Table 2: Comparison of performances for the Preconditioned EDG SOR and MEDG SOR.



Preconditioned methods
𝑁 Preconditioned EDG SORPreconditioned MEDG SOR
𝑤 𝑘 𝑡 (secs) 𝑒 𝑤 𝑘 𝑡 (secs) 𝑒

34 1.679 41 0 3 . 8 5 𝐸 0 6 1.442 16 0 3 . 4 7 𝐸 0 6
86 1.757 88 0.034 3 . 8 7 𝐸 0 6 1.5882 30 0.008 3 . 0 9 𝐸 0 6
118 1.774 106 0.051 4 . 4 7 𝐸 0 6 1.642 43 0.016 3 . 5 5 𝐸 0 6
186 1.782 151 0.133 4 . 6 8 𝐸 0 6 1.684 59 0.025 4 . 2 4 𝐸 0 6
222 1.795 168 0.198 4 . 1 5 𝐸 0 6 1.671 72 0.078 3 . 9 9 𝐸 0 6