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Table 3.

Same as Table 2, but for the Jacobi preconditioner.

Ns 20 40 60 80 100 120 140
Richardson 67 150 230 304 374 441 504
GMRES 12 18 24 29 33 37 41
BICGSTAB 8 12 15 18 20 23 24
CGS 10 16 22 26 30 33 37

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