Qforder (qfV=qfV1lump)

Dear All,

I have a question regarding the qforder, more specifically on qfV=qfV1lump.

When I implement qfV=qfV1lump instead of default value, my program (P1 space) runs almost 3 to 5 times faster, with improved accuracy.

If I am not wrong, is it doing lumping of the mass matrix?
I wonder if the lumping can be as simple as adding qfV=qfV1lump to my varf?

Thanks in advance for your answer.