[petsc-users] block ILU(K) is slower than the point-wise version?

[Kong, Fande]

Hi All,

I am solving a nonlinear system whose Jacobian matrix has a block
structure. More precisely, there is a mesh, and for each vertex there are
11 variables associated with it. I am using BAIJ.

I thought block ILU(k) should be more efficient than the point-wise ILU(k).
After some numerical experiments, I found that the block ILU(K) is much
slower than the point-wise version.

Any thoughts?

Fande,
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