All-to-All Node Interconnect Architecture for Supercomputers
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Solution Overview
Problem
Current supercomputer network designs face challenges in achieving low-latency and high-bandwidth connections between processors while managing power and cost effectively, often relying on electrical connections with supplemental optical links to form an all-to-all network.
Innovation Solution
An all-to-all electrical and optical connection network architecture that provides two independent communication paths between any two processors, utilizing a combination of electrical links and optical links, with each communication path consisting of at most two electrical links and one optical link, to facilitate efficient data transfer across a multitude of processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrical connections with supplemental optical links are used to form an all-to-all network, then bandwidth and connectivity are improved, but power consumption and cost increase
Solution Approach 1:
The patent applies local quality by using electrical connections for short-distance communications within a node and optical connections for long-distance communications between nodes. This selective approach optimizes power consumption by using lower-power electrical connections where sufficient while reserving higher-power optical connections only where needed for extended reach, thereby improving bandwidth selectively without uniformly increasing power consumption across all connections.
Solution Approach 2:
The network is segmented into local electrical connection domains and remote optical connection domains. By dividing the communication infrastructure into these segments, the system achieves high bandwidth locally through electrical connections while using optical connections only for inter-node communication, thus improving overall network bandwidth while controlling total power consumption through segmented deployment.
2Adaptability or versatility
If electrical connections with supplemental optical links are used to form an all-to-all network, then connectivity is improved, but cost increases
Solution Approach 1:
The patent implements local quality by providing full electrical connectivity within each node while using optical connections only for remote node-to-node communication. This selective connectivity approach achieves comprehensive all-to-all network connectivity while controlling costs by avoiding the expense of optical connections for all communication paths, thereby improving connectivity adaptability without proportionally increasing manufacturing cost.
Solution Approach 2:
The communication infrastructure is segmented into electrical connection segments for local communication and optical connection segments for remote communication. This segmentation enables the system to achieve comprehensive connectivity while managing cost by deploying expensive optical infrastructure only where necessary for inter-node communication rather than for all communication paths.
3Speed
If optical connections are used for all-to-all networking, then bandwidth and latency are improved, but power consumption and cost increase significantly
Solution Approach 1:
The patent applies local quality by using electrical connections for short-distance communications where latency requirements are less stringent and optical connections for long-distance communications where latency reduction is critical. This selective deployment optimizes the speed-latency tradeoff while controlling power consumption by using lower-power electrical connections for local traffic and reserving higher-power optical connections for remote traffic where their performance benefits are most needed.
Data Source
AI summary
Node interconnect architectures to implement a high performance supercomputer are provided. For example, a node interconnect architecture for connecting a multitude of nodes (or processors) of a supercomputer is implemented using an all-to-all electrical and optical connection network which provides two independent communication paths between any two processors of the supercomputer, wherein a communication path includes at most two electrical links and one optical link.