NCP-AII Question 37
Select 3You are configuring routing tables for an AI training cluster that uses NVIDIA Spectrum-X™ and InfiniBand to optimize performance. The cluster needs to ensure low-latency communication between compute nodes while minimizing bottlenecks. Which steps are necessary to properly configure the routing tables for this setup?
- A
Define the topology of the InfiniBand fabric, including the links between switches and compute nodes.
- B
Enable Equal-Cost Multi-Path (ECMP) routing on the Spectrum-X™ switches to distribute traffic evenly.
- C
Manually assign IP addresses to each compute node within the routing table.
- D
Use NVIDIA UFM (Unified Fabric Manager) or similar tools to validate and optimize the routing configuration.
- E
Disable adaptive routing on InfiniBand to maintain static paths for traffic consistency.
Show answer and explanation
Correct answers: A, B, D
Explanation
Proper routing table configuration in an NVIDIA Spectrum-X™ and InfiniBand environment requires understanding the fabric topology, enabling traffic distribution features like ECMP, and leveraging tools like NVIDIA UFM for validation and optimization. These steps ensure low-latency, high-performance communication between compute nodes while avoiding bottlenecks. Manually assigning IP addresses is unnecessary in an InfiniBand setup, and adaptive routing should remain enabled for dynamic optimization.
- A. Correct.
Defining the topology of the InfiniBand fabric is essential for the routing table to understand the interconnection of devices and optimize routing paths.
- B. Correct.
Enabling ECMP routing on NVIDIA Spectrum-X™ switches ensures that traffic is evenly distributed across multiple links, reducing congestion and improving performance.
- C. Incorrect.
Manually assigning IP addresses is not required for routing table configuration in an InfiniBand setup, as InfiniBand uses GUIDs (Globally Unique Identifiers) for addressing.
- D. Correct.
Using NVIDIA UFM or similar tools helps validate the routing configuration, detect potential issues, and optimize performance automatically.
- E. Incorrect.
Disabling adaptive routing is not recommended as it would restrict the system's ability to dynamically adjust traffic paths to avoid congestion.