Cannot run the script with full core

Hello everyone:
    I have write a script to bulid a amorphous cell and calcul its MD properities(in the win10 system). Before I run it in the server(centos  system) , I have set it run in parallel on 44 cores, but it always run this task with single cores.

    At the beginning, I conside that it has to work with single core,when construct the amorphous cell, and influent the next step. With that reason, I delete the construction part and run the script. But it still work with the single core, when run the Forcite ->Geometryoptimization and the Forcite->Dynamic part of the script.

    Next,I have tried to run the script which only contain the Forcite->Dynamic task. It can run with all the 44 cores.

    All in all, I confuse that why does this situation occur?Is there a problem with my script?How to solve it?

    If you can help me I will be very grateful.

Best wish.

HaoTian Zhang