Hi everybody, I’m trying to solve a linear variational problem after having adopted a 3D mesh using c++ with fenics and another library called omega_h. The problem is that in some cases when I try to solve the same variational problem after the adaptation the program stops and I get the following …

Ok I had to readapt that solution to c++ languange, but in the end it seems to work. I report here my solution, it may be useful for someone else. Parameters param(“parameters”); param.add(“linear_solver”, “mumps”); solve( … , param); Thank you for the suggestion!

Error while solving a variational problem

variational formulation

dokken June 5, 2021, 9:35am 2

See for instance: UMFPACK error: out of memory despite system having free memory - #2 by plugged

Topic		Replies	Views
UMFPACK V5.7.8 (Nov 9, 2018): ERROR: out of memory with a non variational 3d problem Uncategorized	2	1450	March 10, 2021
Regarding inability to define linear variational problem a(u, v) = L(v) for all v General	5	445	February 10, 2023
UMFPACK error: out of memory despite system having free memory Uncategorized	14	6807	September 26, 2022
Using the mumps solver when calling solve Uncategorized	3	3446	July 24, 2019
Out of memory error Linear Algebra	5	3744	March 17, 2020

Error while solving a variational problem

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