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Nvidia Tesla T4 GPU and ESXi 6.5
Hi Guys, I've recently installed a Nvidia Tesla T4 GPU in my server running ESXi 6.5. I've tried making a passthrough on all 32 addresses for the card on the list but when that happens and when I try to assign the card to a VM, the option the assign the PCI device is greyed out. I'e managed to to set a passthrough and make Active 1 address and than I was managed to assign this card to the VM. My question is: 1. Does this mean that only 1 GPU core is assigned to the VM out of a possible 32? 2. If so, any ideas how I'm able to assign all 32 cores of this card to the VM as when I try the option to add the PCI device to the VM is greyed out? Please advise. Kind Regards GMSS[.][/.]
Hi Guys,

I've recently installed a Nvidia Tesla T4 GPU in my server running ESXi 6.5.

I've tried making a passthrough on all 32 addresses for the card on the list but when that happens and when I try to assign the card to a VM, the option the assign the PCI device is greyed out.

I'e managed to to set a passthrough and make Active 1 address and than I was managed to assign this card to the VM.


My question is:

1. Does this mean that only 1 GPU core is assigned to the VM out of a possible 32?

2. If so, any ideas how I'm able to assign all 32 cores of this card to the VM as when I try the option to add the PCI device to the VM is greyed out?



Please advise.


Kind Regards

GMSS[.][/.]

#1
Posted 02/15/2020 12:25 AM   
First of all you should mention which host you are using. I assume there is something wrong with your BIOS as it seems you are seeing the SR-IOV virtual devices. You should change your BIOS to get a single T4 :) Regards Simon
First of all you should mention which host you are using. I assume there is something wrong with your BIOS as it seems you are seeing the SR-IOV virtual devices. You should change your BIOS to get a single T4 :)

Regards
Simon

#2
Posted 02/17/2020 12:08 PM   
Hi Simon, Many thanks for your reply and apologies for not stating the host. It's a Dell R620 running ESXi 6.5. Just so I understand, the reason why I'm seeing 32 addresses is because the SR-IOV in the BIOS is set to Disabled and hence it is enabling the Nvidia T4 to appear to have multiple physical PCI devices as oppose to just 1? Should I be changing the SR-IOV in the BIOS to Enabled in order to get just a single T4? Kind Regards GMSS
Hi Simon,

Many thanks for your reply and apologies for not stating the host. It's a Dell R620 running ESXi 6.5.

Just so I understand, the reason why I'm seeing 32 addresses is because the SR-IOV in the BIOS is set to Disabled and hence it is enabling the Nvidia T4 to appear to have multiple physical PCI devices as oppose to just 1?

Should I be changing the SR-IOV in the BIOS to Enabled in order to get just a single T4?


Kind Regards
GMSS

#3
Posted 02/17/2020 01:38 PM   
Correct! Please give it a try.
Correct! Please give it a try.

#4
Posted 02/18/2020 10:03 AM   
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