HydraRPC - Efficient RPC System Using CXL-Attached HDM

Explore a groundbreaking conference talk from USENIX ATC '24 that introduces HydraRPC, an innovative approach to Remote Procedure Call (RPC) systems in the era of Compute Express Link (CXL) technology. Delve into how HydraRPC leverages CXL-attached Host-Device Memory (HDM) for data transmission, offering benefits such as memory sharing, memory semantics, and high scalability. Discover how this novel approach eliminates expensive network rounds, memory copying, and serialization/deserialization processes. Learn about the implementation of non-cachable sharing and a busy-polling free notification mechanism to overcome limitations in CXL.cache protocols. Gain insights from the evaluation results of HydraRPC on real CXL hardware, showcasing the potential efficiency of utilizing CXL HDM in building next-generation RPC systems.

USENIX ATC '24 - HydraRPC: RPC in the CXL Era