Hello,

Is it possible to modify the Intel MKL Fast Poisson Solver for the problem of type:

Δ .[K(u). Δ(u) ] = f

where Δ is the gradient symbol (I didn't find the reverse triangle in the special characters). K(u) is a positive differentiable function dependent on the position. Check the equation here:

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.645.5026&rep=re...

The difference between the above equation and the demonstrated Poisson eqn. at MKL Poisson solver page is the term K(u).