Optical Switch Control Method for Reducing Link Re-establishment Time Overhead
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Solution Overview
Problem
The existing optical switch systems in computer systems using all-optical switching networks face significant time overheads during link re-establishment, which severely impact access performance and application running performance due to the need for optical-to-electrical and electrical-to-optical signal conversions, limiting the scalability and bandwidth of memory systems.
Innovation Solution
An optical switch control method and apparatus that predicts and anticipates memory node access patterns by analyzing access features and priority indications, allowing for advance establishment of optical links between computation and memory nodes, thereby reducing the time delay associated with link re-establishment by determining whether to allow the establishment of new optical links based on conflict and priority information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical link re-establishment is performed using conventional optical switching, then the system can dynamically route data traffic, but significant time overheads are introduced due to optical-to-electrical and electrical-to-optical signal conversions
Solution Approach 1:
The patent applies preliminary action by predicting future memory node access patterns and pre-establishing optical links before actual data transmission occurs. The system analyzes access features and priority indications to anticipate which links will be needed and establishes them in advance, eliminating the need for time-consuming optical-to-electrical conversions during link re-establishment operations.
2Adaptability or versatility
If optical link switching is performed to change memory node connections, then the system can adapt to changing data access requirements, but large time overheads are introduced that severely impact access performance
Solution Approach 1:
The system performs preliminary analysis of access patterns and pre-establishes optical links before actual data access operations. By predicting which memory nodes will be accessed and setting up the corresponding optical paths in advance, the system eliminates the need for slow optical-to-electrical conversions during link switching, thereby maintaining high access performance while adapting to changing data access requirements.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors and analyzes access features, priority indications, and actual data access patterns. This feedback information is used to refine predictions and optimize link establishment decisions, ensuring that the most critical links are pre-established while avoiding unnecessary link switching operations that would consume time.
3Device complexity
If conventional optical switching is used without prediction mechanisms, then the system structure remains simple, but scalability and bandwidth of the memory system are limited
Solution Approach 1:
The patent introduces preliminary action through prediction mechanisms that analyze access patterns and pre-establish optical links before data transmission. This allows the system to handle larger and more complex memory systems without proportionally increasing switching complexity, as the prediction algorithms proactively manage link establishment rather than reacting to each data access request individually.
Data Source
AI summary
An optical switch control method and an apparatus are disclosed, to reduce impact on access performance by time overheads of optical link switching. The method includes: receiving an optical link establishment request sent by a computation node; determining whether the first optical link that needs to be established conflicts with the existing optical link; and if the first optical link that needs to be established conflicts with the existing optical link, determining whether to allow establishment of the first optical link, and establishing the first optical link if the establishment of the first optical link is allowed; or establishing the first optical link if the first optical link that needs to be established does not conflict with the existing optical link.