14.11.2017 Eingeladener Vortrag Prof. Teich, University of California, Irvine, USA
Prof. Jürgen Teich wurde mit seinem Vortrag „Application Mapping Methodologies for NoC-Based MPSOCs“ an die University of California, Irvine, USA, eingeladen.
Abstract: In this talk, he will give an overview of novel techniques for mapping applications to NoC-based multi-core architectures (MPSoCs). Complex applications requiring hetergenous processing resources are often described by task graphs with data dependencies. Here, the nodes represent actors which are typically executed periodically based on the availability of data. One prominent example of applications is stream processing. Here, it is important to guarantee either bandwidth or execution time requirements, but also security aspects, energy and reliability often impose constraints on the mapping of the tasks as well as the communication to cores, respectively the underlying NoC. Concerning mapping applications, we first present solutions based on self-embedding. The idea is here that a source node issues request to find appropriate resources for the sucessor tasks, and so on. The next class of techniques is called Hybrid Application Mapping (HAM). Here, a careful analysis and characterization of symmetric mappings to constellations of cores and routes is explored in a static phase of design space exploration. At run-time, the operating system then only searches for such constellations to be available for finding a concrete mapping. We present ideas of how timing constraints may be statically analysed in case of compositional MPSoC architectures such that deadlines or throughput requirements will be automatically guaranteed for streaming applications. Finally, we also discuss resource constellations such are able to satisfy certain securit requirements on an MPSoC.