Why should all servers in a cluster run the same BIOS settings?
Why B is the answer
Differences cause uneven performance
Uniform nodes make tests and jobs predictable.
In detail
- Uniform nodes make tests and jobs predictable.
- Keep settings uniform.
Use case
An illustrative scenario, not a real incident.
One node runs a different BIOS setting, and its jobs are slower.
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 TD
Q{"Do all nodes match?"}
Q -->|"Yes"| A0["Predictable results"]
Q -->|"No"| A1["Uneven performance"]Key point: Uniform BIOS gives predictable nodes.
Why the other options are wrong
- A. GPUs will not fit in the chassis
- BIOS has no effect on fit.
- C. Slurm cannot start with any difference
- Slurm can start anyway.
- D. NCCL only runs on one BIOS vendor
- NCCL does not need one vendor.