A DDPM from scratch in one PyTorch file, on a 6GB laptop GPU — plus an honest sampler ablation: what actually buys sample quality, a better solver or better-placed steps?
machine-learning deep-learning pytorch mnist generative-model educational from-scratch single-file ode-solver diffusion-models samplers ablation-study ddpm ddim karras napkin-series
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Updated
Aug 18, 2026 - Python