(Optional) Set coarsest solver type.
(Optional) Set coarsest solver type. Current solver types set by csolver_type are: \begin{tabular}{l@{ -- }l} 1 SysPFMG-PCG (default) 2 SysPFMG
Current solver types set by csolver_type are:
\begin{tabular}{l@{ -- }l} 1
Alphabetic index