...
You will need to follow the guidelines given here to connect to VPN and connect to the cluster login nodes, see https://help.nscc.sg/wp-content/uploads/2017/06/NSCC_New_User_Starter_Guide_v0.1Getting-Started-ASPIRE-1-v1.08-final.pdf
Get to know PBS scheduler, see https://help.nscc.sg/pbspro-quickstartguide/ and online. If you are familier with Slurm, see here comparison.
...