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mbsim-env / mbsim

A multi-body simulation software
https://www.mbsim-env.de
GNU Lesser General Public License v2.1
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Possible export of a MBSim model on an external hardware #48

Closed ga53hon closed 2 years ago

ga53hon commented 2 years ago

Dear developers,

I would like to export the model to an external hardware to analyze the possbility to further accelerate the model execution. At the moment I am familiar with the FMU-export for Simulink, which works pretty well. However, it is not possible to use the FMU on an external hardware. Therefore my question: would it be possible to export the model in any other format? My first trial would be to run the model on a GPU.

Thank you very much in advance Best regards Francesco Passigato

friedrichatgc commented 2 years ago

Hi Francesco, the FMU-export of MBSim works in all tools which are able to import FMI 1.0. See https://fmi-standard.org/tools/ for a list of tools. MBSim supports FMI 1.0 export for Co-Simulation and Model-Exchange. However, this works only for the two supported platform of MBSim: win64 and linux64. The only other way to export the model is a linearized model export as state-space-representation: ABCD matrices. Use the LinearSystemAnalyzer analyzer for this (https://www.mbsim-env.de/static/runtime/xmlReference/http___www_mbsim-env_de_MBSimControl/index.html#LinearSystemAnalyzer) "Exporting" the non-linear model to a GPU is not possible by MBSim. I my view multi-body-systems are even not well suited for GPU computing.