Which command shows how GPUs and NICs connect inside a node?
Why D is the answer
nvidia-smi topo -m
The topology matrix shows paths between devices.
In detail
- The topology matrix shows paths between devices.
- It helps with affinity.
Use case
An illustrative scenario, not a real incident.
A team reads the topology matrix to see how GPUs and NICs connect.
See it in different ways
sequenceDiagram participant F as Facility participant B as BMC participant W as Firmware participant O as OS and drivers F->>B: Power and network B->>W: Update through out-of-band access W->>O: Install the OS and drivers O->>O: Confirm GPUs, then run diagnostics
flowchart LR S0["Run the command"] --> S1["Read the matrix"] --> S2["Plan affinity"]
Key point: nvidia-smi topo -m shows paths.
Why the other options are wrong
- A. df -h
- That shows disks.
- B. sinfo --Node --long
- That shows Slurm nodes.
- C. ibping
- That tests connectivity.