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Table 2 Relative runtimes for \(\pmb{\varepsilon\to0}\) , \(\pmb{h=0.359}\) ; the discretization is based on \(\pmb{R^{2}}\) edge functions and \(\pmb{\theta=10^{-4}}\) rad. The runtimes have been normalized with the runtime for \(\pmb{\varepsilon=10^{-1}}\)

From: An a priori error estimate for interior penalty discretizations of the Curl-Curl operator on non-conforming meshes

ε

PARDISO a

ILUPACK b

10−1

1

1

10−2

1.01

1.41

10−3

1.01

1.42

10−4

1.02

1.43

10−5

0.98

1.42

  1. aTime includes Cholesky factorization and back-substitution
  2. bTime includes ILU factorization and CG iterations