Which topology is the classic choice for InfiniBand clusters?
Why B is the answer
Fat tree
Fat trees provide high bisection bandwidth.
In detail
- Fat trees provide high bisection bandwidth.
- It is the classic choice.
Use case
An illustrative scenario, not a real incident.
A cluster uses a fat tree, for high bisection bandwidth.
See it in different ways
mindmap
root((InfiniBand))
Control
Subnet manager
Traffic
Service levels
Virtual lanes
Adaptive routing
Performance
SHARP
Fat tree
Management
UFMflowchart LR S0["Servers"] --> S1["Leaf switches"] --> S2["Spine switches"]
Key point: Fat trees give bisection bandwidth.
Why the other options are wrong
- A. Daisy chain
- A chain adds hops.
- C. Single ring
- One ring is limited.
- D. Star of hubs
- Hubs are limited.