OTOY Forums

Hello,

I have a 4 nos display, 1 no. is Quadro k4000 for main display and 3 nos. Geforce GTX Titan cuda calculation.

When I installed the 4 nos. display, there have a problem to use cuda for Octance render, but there are no problem, when I installed 2 nos. Titan + k4000, or 3 nos Titan. Why?
And the motherboard & driver is detected all card, I try to change the K4000 to other pci-e slot, but same case.

my computer configure
- gigabyte x79-up4
- i7 4930 oc 4G
- 16g ram
- 1200w psu

Driver Quadro 332.21 & Geforce 332.21

Please help me to find the solution, thank you!

I have a gigabyte x79 board and had some issues with multiple gpu. Perhaps your issue is similar.
Try changing the BIOS features/PCI ROM priority to Legacy ROM and see if that helps.

thank you for you reply, I found the problem on the nv driver, not use the latest driver. I changed to use 320.49 driver is ok.