HBFSim: A Simulator for Exploring HBF in Memory Hierarchies for LLMs
HBFSim is presented, an LLM-aware event-driven simulator for heterogeneous HBM+HBF memory systems that preserves application-level memory semantics while modeling flash-internal behavior and models HBM, HBF with host-managed flash translation, and conventional capacity tiers in one simulation driven by a calibrated ser...