Taichy X399 VM GPUs

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   Hello!

I have AsRock Taichy X399 with CPU Threadripper 1900X and four GPUs Sapphire Radeon RX Vega 64 Liquid. I installed XCP-NG and enabled in BIOS SVM-mode and SR-IOU mode.
After install Windows 10 like a virtual machine, I see only three cards.

Is problem in the motherboard?
Should I update the BIOS?

Thank you for advices.

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thomas01 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Feb 2019 Status: Offline Points: 3	Post Options Post Reply Quote thomas01 Report Post Thanks(0) Quote Reply Topic: Taichy X399 VM GPUs Posted: 24 Feb 2019 at 5:16pm
	Hello! I have AsRock Taichy X399 with CPU Threadripper 1900X and four GPUs Sapphire Radeon RX Vega 64 Liquid. I installed XCP-NG and enabled in BIOS SVM-mode and SR-IOU mode. After install Windows 10 like a virtual machine, I see only three cards. Is problem in the motherboard? Should I update the BIOS? Thank you for advices.

xhue Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 17 Aug 2018 Status: Offline Points: 634	Post Options Post Reply Quote xhue Report Post Thanks(0) Quote Reply Posted: 24 Feb 2019 at 6:48pm
	Are you sure one of the GPU is not reserved for the hypervisor or another VM? I'm also curious if you used IOMMU and how did you manage the groupings. Oh, how many M.2 SSD are you using? P.S. BIOS update is higly recommended, with a good CMOS clear afterwards.