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Conflict-aware workload co-execution on SX-aurora TSUBASA by Riku Nunokawa; Yoichi Shimomura; Mulya Agung; Ryusuke Egawa; Hiroyuki Takizawa is a Computer Science article available to read on EtoBox.

What is Conflict-aware workload co-execution on SX-aurora TSUBASA about?

## Abstract NEC SX-Aurora TSUBASA (SX-AT) is the latest vector supercomputer, consisting of host processors called Vector Hosts (VHs) and vector processors called Vector Engines (VEs). The goal of this work is to simultaneously use both VHs and VEs to increase the resource utilization and improve the system throughput by co-executing more workloads. One difficulty is that performance interferences among VH and VE workloads could occur because they share some computing resources and potentially compete to use the same resource at the same time, so-called resource conflicts. To achieve efficient workload co-execution, first, this paper experimentally investigates the performance interference between a VH and a VE, when each of the two processors executes a different workload. It is empirically shown that the frequency of system calls from the VE workload could be a good indicator to predict if the co-execution could cause severe performance interference, even though monitoring system calls requires a huge runtime overhead and it is impractical to simply use it for decision making of co-execution. Then, this paper proposes a workload co-execution strategy based on a practical approach

Who reads Conflict-aware workload co-execution on SX-aurora TSUBASA?

Author

Riku Nunokawa; Yoichi Shimomura; Mulya Agung; Ryusuke Egawa; Hiroyuki Takizawa

Publisher

Springer Science and Business Media LLC

Published

2023

Field

Computer Science (Physical Sciences)