Seastar

Abstract

A large number of 2nd generation high-performance computing applications and services rely on adaptive and dynamic architectures and execution strategies to run efficiently, resiliently, and at scale on today's HPC infrastructures. They require information about applications and their environment to steer and optimize execution. We define this information as telemetry data.Current HPC platforms do not provide the infrastructure, interfaces and conceptual models to collect, store, analyze, and access such data. Today, applications depend on application and platform specific techniques for collecting telemetry data; introducing significant development overheads that inhibit portability and mobility. The development and adoption of adaptive, context-aware strategies is thereby impaired. To facilitate 2nd generation applications, more efficient application development, and swift adoption of adaptive applications in production, a comprehensive framework for telemetry data management must be provided by future HPC systems and services.We introduce Seastar, a conceptual model and a software framework to collect, store, analyze, and exploit streams of telemetry data generated by HPC systems and their applications. We show how Seastar can be integrated with HPC platform architectures and how it enables common application execution strategies.

Towards a Comprehensive Framework for Telemetry Data in HPC Environments

“…In this section, we discuss the blueprint for one possible implementation of Seastar within an existing HPC cluster. This blueprint has its origin in the Seastar research prototype [17] we have been building to explore various concepts around the API.…”