Problem
Research questions and friction points this paper is trying to address.
neuromorphic systems
inter-core communication
small-world organization
memory footprint
latency
Small-World Communication Fabrics for Neuromorphic Multicore-SoCs
🤖 AI Summary
研究通过对比NeoCorAl和MOSAIC两种神经形态多核系统，探讨了小世界网络组织在减少通信延迟、能耗及内存占用方面的作用。
📝 Abstract
As neuromorphic systems scale beyond a single core, inter-core event communication can become a dominant contributor to memory footprint, latency, and energy consumption. Biological neural systems address a similar scaling challenge through small-world organization, combining dense local connectivity with sparse long-range projections. In this work, we compare two recent multicore neuromorphic systems implemented in the same 22-nm FDSOI technology and explicitly optimized for such connectivity. The first, NeoCorAl, uses an asynchronous packet-switched tree with hierarchical multicast, whereas the second, MOSAIC, employs an RRAM-based, circuit-switched two-dimensional mesh that performs routing in memory. We examine the resulting trade-offs in routing flexibility, hop count, memory requirements, multicast efficiency, and scalability. We further study how the relative efficiency of tree- and mesh-based routing depends on communication locality in spatially-embedded, random, and layered networks. Finally, we discuss routing-aware training as a means of jointly optimizing neural connectivity, task performance, and hardware mappability.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Small-World Organization
Neuromorphic Multicore-SoCs
Routing in Memory
Hierarchical Multicast
Routing-Aware Training
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