SPIN Unprocessed October 26, 2026 ai_technology community
Deepity: a hand-tuned C++/CUDA predictive coding library, beats jpc (JAX) and ngc-learn on MNIST (CPU benchmarks + source inside) [P]
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I've been building a predictive coding (PC) engine from scratch in C++20, with a thin Python layer on top, and just cut the first public release. Posting here for feedback and because I haven't seen many from-scratch PC implementations with real kernel-level optimization work behind them. What predictive coding is: instead of backprop's single global error signal flowing backward through a stored computation graph, each layer in a PCN holds a local belief about its own state and comp
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