RGMRES                      ! Iterative method: BiCGSTAB BiCG CGS RGMRES BiCGSTABL CG
CSR                         ! Storage format CSR COO JAD 
0030                        ! IDIM; domain size is idim**3
2                           ! ISTOPC
0100                        ! ITMAX
10                          ! ITRACE
30                          ! IRST     (restart for RGMRES and BiCGSTABL) 
1.d-6                       ! EPS
3L-MUL-RAS-BJAC4-ILU        ! Descriptive name for preconditioner (up to 40 chars) 
ML                          ! Preconditioner NONE  JACOBI  BJAC  AS ML
1                           ! Number of overlap layers for AS preconditioner at finest level
HALO                        ! Restriction operator NONE HALO 
NONE                        ! Prolongation operator NONE SUM AVG
GS                          ! Subdomain solver DSCALE ILU MILU ILUT UMF SLU 
2                           ! sweeps for GS
0                           ! Level-set N for ILU(N), and P for ILUT
1.d-4                       ! Threshold T for ILU(T,P) 
1                           ! Smoother/Jacobi  sweeps 
BJAC                        ! Smoother type  JACOBI BJAC AS; ignored for non-ML
2                           ! Number of levels in a multilevel preconditioner
SMOOTHED                    ! Kind of aggregation: SMOOTHED, NONSMOOTHED, MINENERGY
DEC                         ! Type of aggregation DEC SYMDEC GLB
DEGREE                      ! Ordering of aggregation NATURAL DEGREE
MULT                        ! Type of multilevel correction: ADD MULT
TWOSIDE                     ! Side of correction PRE POST TWOSIDE (ignored for ADD)
DIST                        ! Coarse level: matrix distribution DIST  REPL           
BJAC                        ! Coarse level: solver JACOBI BJAC UMF SLU  SLUDIST MUMPS
GS                          ! Coarse level: subsolver DSCALE  ILU UMF SLU  SLUDIST MUMPS
1                           ! Coarse level: Level-set N for ILU(N)
1.d-4                       ! Coarse level: Threshold T for ILU(T,P) 
4                           ! Coarse level: Number of Jacobi sweeps 
-0.10d0                     ! Smoother Aggregation Threshold: >= 0.0 default if <0
-10                         ! Coarse size limit to determine levels. If <0, then use NL