AISimulate Core

aisimulate-core is the single public Rust package for engine-neutral inference simulation. It preserves three explicit implementation and API layers:

• aisimulate_core::engine owns scheduling, native GPU KV accounting, preemption, timing, and attention-DP composition.
• aisimulate_core::replay owns deterministic virtual time, logical-worker lifecycle, placement and scaling composition, and replay reports.
• aisimulate_core::perfmodel owns the imported AIConfigurator latency, memory, and compiled-model implementation. Its EngineConfig and engine stay in this namespace so they cannot collide with the replay engine.

The crate root promotes the common EngineConfig, ReplaySpec, Replayer, canonical ReplayReport, and timing-provider contracts. Dynamo-specific Router, Planner, transport, and live-runtime adapters remain outside this crate.

Source layout and upstream syncs

The former AIConfigurator Rust crate is kept as a stable mirror subtree under src/perfmodel/. The crate root contains only the small compatibility aliases needed by that imported source and the public namespace boundary. Keeping the implementation together instead of interleaving it with replay makes future AIConfigurator commits path-rewritable and reviewable while still producing a single crates.io package.

The default feature set is Rust-only and does not depend on PyO3. The python feature exposes registration hooks for the unified aisimulate._runtime extension, and embed-python additionally enables PyO3 interpreter initialization for standalone Rust applications that call into Python during one-time model compilation.