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Table 1 Time and memory used in MoVFEM with GPML-I boundary conditions (Fang and Wu 1996)

From: Multi-order vector finite element modeling of 3D magnetotelluric data including complex geometry and anisotropy

Element Linear Quadratic Lagrangian
Grid Ne \(62\times 62\times 47\) \(26\times 26\times 20\) \(26\times 26\times 20\)
DoF 561,519 172,680 338,352
NNZE 9,291,615 6,979,448 17,158,968
Assembly time 195.27 s 382.04 s 750.64 s
Total time 9872.5 s 2104.37 s 3584.95 s
\(\epsilon ^{\text{avg}}_\rho\) \(12.88\%\) \(0.23\%\) \(0.17\%\)
\(\epsilon ^{\text{avg}}_\phi\) \(7.37\%\) \(2.21\%\) \(2.21\%\)
  1. Times are shown in seconds, and the memory is presented in terms of the number of elements \(N_\text{e}\), the number of unknowns (DoF) and the number of non-zero entries for the global array NNZE. Average errors are shown for resistivity \(\epsilon ^{\text{avg}}_\rho\), and for the phase \(\epsilon ^{\text{avg}}_\phi\)