Segment-to-Segment Network Interface for Multi-Chip Packet Flow
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Solution Overview
Problem
Existing network systems face challenges in managing packet flow across multiple integrated circuits, leading to high resource consumption in terms of circuit area and power, due to the need for extensive network management resources.
Innovation Solution
The implementation of segment-to-segment (S2S) network interface circuits that bridge network segments, reducing the need for resources by managing packet flow between physically and logically independent networks, each optimized for specific types of traffic, such as CPU, I/O, and relaxed order networks, and using credit-based schemes to allocate resources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network management resources are increased to manage packet flow across multiple integrated circuits, then network management capability is improved, but circuit area and power consumption increase
Solution Approach 1:
The network is divided into multiple independent segments, each with its own packet switching fabric. This segmentation allows localized packet management within each segment, reducing the need for extensive network-wide management resources and thereby lowering overall power consumption while maintaining effective network control.
Solution Approach 2:
Segment-to-segment network interface circuits are introduced as intermediary components between network segments. These interfaces manage packet flow between segments using credit-based schemes, eliminating the need for centralized network management resources and reducing power consumption while maintaining reliable packet delivery.
2Reliability
If network management resources are increased to manage packet flow across multiple integrated circuits, then network management capability is improved, but circuit area increases
Solution Approach 1:
By segmenting the network into independent units with localized packet switching fabrics, the circuit area required for network management is distributed and reduced. Each segment only needs to manage packets within its boundaries, significantly reducing the total circuit area compared to a monolithic network management approach.
Solution Approach 2:
The segment-to-segment interface circuits serve as compact intermediary components that enable communication between segments without requiring extensive management infrastructure. The credit-based packet flow management at these interfaces is space-efficient, reducing overall circuit area while maintaining network management capability.
3Use of energy by moving object
If multiple network segments are used to reduce resource consumption, then resource consumption is reduced, but network complexity increases
Solution Approach 1:
The network is segmented into independent units with standardized interfaces, which simplifies individual segment design while enabling scalable deployment. The uniform credit-based interface protocol across all segments reduces the complexity of managing multiple segments, as each segment operates independently with the same rules.
Solution Approach 2:
The segment-to-segment interface circuits provide a standardized intermediary layer that simplifies network management. The credit-based scheme at these interfaces offers a simple, uniform mechanism for controlling packet flow between segments, reducing the complexity of managing multi-segment networks compared to ad-hoc connection methods.
4Productivity
If traffic is segregated into different networks, then network performance is optimized for specific traffic types, but device complexity increases
Solution Approach 1:
Different traffic types (CPU, I/O, relaxed order) are segregated into separate network segments, allowing each segment to be optimized for its specific traffic characteristics. This improves overall network productivity while the modular segmented architecture keeps the complexity manageable through standardization.
Solution Approach 2:
The segment-to-segment interface circuits serve multiple functions: they manage packet flow between segments, implement credit-based resource allocation, and provide standardized connectivity across different network types. This multi-functionality reduces the need for separate specialized components, thereby limiting the increase in device complexity while achieving traffic optimization.
Data Source
AI summary
In an embodiment, a system includes a plurality of integrated circuits have subsets of a plurality of agents. The plurality of integrated circuits may have network segments implemented wholly (e.g., entirely) within the respective integrated circuits and may have segment to segment (S2S) network interface circuits to couple to other network segments of a plurality of network segment forming a network among the plurality of agents.