Table 1.

Compute time required to calculate the entries of the ligand desolvation matrix for barstar in the wild-type barnase–barstar complex (2806 independent PB solves). For both the curved BEM and FDM, the calculation was repeated at three discretization levels. For the curved BEM, the inverse average curved element edge length reported is for all surfaces in the bound state geometry. Normalized timings are relative to a single complete solve of the bound-state geometry.

Method
	Inverse Grid Spacing (Å−1)	Time (s)	Normalized Timing to 1 PB Solve
FDM	0.3	4.2 × 104	2806
	1.1	6.3 × 105	2806
	1.6	1.8 × 106	2806
	Inverse Average Curved Element Edge Length (Å−1)	Time (s)	Normalized Timing to 1 PB Solve
Curved BEM	2.1	7.6 × 105	279
	2.4	1.3 × 106	414
	2.9	2.0 × 106	495