RISA: Round-Robin Intra-Rack Friendly Scheduling Algorithm for Disaggregated Datacenters

TL;DR

RISA is a heuristic scheduling algorithm designed for disaggregated datacenters that reduces network usage, power consumption, and latency while improving execution time compared to existing methods.

Contribution

The paper introduces RISA, a novel heuristic scheduling algorithm tailored for disaggregated datacenters, optimizing resource allocation and network efficiency.

Findings

Reduces optical component power consumption by 33%.

Halves the average CPU-RAM round-trip latency.

Outperforms existing methods in execution time.

Abstract

Recent trends see a move away from a fixed-resource server-centric datacenter model to a more adaptable "disaggregated" datacenter model. These disaggregated datacenters can then dynamically group resources to the specific requirements of an incoming workload, thereby improving efficiency. To properly utilize these disaggregated datacenters, workload allocation techniques must examine the current state of the datacenter and choose resources that not only optimize the current workload request, but future ones. Since disaggregated datacenters are severely bottlenecked by the available network resources, our work proposes a heuristic-based approach called RISA, which significantly reduces the network usage of workload allocations in disaggregated datacenters. Compared to the state-of-the-art, RISA reduces the power consumption for optical components by 33% and reduces the average CPU-RAM round-trip latency by 50%. Additionally, RISA significantly outperforms the state-of-the-art in terms of execution time.