PERF : MDEIM for nonlinear term is sooooo slow

emvalbuena / romtime

Unsteady Finite Element Reduced Order Model for Time Moving Domains

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PERF : MDEIM for nonlinear term is sooooo slow #38

Closed emvalbuena closed 2 years ago

emvalbuena commented 3 years ago

I wonder what is going on there ...

It's true that there are three nested loops:

Parameter space
- Timestemps
- Basis vectors

Perhaps I could combine the latter two and use multiprocessing.

That being said, it has more or less acceptable times (30 mins por 10 parameters for each ROM/DEIM/MDEIM) to get some results and pour them in a document.

emvalbuena commented 2 years ago

It was slow because the basis was orthogonal and the trilinear form well ... linear haha.

Hence the SVD could not compress.