In simulink simscape multibody I cannot make use of multiple CPU or GPU

Hi, I have model, created using simscape multibody, and I want run it using multiple CPU cores (I have 24). When I setup model configuration it doesn't work.

This parameters for the model:

https://drive.google.com/file/d/1lbv-eN_CeWOEkZeHGnJg0FLNDxf9_UDp/view?usp=sharing

It's model itself:

https://drive.google.com/file/d/15JdvEuDGaizdaSAN9rZUJyXtAnh42cM5/view?usp=sharing

suplementary .stl models:

https://drive.google.com/drive/folders/1YP7fIcWP3vOlyAAFM9aTmlHQHNODht18?usp=sharing

Answer 1

[Govind KM]

Hi Dmitriy,

I am assuming "When I setup model configuration it doesn't work" to mean that there is no observable speedup when using all the cores for simulation. Due to practical limits on performing operations in parallel, using multiple cores beyong a certain limit often results in slower overall operation due to the added overhead of synchronization and communication for sending data and collecting results. This related MATLAB Answer mentions this in more detail, along with a suggestion to use parsim in the case of independent operations:

https://www.mathworks.com/matlabcentral/answers/2142406-how-to-use-all-cores-for-running-a-simulink-model

Documentation for parsim, along with an example where co-simulation components are run on multiple cores can be found here:

https://www.mathworks.com/help/simulink/slref/parsim.html

https://www.mathworks.com/help/simulink/ug/run-co-simulation-components-on-multiple-cores.html#mw_bfed555f-cde4-4166-9436-5bbf577914a4

Hope this is helpful!