Auflistung nach Schlagwort "Multicore"
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- ZeitschriftenartikelCoherent multicore methodology and tooling(it - Information Technology: Vol. 59, No. 5, 2017) Reinkemeier, Philipp; Ittershagen, Philipp; Dieudonne, Laurent; Diebold, PhilippIn the mobility domains functions are often realized by software running on Electronic Control Units (ECU)s, which are interconnected in a network of ECU. Nowadays there is a trend to move to ECUs with multicore processors which imposes a major challenge: An increasing degree of parallelism. This additional parallelism when migrating existing software that has been developed for singlecore systems, to a multicore system, has to be used in an efficient way. Furthermore, an increase in parallelism can cause concurrent executions of software functions, which are not possible when being executed on a singlecore ECU. This makes reasoning about the software behaviour much more difficult and also poses problems during certification activities, when sufficient independence between functions needs to be ensured. Therefore tool support is absolutely necessary to address the challenges. In this article we describe methods and tools that have been developed and/or extended during the ARAMiS project to address particular challenges arising during the development of multicore systems. In general these challenges result from the increase in parallelism available in multicore architectures.
- ZeitschriftenartikelMulticore system architecture aspects and deployment(it - Information Technology: Vol. 59, No. 5, 2017) Kuntz, Stefan; Dieudonne, LaurentThe crucial foundation in developing embedded safety-critical real-time systems based on multicore based platforms is the capability to combined different methodologies and approaches with a sound formal description of the system architecture. With such a system of methodologies and system architectures it is possible to develop a system satisfying all requirements and even being able to optimize the overall system towards domain specific goals. This article discusses activities in ARAMiS, which have been performed on system architecture level, including improvements of modeling existing architectures and design techniques concerning reliability, independence, segregation and determinism for deployment strategies.
- ZeitschriftenartikelOnline monitoring for safety-critical multicore systems(it - Information Technology: Vol. 59, No. 5, 2017) Tobuschat, Sebastian; Kostrzewa, Adam; Bapp, Falco K.; Dropmann, ChristophUsing multicore processors in safety-critical systems is a challenge as well as an opportunity. The real parallelism, which may affect synchronization and determinism, leads to a safety-challenge, because new possible interferences might arise. Additionally, redundant software execution is possible within multicore systems. In complex multicore architectures one of the most important challenges is to know the system behavior and the recognition of any variations from the normal system behavior has to be guaranteed. For those cases it is necessary to monitor several states of the system, configurations, timing, etc. To monitor such a complex system a lot of information from the inside of the system needs to be evaluated without affecting the rest of the MPSoC.