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Is anyone working on running neural networks on CPU architectures that are not limited by synchronous clock signals? Organic neural networks are inherently asynchronous and signals propagate through different parts of the network at their own pace.

Yes, for over a decade now and it's already available in the cloud. It's a spinn-off of human brain project. Search for spinnaker neuromorphic computing.

I had a quick look around and it seems like this is very specifically designed and used for the Human Brain Project, which ended in 2023 and at least according to wiki the most recent version of this was from 2019. Is it still being worked on, and is it actively being developed for anything outside of brain simulation?

https://en.wikipedia.org/wiki/SpiNNaker

Microsofts Bitnet is really solid on CPUs (though still better to train on a GPU for speedier training) but theres a lot of room for improvement in these spaces.

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