PL-PL kernel simulations

[bo3z]

I am trying to understand the simulator flow a bit better - after running make STACK_TYPE=TCP EN_FANIN=1 simdll, I see both the CCLO and the kernels are synthesised with Vivado/Vitis. Then, I start the simulator with /bin/cmake . && python3 run.py -n <RANKS> --no-kernel-loopback -w and run the host code with /bin/cmake . && make && mpirun -np <RANKS> bin/test.

However, after modifying the application kernel, and, restarting the test with /bin/cmake . && make && mpirun -np <RANKS> bin/test in the host directory, I see the reflected changes without having to run make STACK_TYPE=TCP EN_FANIN=1 simdll again.

Is my understanding correct that the simulator uses the synthesised CCLO but not the application kernel (i.e. the source code for the application kernel comes from the C++ source code)?