IPR CPU threads number

[ulfmir]

Hello,
Is there a possibility to decrease the threads of CPU working on interactive rendering like in corona? Then the performance of viewport will be better.

Quote from Corona website:

"Render Setup > Performance > Performance Settings > Interactive rendering.
"# of threads override" is the number of cores to use for interactive renering. Positive values work in straightforward way. Value of 0 means that all system cores will be used. Negative values will use all cores but the number specified (-1 means all cores but 1)."

Best regards

[yavor.rubenov]

Hello,

By default IPR uses one thread less than the total number of threads available.
If you want to limit decrease even more - there is a MAXScript setting for the number of threads V-Ray should use when rendering:

renderers.current.system_numThreads=6

this will tell V-Ray to render with no more than 6 threads. Alternatively you can use the following:

renderers.current.system_numThreads=sysInfo.cpucount-2

this will tell V-Ray to use 2 threads less than the total number of threads.

However keep in mind that this setting is per scene and affects both IPR and production rendering. It's default value is 0 - then V-Ray will decide the correct number of threads.

Best regards,
Yavor

[ulfmir]

Thank you very much!

[clemens_at]

besides doing it with maxscript an input box in the settings/system tab would be greatly appreciated.