Multigrid Method for Solution of 3D Helmholtz Equation Based on HOC Schemes

Table 2

Comparison of maximum absolute errors and CPU (seconds) for a Multigrid method with different schemes, for Example 2, , , and .

		CPU	V		CPU	V		CPU	V
4		0.062	2		0.042	2		0.042	2
8		0.074	2		0.059	2		0.057	2
16		0.080	2		0.080	2		0.063	2
32		0.093	2		0.187	2		0.181	2
64		0.118	2		0.329	2		0.313	2
128		0.290	2		2.269	2		2.252	2