ML-PCM : Machine Learning Technique for Write Optimization in Phase Change Memory (PCM)

Mahek Desai, Rowena Quin, Marjan Asadinia

Abstract: As transistor-based memory technologies like dynamic random access memory (DRAM) approach their scalability limits, the need to explore alternative storage solutions becomes increasingly urgent. Phase-change memory (PCM) has gained attention as a promising option due to its scalability, fast access speeds, and zero leakage power compared to conventional memory systems. However, despite these advantages, PCM faces several challenges that impede its broader adoption, particularly its limited lifespan due to material degradation during write operations, as well as the high energy demands of these processes. For PCM to become a viable storage alternative, enhancing its endurance and reducing the energy required for write operations are essential. This paper proposes the use of a neural network (NN) model to predict critical parameters such as write latency, energy consumption, and endurance by monitoring real-time operating conditions and device characteristics. These predictions are key to improving PCM performance and identifying optimal write settings, making PCM a more practical and efficient option for data storage in applications with frequent write operations. Our approach leads to significant improvements, with NN predictions achieving a Mean Absolute Percentage Error (MAPE) of 0.0073% for endurance, 0.23% for total write latency, and 4.92% for total write energy.