C++ Engine

Storage, dtype, device — the runtime substrate every tensor sits on.

TensorImpl + OpEntry — Lucid's reference-counted value type.

Stream dispatch — CPU (Accelerate), GPU (MLX), Metal Performance Shaders.

Low-level compute primitives — gather, scatter, im2col, broadcast reduce.

Unary / binary / generic / composite ops + linalg, FFT, einops, complex.

Layer kernels — Conv, BatchNorm, attention, RNN, pooling, normalization.

Backward node graph + saved-tensor machinery for every primitive op.

SGD, Adam, AdamW, ASGD, Adadelta, Adagrad, RMSprop and friends.

RNG state + sampling primitives shared by initializers and distributions.

pybind11 entry points exposing the C++ surface to Python.