Multi-GPU jobs fail right after a driver update. What is a likely cause?
Why A is the answer
A version mismatch in the stack
Driver, toolkit and Fabric Manager must be compatible.
In detail
- Driver, toolkit and Fabric Manager must be compatible.
- Update as a tested set.
Use case
An illustrative scenario, not a real incident.
Jobs fail right after a driver update, because the toolkit and Fabric Manager did not move with it.
See it in different ways
flowchart TD A["NVSwitch job fails"] --> B["Is the service running?"] B --> C["Does its version match the driver?"] C --> D["Read the Fabric Manager log"]
sequenceDiagram participant O as Operator participant S as Service status participant V as Driver version participant L as Log O->>S: Is it running? O->>V: Does it match the driver? O->>L: Reads the reason
mindmap
root(("GPU stack"))
n1["Compatible set"]
n2["Driver"]
n3["Toolkit"]
n4["Fabric Manager"]Key point: The stack must stay compatible.
Why the other options are wrong
- B. A full Slurm history table
- That is unrelated.
- C. A fan running too quietly
- That is unrelated.
- D. A stale NGC API key
- That only affects pulling images.