Presentation
Rememtier: Rethinking Memory Tiering for CXL-Based SSD via Large Granularity Memory Access
DescriptionThe growing prevalence of mixed workloads in datacenter servers has intensified memory contention, where auxiliary tasks interfere with main applications, leading to excessive page swapping and degraded performance. To address this, we propose a CXL SSD–based Workload-aware Reversed Memory Tiering System (WA-RMT) that redefines memory hierarchy by dedicating CXL DRAM as the fast tier for main applications while isolating auxiliary tasks in host memory. Complementing this design, a Sparse-burst Resistant Page Replacement Policy (SBR-PRP) distinguishes short-lived bursty pages from truly hot ones to prevent memory pollution. Our implementation introduces cacheable and streamed CXL.io memory accesses with data reordering for reduced latency. Evaluations using mixed workloads such as K-means, Radiosity, and ResNet50 show that the proposed system reduces execution time by up to 35% and swap-in latency by over 60% compared to conventional tiering. Together, WA-RMT and SBR-PRP offer a robust, workload-aware memory management solution for CXL-based systems
Event Type
Research Manuscript
TimeMonday, July 2711:23am - 11:36am PDT
LocationMtg Room 202C