This may be a bit off topic for this forum. I have a macpro with 12 cores and 24 total cores including virtual cores. Running Windows 8.1. VRay is currently just seeing just “12 cores.”
Funny thing is when I was using windows 7 VRay was seeing all 24 cores.
Task Manager sees just 12 cores. It sees one of the two sockets.
Device Manager sees all 24 cores.
I contacted Chaos Group and they were unable to pinpoint the issue.
Hi. Check to see if Windows is limiting your number of allowed CPU processors. I had this problem with Windows 7 on my i73770 which has 4 cores with 8x threads and only 4 x threads were being used and seen by Vray and Windows.
To unlock all available cores in Windows 7 (And I assume Win8) try this:
Press WINDOWS KEY + R
Type:
msconfig
Goto the BOOT tab
Click on Advanced options button
Un-Tick the NUMBER OF PROCESSORS option.
Apply and close and reboot your system
My Windows 7 system was set to limit usable CPUs to 4, which actually means 4 x threads, not physical CPUs. With this change my Vray and Windows have been able to use all 8x threads on my system. Michael VS