Dear @joergbuchwald
After following your suggestion, the new ogs.exe (on Windows) complied by myself works very well for my THM model using PardisoLU!!! Computing time is reduced from previous 3 hours to current 30 mins! Thanks so much! I completed these efforts and really enjoy this process:
Btw, for the new users who could have the same problems as me, more detial about how to complie OGS6 using Intel mkl on Windows cmake-gui, please also refer to this post, How to use intel mkl in cmake-gui under Windows?
Cheers,
Rui