are usually two bottlenecks that can be reduced:
1) CPU processing time. Start Paraview in parallel on more than one core 2) I/O bottleneck. Paraview has to read the data for each new step from disk. Use faster storage, ideally NVMe SSDs or something with similar read speed. And of course, make sure there are no slow interconnects between the machine that runs Paraview, and the storage device. |
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November 20, 2019, 01:33 |
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#4 |
New Member
Kyle Moon
Join Date: Apr 2019
Posts: 5
Rep Power: 7 |
Thanks for the reply,
I have only just recently learnt about running paraview in parallel which is helping but it seems it will only run in parallel automaticity with certain data while a recomposed case will not, and a decomposed case has volume rendering problems on my Mac. It noticed the storage speed problems, unfortunately my mother board can’t take NVMe but I bought another SSD for my computer and more ram. So I hope it helps. |
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