FAMFS - Get Ready for Big Pools of Disaggregated Shared Memory

Explore the future of disaggregated shared memory through this 51-minute conference talk from SNIA SDC 2025. Learn about the Fabric-Attached Memory File System (famfs), an open-source solution designed to enable disaggregated shared memory usage as memory-mappable files that map directly to shared memory. Discover how CXL technology enables both composable capacity-on-demand and shared memory capabilities, moving beyond traditional server-private memory models. Examine the challenges of shared memory both before and after memory disaggregation, and understand how CXL will shape disaggregated shared memory through Dynamic Capacity Device (DCD) overview, coherency options, and raw disaggregated memory usage. Gain insights into famfs implementation details, including its open-source development on GitHub and presentations at major conferences like Linux Plumbers Conference, Linux Storage File System and Memory Management summit, and Usenix FAST conference. Master the technical aspects of how famfs enables legacy applications to utilize shared memory with minimal or no modifications, while understanding the broader implications for system architecture and memory management in modern computing environments.