Simulink code seems not to use pc's proccessing power.

I am working on " Spiral Galaxy Formation Simulation " example in Mathworks. I changed some numbers and equations (attached file).

I supposedly bought an expensive laptop so I could increase the number of particles. But I was surprised to see that even with high number of particles the CPU was at less than 20% in use, while none of the other stats was restraining the speed. The screen capture is indicating.

Answer 1

[John D'Errico]

That seems to indicate you are only using one core.

First, I might check

maxNumCompThreads

Then you might take a read here:

https://www.mathworks.com/help/simulink/ug/solving-embedded-performance-problems-using-multicore-processors-and-fpgas.html

[Walter Roberson]

Simulation does not normally use parallel processing. See https://www.mathworks.com/help/simulink/ug/running-parallel-simulations.html