Network Topology Detection in Multi-Node Computing Systems
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Solution Overview
Problem
In multi-node computing systems, determining and maintaining an accurate network topology is complex due to dynamic changes such as node additions, removals, and connection failures, especially as the number of nodes increases, requiring a method that is both fast and efficient.
Innovation Solution
Each compute node detects connections with neighboring nodes, generates and sends topology packets with updated connection data, and maintains a local topology change indicator to ensure the propagation of current topology information, allowing nodes to update and share topology tables efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional topology detection methods are used in multi-node systems, then topology information can be obtained, but the complexity and time required increase significantly as the number of nodes increases
Solution Approach 1:
The patent divides the topology detection process into individual node-level operations. Each node independently detects its own connections and generates topology packets, rather than requiring a centralized detection mechanism. This segmentation reduces overall system complexity while maintaining accurate topology information across all nodes.
Solution Approach 2:
Each compute node autonomously detects its connections, generates topology packets, and updates its own topology table without requiring external assistance. Nodes independently monitor connection changes and propagate topology information themselves, eliminating the need for complex centralized management and reducing detection complexity.
2Reliability
If frequent topology updates are performed to maintain accuracy, then current topology information is maintained, but system overhead and processing time increase
Solution Approach 1:
The patent implements event-driven periodic updates where topology packets are generated and propagated only when connection changes are detected at individual nodes. This approach maintains current topology information by updating only when necessary, rather than performing continuous or overly frequent updates, thus reducing time overhead while ensuring reliability.
Solution Approach 2:
Each node monitors its own connection status and provides feedback by generating topology packets only when changes occur. This feedback mechanism ensures topology information remains current by triggering updates based on actual connection state changes, avoiding unnecessary updates and reducing processing time.
3Measurement precision
If comprehensive topology monitoring is implemented across all nodes, then accurate network topology is achieved, but communication overhead and processing load increase
Solution Approach 1:
The patent implements partial action by having each node generate and propagate topology packets only when connection changes are detected at that specific node. Rather than all nodes continuously generating and processing topology packets, each node performs the action partially and only when necessary, reducing overall processing energy consumption while maintaining comprehensive topology accuracy through distributed propagation.
Data Source
AI summary
A method allows each individual node in the multi-node computing system to detect the topology of the computing system. Each individual node detects its own connections with neighboring nodes directly connected to the individual node, and sends out a topology packet on all of its interfaces with a local topology change indicator that increments with each topology packet sent out. Each individual node stores their own topology table with an entry for each node from which it has received a topology packet, including the local topology change number which enables the node to determine whether a received topology packet is more recent than data already stored in the topology table. Each node updates its topology table with new topology data, forwards new topology data, and sends back acknowledgements to a source node only upon receiving acknowledgements from all other nodes.