A collaboration led by Intel researchers has unveiled Loihi 2, a neuromorphic research chip that executes spiking neural networks with programmable neuron models and graded spikes. By co-locating memory and processing in 128 cores and leveraging event-driven computation, it achieves ultra-low-power, low-latency edge AI performance.
Key points
- Loihi 2 integrates 128 programmable neuromorphic cores with microcode engines to define arbitrary spiking neuron models.
- Introduction of 32-bit graded spikes enables richer, payload-carrying events without sacrificing event-driven sparsity.
- Benchmarks show up to 200× lower energy per inference and 10× lower latency on keyword spotting versus embedded GPUs.
Why it matters: This paradigm shift promises energy-efficient, autonomous AI at the edge, enabling real-time intelligence beyond conventional GPUs.
Q&A
- What is a spiking neural network?
- How do graded spikes differ from binary spikes?
- Why is neuromorphic hardware more energy-efficient?
- How are SNNs trained on neuromorphic platforms?