Multicore performance prediction with MPET

Using scalability characteristics for statistical cross-architecture prediction

verfasst von
Oliver Jakob Arndt, Matthias Lüders, Christoph Riggers, Holger Blume
Abstract

Multicore processors serve as target platforms in a broad variety of applications ranging from high-performance computing to embedded mobile computing and automotive applications. But, the required parallel programming opens up a huge design space of parallelization strategies each with potential bottlenecks. Therefore, an early estimation of an application’s performance is a desirable development tool. However, out-of-order execution, superscalar instruction pipelines, as well as communication costs and (shared-) cache effects essentially influence the performance of parallel programs. While offering low modeling effort and good simulation speed, current approximate analytic models provide moderate prediction results so far. Virtual prototyping requires a time-consuming simulation, but produces better accuracy. Furthermore, even existing statistical methods often require detailed knowledge of the hardware for characterization. In this work, we present a concept called Multicore Performance Evaluation Tool (MPET) and its evaluation for a statistical approach for performance prediction based on abstract runtime parameters, which describe an application’s scalability behavior and can be extracted from profiles without user input. These scalability parameters not only include information on the interference of software demands and hardware capabilities, but indicate bottlenecks as well. Depending on the database setup, we achieve a competitive accuracy of 20% mean prediction error (11% median), which we also demonstrate in a case study.

Organisationseinheit(en)
Institut für Mikroelektronische Systeme
Typ
Artikel
Journal
Journal of Signal Processing Systems
Band
92
Seiten
981-998
Anzahl der Seiten
18
ISSN
1939-8018
Publikationsdatum
09.2020
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Steuerungs- und Systemtechnik, Theoretische Informatik, Signalverarbeitung, Information systems, Modellierung und Simulation, Hardware und Architektur
Elektronische Version(en)
https://doi.org/10.1007/s11265-020-01563-w (Zugang: Offen)
https://doi.org/10.1007/s11265-021-01691-x (Zugang: Offen)