Homeostatic fault tolerance in spiking neural networks utilizing dynamic partial reconfiguration of FPGAs

Anju P. Johnson, Junxiu Liu, Alan G. Millard, Shvan Karim, Andy M. Tyrrell, Jim Harkin, Jon Timmis, Liam McDaid, David M. Halliday

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddTrafodion Cynhadledd (Nid-Cyfnodolyn fathau)

1 Dyfyniadau(SciVal)

Crynodeb

We present a novel methodology that addresses the problem of faults in synapses of a spiking neural network using astrocyte regulation, inspired by recovery processes in the brain. Since Field Programmable Gate Arrays (FPGAs) are widely used for neural network applications, we aim to achieve fault tolerance in an astrocyte-neuron unit implemented on an FPGA. A fault is considered as a reduction in transmission probability of a synapse, leading to reduced spiking activity. Our novel repair mechanism exploits Dynamic Partial Reconfiguration (DPR) of the FPGA Clock Management Tiles (CMTs) to increase the clock frequency of neurons with reduced synaptic input, which restores the firing rate to pre-fault levels. The system maintains effective functional behavior with a loss of up to 90% of the original synaptic inputs to a neuron. Our repair mechanism has minimal hardware footprints with the repair unit which consumes only 0.8215% of the complete design and therefore supports scalable implementations. Additionally, the impact on power consumption of the design is also minimal (1.371W). The work opens up a novel way to utilize the capabilities of modern hardware to mimic homeostatic self-repair behavior achieving fault recovery.

Iaith wreiddiolSaesneg
Teitl2017 International Conference on Field-Programmable Technology, ICFPT 2017
CyhoeddwrIEEE Press
Tudalennau195-198
Nifer y tudalennau4
ISBN (Electronig)9781538626559
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 02 Gorff 2017
Digwyddiad16th IEEE International Conference on Field-Programmable Technology, ICFPT 2017 - Melbourne, Awstralia
Hyd: 11 Rhag 201713 Rhag 2017

Cyfres gyhoeddiadau

Enw2017 International Conference on Field-Programmable Technology, ICFPT 2017
Cyfrol2018-January

Cynhadledd

Cynhadledd16th IEEE International Conference on Field-Programmable Technology, ICFPT 2017
Gwlad/TiriogaethAwstralia
DinasMelbourne
Cyfnod11 Rhag 201713 Rhag 2017

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