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- W2918577955 abstract "In this paper, we present a methodology for effi-ciently mapping neural networks over a neuromorphic computing architecture. The target architecture is a globally asynchronous locally synchronous (GALS) multi-core designed for simulating spiking neural networks (SNN) in real-time, that is spike timings should be the same as in the human brain. The SNN is implemented as a set of concurrent tasks modelling the behaviour of biological neurons, which are executed on the processing cores and communicate through spikes travelling on a network-on-chip. The problem of neuron-to-core mapping is relevant as a non-efficient allocation may impact real-time and reliability of the neural network execution. We designed a task placement pipeline capable of analysing the network of neurons and producing a placement configuration that enables a reduction of communication between computational nodes. The neuron-to-core mapping problem has been formalised as a problem of minimisation of synaptic elongation. Intuitively, this metric represents the cumulative distance that spikes generated by neurons running on a specific core have to travel to reach their destination core. The proposed placement methodology allows using different techniques to solve the problem. In this work Spectral Analysis, Multilevel Static Mapping, and Simulated Annealing were compared evaluating the overall post-placement synaptic elongation. Results point out that mapping solutions taking into account the directionality of the SNN provide a better placement and quantify this impact. Between all techniques considered only the Simulated Annealing was able to overcome an improvement of 25% compared to a random placement." @default.
- W2918577955 created "2019-03-11" @default.
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- W2918577955 date "2018-10-01" @default.
- W2918577955 modified "2023-10-15" @default.
- W2918577955 title "Directed Graph Placement for SNN Simulation into a multi-core GALS Architecture" @default.
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- W2918577955 doi "https://doi.org/10.1109/vlsi-soc.2018.8644782" @default.
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