low thread priority on render server

V-Ray V-Ray for 3ds Max General
1

Is there any way to start spawner and 3ds max on render server with low thread priority?
Any command line parameter or environment variable or something?

2

Low Thread Priority option works only for the workstation machine.
You can Set Affinity for VraySpawner from Windows Task Manager for that purpose.

This topic has been discussed also here:
http://forums.chaosgroup.com/showthread.php?76918-Distributed-Rendering-Questions-script-to-turn-spawner-on-processor-affinity&highlight=set+affinity+spawner

3

This is good to know. I’d been checking off low priority recently for DR jobs thinking it would ease the cpu usage in DR.

4

Would be cool to have an option for that int he render dialog though :slight_smile:

5

if you start spawner through a .cmd file you can declare a command -belownormal this will run any process in below normal state so you dont have to change it in taskmanager everytime.

6

There is environment variable “VRAY_NUM_THREADS” for V-ray for Maya.
Is this variable working with max V-ray?

7

Yes - this variable works in V-Ray for 3DSMax as well.
Please note that this variable will set how many threads will be used by V-Ray during the rendering which is not the same thing as low thread priority.

8

You can put a small scrupt in plugins folder (on each machine or on network for everyone) with that :

sysInfo.MAXPriority = #low

9

thanks for answers

I know but this is very usefull too..

I searched internet and found that this script should be named “priority.ms” and should be placed in scripts/startup folder.
http://area.autodesk.com/blogs/ken/how\_to\_change\_the\_rendering\_priority\_of\_3ds\_max
Anyway - thanks for suggestions…

10

You don’t have to name it like that, or place it in a particular folder, just a folder that load scripts at startup. You can even put this line of code anywhere in any other startup script.