Generation and Optimization of Real-Time Code for Embedded Multiprocess and Multiprocessor Systems (E = Mp2)
|Acronym||E = Mp2|
|Name||Generation and Optimization of Real-Time Code for Embedded Multiprocess and Multiprocessor Systems|
(in German: Generierung und Optimierung von Echtzeitfähigem Code für Eingebettete Multiprozess- und Multiprozessor-Systeme)
|Role of TUHH||Applicant|
|Funds Donor||Deutsche Forschungsgemeinschaft (DFG)|
During the design of safety-critical real-time systems like, e.g., airbag or flight attitude controllers, their behavior is specified at a high abstraction level. Compilers are an indispensible tool on the way from such a model-based specification to an actual implementation. For singlecore and singleprocess systems, compilers have recently been extended to support real-time properties already during compilation. For multiprocess and multiprocessor systems, compilers currently lack such a support despite of the increasing relevance of such parallel systems.
E = Mp2 aims to provide a software development environment for multiprocess and multiprocessor systems which produces efficient and optimized program code that provably meets real-time constraints. For this purpose, it has to be clarified how compiler and scheduler of an operating system need to cooperate. In addition, novel timing models supporting response times of processes and schedulability of entire systems need to be developed. Based on these timing models, novel compiler optimizations targeting on worst-case timing aspects and schedulability are designed.
In multiprocess systems, tasks can preempt each other and thus interfere. E = Mp2 develops compiler optimizations considering such context switches and scheduling strategies. In multiprocessor systems, different cores can access shared resources (e.g., buses or memories) at the same time and thus can cause additional interference. Therefore, this project works on compiler optimizations minimizing the worst-case timing of such systems by considering accesses to shared resources.
E = Mp2 Publications of the Embedded Systems Design Group
|Title: WCET Analysis of Automotive Buses using WCC. <em>In Proceedings of the DATE Workshop on New Platforms for Future Cars</em>|
|Written by: Dominic Oehlert and Heiko Falk|
|in: March (2018).|
|Address: Dresden / Germany|
|how published: 18-95 OF18 NPCAR|
Note: doehlert, hfalk, ESD, emp2, WCC
Abstract: Bus systems build the backbone of the communication systems in modern cars. This leads to the fact that the effects of these bus systems have to be included during the WCET analysis of software running on these platforms. This paper shows how two bus systems commonly used in the automotive domain can be included into the WCET analysis using the WCC.