Hierarchical Matrices Method and Its Application in Electromagnetic Integral Equations

Table 2

The time and memory cost of iterative solving aircraft model with different preconditioners.

	Time (seconds)	Memory (MBytes)
ML-SAI level 1	582.8	325.4
ML-SAI level 2	234.5	464.5
ML-SAI level 3	184.3	786.5
SAI with MLFMA	643.7	312.3
DBP	1134.2	213.9