Two RTX A6000, nvlink : Link is supported: false

Graphics / Linux Linux
,
1

Hi, thank you very much for reading my question. As described I have bought two rtx a-6000 and a nvlink for it .

when i run : nvidia-smi nvlink -s I get :
GPU 0: RTX A6000 (UUID: GPU-d3b57ee6-598e-2610-1f98-c6d13b18b90e)
Link 0: 14.062 GB/s
Link 1: 14.062 GB/s
Link 2: 14.062 GB/s
Link 3: 14.062 GB/s
GPU 1: RTX A6000 (UUID: GPU-42356b66-6fcd-53d1-c599-ac25589fe33d)
Link 0: 14.062 GB/s
Link 1: 14.062 GB/s
Link 2: 14.062 GB/s
Link 3: 14.062 GB/s

and when I run nvidia-smi nvlink -c, I get
GPU 0: RTX A6000 (UUID: GPU-d3b57ee6-598e-2610-1f98-c6d13b18b90e)
Link 0, P2P is supported: true
Link 0, Access to system memory supported: true
Link 0, P2P atomics supported: true
Link 0, System memory atomics supported: true
Link 0, SLI is supported: true
Link 0, Link is supported: false
Link 1, P2P is supported: true
Link 1, Access to system memory supported: true
Link 1, P2P atomics supported: true
Link 1, System memory atomics supported: true
Link 1, SLI is supported: true
Link 1, Link is supported: false
Link 2, P2P is supported: true
Link 2, Access to system memory supported: true
Link 2, P2P atomics supported: true
Link 2, System memory atomics supported: true
Link 2, SLI is supported: true
Link 2, Link is supported: false
Link 3, P2P is supported: true
Link 3, Access to system memory supported: true
Link 3, P2P atomics supported: true
Link 3, System memory atomics supported: true
Link 3, SLI is supported: true
Link 3, Link is supported: false
GPU 1: RTX A6000 (UUID: GPU-42356b66-6fcd-53d1-c599-ac25589fe33d)
Link 0, P2P is supported: true
Link 0, Access to system memory supported: true
Link 0, P2P atomics supported: true
Link 0, System memory atomics supported: true
Link 0, SLI is supported: true
Link 0, Link is supported: false
Link 1, P2P is supported: true
Link 1, Access to system memory supported: true
Link 1, P2P atomics supported: true
Link 1, System memory atomics supported: true
Link 1, SLI is supported: true
Link 1, Link is supported: false
Link 2, P2P is supported: true
Link 2, Access to system memory supported: true
Link 2, P2P atomics supported: true
Link 2, System memory atomics supported: true
Link 2, SLI is supported: true
Link 2, Link is supported: false
Link 3, P2P is supported: true
Link 3, Access to system memory supported: true
Link 3, P2P atomics supported: true
Link 3, System memory atomics supported: true
Link 3, SLI is supported: true
Link 3, Link is supported: false

I am just curious why — Link is supported: false

thank you very much

2

I think that is only available on the Power 9 AI platforms, so shows always “false” on x86.

1 Like
3

Hi, Thank you very much for reply ! despite that false statement, does everything else show that nvlink is working normally and that I wouldnt need to manually download or install drivers or enable settings for it to work? sorry if its a dumb question, thank you

4

Values in the output are all correct for a A6000, nothing more involved.

1 Like