Flow Matching β€” anime faces 64x64

Rectified/conditional flow matching. Predicts velocity v = x1 - x0 along the straight path xt = (1-t)*x0 + t*x1, where x0 is noise and x1 is data.

  • UNet: ch=64, mults=(1,2,2,4), attn @16 β€” ~16.3M params
  • Trained: 30 epochs, final FM loss 0.2059
  • Sampling: Euler ODE, x += v(x,t)*dt, ~10 steps is enough
  • Checkpoint contains net, ema, opt, scaler, losses β€” resumable.

Use the ema weights for sampling.

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