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arXiv · 2305.03943

Memory Disaggregation: Advances and Open Challenges

Hasan Al Maruf·Mosharaf Chowdhury
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Abstract

Compute and memory are tightly coupled within each server in traditional datacenters. Large-scale datacenter operators have identified this coupling as a root cause behind fleet-wide resource underutilization and increasing Total Cost of Ownership (TCO). With the advent of ultra-fast networks and cache-coherent interfaces, memory disaggregation has emerged as a potential solution, whereby applications can leverage available memory even outside server boundaries. This paper summarizes the growing research landscape of memory disaggregation from a software perspective and introduces the challenges toward making it practical under current and future hardware trends. We also reflect on our seven-year journey in the SymbioticLab to build a comprehensive disaggregated memory system over ultra-fast networks. We conclude with some open challenges toward building next-generation memory disaggregation systems leveraging emerging cache-coherent interconnects.

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Hasan Al Maruf, Mosharaf Chowdhury. 2023-05-06. Memory Disaggregation: Advances and Open Challenges. https://arxiv.org/abs/2305.03943

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