Dear libmesh users/developers,

I have to solve a linear system of equations (system size approximately 10^6) 
very often (about 5000 times). The linear system of equations is the result of 
a FEM discretization of 3D linear elasticity. 

I thought about using a sparse Cholesky decomposition as the matrix is 
symmetric or a sparse LU decomposition, depending on availability. I have had a 
look at the Eigen package and their direct LU factorization for instance with 
Umfpack or SuperLU support looks very promising to me. 

Do you think that is a good option or do you have any other recommendations for 
me?

Thanks,
Kathrin 


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