Expand description
The step graph: an authored step (a decode step, a prefill chunk) as the ops it runs and the tensors they touch, each tensor given the role a compiled lane needs to place it.
The graph is the step lifted into the one IR (TensorGraph::lift): every top-level tensor statement is one op,
and a statement the front end cannot lift — or a write it cannot account for — is refused by name. A tensor’s role
is the IR’s, from how the program uses it:
• a parameter is a tensor the program declares and reads as a position or as row indices (the token, a
chunk’s tokens, the position): a compiled step takes it at run time;
• state is a declared tensor an op writes in place (a KV cache by Set row, a convolution ring, a
delta-rule memory), carried from one step to the next;
• a constant is any other declared tensor (weights, norm vectors, rotary tables), which the lane’s binding
fills;
• an activation is what an op computes.
Re-exports§
pub use crate::tensor_graph::graph::GraphError;pub use crate::tensor_graph::graph::Role;