Nov 19, 2018

CPU not using all threads V016


Hi all


I notice on my scene that sometimes .. not always .. when I render the nods render without using all core , this is very strange and is not happening all the time, is any way to set the core ?



Nov 20, 2018

Hi Zumpitu,


I think what you may be experiencing is something particular to blender's render engine. We use the cycles or blender internal engine in the background to render on your computers. So if you have set threads to automatic in the performance tab, then the render that will be done should be equivalent to using blender its self to render in background with those same settings.


It would be great if you could try something and let us know. Would you be able to test the same scene using blender alone and see if it has the same issue with your CPU cores not being pushed to 100%?



Nov 20, 2018

Hi James



I highly appreciate your reply thank you... I used Cycles for this render.


I tried to investigate about this and , I think,( but I'm not sure yet because I did not had the time to double check) that the reason was that on my normal Cycles setup I was using the GPU and turning it to CPU fixed the problem


or at least right now looks fine .


I will try to make the problem repeatable so is easier too see what happen


just for information I'm using to workstation dual Xenon with 24 core .


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