Reconfigurable Network Topology Controller for Latency Reduction
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Solution Overview
Problem
Network switches in distributed computational systems introduce latency, reducing communication efficiency and increasing computation time due to packet routing delays and congestion.
Innovation Solution
A topology controller dynamically selects and configures either direct or switched I/O links between computing nodes based on computational task requirements, using cross-point switches to reconfigure network topology and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network switches are used to route packets between computing nodes, then network connectivity and flexibility are improved, but latency increases and communication efficiency decreases
Solution Approach 1:
The patent implements dynamic topology reconfiguration where the network switches between direct I/O links and switched I/O links based on real-time computational task requirements. The topology controller dynamically selects optimal paths, allowing the system to adapt connectivity patterns without fixed routing, thus reducing latency while maintaining flexibility.
Solution Approach 2:
The patent segments network communication paths into direct I/O links (bypassing switches for low-latency communication) and switched I/O links (using network switches for flexible routing). This segmentation allows selective use of each path type depending on the computational task, resolving the contradiction between connectivity flexibility and latency.
2Loss of time
If direct I/O links are used between computing nodes, then latency is reduced and communication efficiency is improved, but network flexibility and adaptability decrease
Solution Approach 1:
The topology controller provides universal control over both direct and switched I/O links, enabling the system to perform multiple communication functions through a single control mechanism. This multi-functionality allows the system to select appropriate link types based on task requirements, maintaining both low latency and flexibility.
Solution Approach 2:
The system dynamically switches between direct and switched I/O links based on real-time computational task characteristics. The topology controller monitors task requirements and reconfigures active links accordingly, allowing the system to adapt its communication architecture without being locked into a single mode.
3Productivity
If network topology is dynamically reconfigured, then communication efficiency is improved and latency is reduced, but system complexity and control difficulty increase
Solution Approach 1:
The topology controller autonomously manages topology reconfiguration based on computational task requirements without requiring manual intervention. The system self-adjusts its network architecture by selecting optimal I/O link configurations, reducing the operational complexity burden on users while maintaining high communication efficiency.
Solution Approach 2:
The topology controller receives computational task information and uses this feedback to determine optimal topology configurations. This closed-loop control allows the system to adapt to changing workloads and maintain communication efficiency while managing complexity through intelligent decision-making based on real-time conditions.
Data Source
AI summary
At a topology controller, a method may: receive a topology request at the topology controller, based at least partially on the topology request, select an input-output (I/O) link connecting an input node to a destination node from a plurality of I/O links including at least: a direct I/O link between the input node and the destination node, and a switched I/O link between the input node and the destination node, and configure an active I/O link between the input node and the destination node based on the selected I/O link.