Table 3.

Simulation parameters common to all forward problem classes.

Parameter	Selected value	Typical value, simple problem	Typical value, difficult problem
FMM precision	1e–6	1e–2	1e–4
GMRES target residual, initial	1e–5	1e–4	1e–3
GMRES target residual, general	1e–5	1e–4	1e–3
GMRES max iterations, initial	100	20	50
GMRES max iterations, general	50	20	50