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Journal articles
Fast multi-core co-simulation of Cyber-Physical Systems : application to internal combustion engines
Abstract : The design process of complex Cyber-Physical Systems often relies on co-simulations of the system, involving the interaction of several simulated models of sub-systems. However, reaching real-time simulations is currently prevented by prohibitive CPU times using the single-threaded existing simulation tools. This paper investigates the problem of the e cient parallel co-simulation of hybrid dynamical systems. It introduces a finely-grained co-simulation method enabling numerical integration speed-ups. It is obtained using a partition across the model into loosely coupled sub-systems with sparse communication between modules. The proposed scheme leads to schedule a large number of operations with a wide range of execution times. A suitable o -line scheduling algorithm, based on the input/output dynamics of the models, is proposed to minimize the simulation errors induced by the parallel execution. This scheme is finally tested using the phenomenological model of a combustion engine issued from the Functional Mockup Interface framework. Compared with the sequential case, it shows significant speed-ups while keeping the numerical integration accuracy under control.
Cited literature [29 references]
https://hal-ifp.archives-ouvertes.fr/hal-01018348
Contributor : Françoise Bertrand Connect in order to contact the contributor
Submitted on : Thursday, November 20, 2014 - 5:01:58 PM
Last modification on : Thursday, January 20, 2022 - 4:18:54 PM
Long-term archiving on: : Monday, February 23, 2015 - 8:51:09 AM
Contributor : Françoise Bertrand Connect in order to contact the contributor
Submitted on : Thursday, November 20, 2014 - 5:01:58 PM
Last modification on : Thursday, January 20, 2022 - 4:18:54 PM
Long-term archiving on: : Monday, February 23, 2015 - 8:51:09 AM
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