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%%%%%%%%%%% General arguments % Lines starting with % are ignored.
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CSR ! Storage format CSR COO JAD
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0150 ! IDIM; domain size. Linear system size is IDIM**2
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POISSON ! PDECOEFF: POISSON, EXP, BOX, GAUSS
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% ! Coefficients of the PDE
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CG ! Iterative method:
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% ! BiCGSTAB BiCGSTABL BiCG CG CGS FCG GCR RGMRES
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2 ! ISTOPC
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00500 ! ITMAX
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1 ! ITRACE
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30 ! IRST (restart for RGMRES and BiCGSTABL)
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1.d-6 ! EPS
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%%%%%%%%%%% Main preconditioner choices %%%%%%%%%%%%%%%%
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ML-VBM-VCYCLE-FBGS-D-BJAC ! Longer descriptive name for preconditioner (up to 20 chars)
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ML ! Preconditioner type: NONE JACOBI GS FBGS BJAC AS ML POLY
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%
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%%%%%%%%%%% First smoother (for all levels but coarsest) %%%%%%%%%%%%%%%%
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FBGS ! Smoother type JACOBI FBGS GS BWGS BJAC AS POLY r 1-level, repeats previous.
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6 ! Number of sweeps for smoother
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1 ! degree for polynomial smoother
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CHEB_4_OPT ! Polynomial variant
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% Fields to be added for POLY
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POLY_RHO_EST_POWER % POLY_RHO_ESTIMATE Currently only POLY_RHO_EST_POWER
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% POLY_RHO_ESTIMATE_ITERATIONS default = 20
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% POLY_RHO_BA set to value
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1.0
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%
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0 ! Number of overlap layers for AS preconditioner
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HALO ! AS restriction operator: NONE HALO
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NONE ! AS prolongation operator: NONE SUM AVG
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L1-JACOBI ! Subdomain solver for BJAC/AS: JACOBI GS BGS ILU ILUT MILU MUMPS SLU UMF
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1 ! Inner solver sweeps (GS and JACOBI)
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LLK ! AINV variant
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0 ! Fill level P for ILU(P) and ILU(T,P)
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1 ! Inverse Fill level P for INVK
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1.d-4 ! Threshold T for ILU(T,P)
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%%%%%%%%%%% Second smoother, always ignored for non-ML %%%%%%%%%%%%%%%%
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NONE ! Second (post) smoother, ignored if NONE
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6 ! Number of sweeps for (post) smoother
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1 ! degree for polynomial smoother
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CHEB_4_OPT ! Polynomial variant
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POLY_RHO_EST_POWER % POLY_RHO_ESTIMATE Currently only POLY_RHO_EST_POWER
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% POLY_RHO_ESTIMATE_ITERATIONS default = 20
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% POLY_RHO_BA set to value
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1.0
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0 ! Number of overlap layers for AS preconditioner
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HALO ! AS restriction operator: NONE HALO
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NONE ! AS prolongation operator: NONE SUM AVG
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ILU ! Subdomain solver for BJAC/AS: JACOBI GS BGS ILU ILUT MILU MUMPS SLU UMF
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8 ! Inner solver sweeps (GS and JACOBI)
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LLK ! AINV variant, ignored otherwise
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0 ! Fill level P for ILU(P) and ILU(T,P)
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8 ! Inverse Fill level P for INVK
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1.d-4 ! Threshold T for ILU(T,P)
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%%%%%%%%%%% Multilevel parameters %%%%%%%%%%%%%%%%
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VCYCLE ! Type of multilevel CYCLE: VCYCLE WCYCLE KCYCLE MULT ADD
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4 ! Number of outer sweeps for ML
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-3 ! Max Number of levels in a multilevel preconditioner; if <0, lib default
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-3 ! Target coarse matrix size per process; if <0, lib default
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SMOOTHED ! Type of aggregation: SMOOTHED UNSMOOTHED
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COUPLED ! Parallel aggregation: DEC, SYMDEC, COUPLED
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MATCHBOXP ! aggregation measure SOC1, MATCHBOXP
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8 ! Requested size of the aggregates for MATCHBOXP
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NATURAL ! Ordering of aggregation NATURAL DEGREE
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-1.5 ! Coarsening ratio, if < 0 use library default
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FILTER ! Filtering of matrix: FILTER NOFILTER
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-0.0100d0 ! Smoothed aggregation threshold, ignored if < 0
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-2 ! Number of thresholds in vector, next line ignored if <= 0
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0.05 0.025 ! Thresholds
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%%%%%%%%%%% Coarse level solver %%%%%%%%%%%%%%%%
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BJAC ! Coarsest-level solver: MUMPS UMF SLU SLUDIST JACOBI GS BJAC
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ILU ! Coarsest-level subsolver for BJAC: ILU ILUT MILU UMF MUMPS SLU
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DIST ! Coarsest-level matrix distribution: DIST REPL
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1 ! Coarsest-level fillin P for ILU(P) and ILU(T,P)
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1.d-4 ! Coarsest-level threshold T for ILU(T,P)
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1 ! Number of sweeps for JACOBI/GS/BJAC coarsest-level solver
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%%%%%%%%%%% Dump parms %%%%%%%%%%%%%%%%%%%%%%%%%%
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F ! Dump preconditioner on file
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1 ! Min level
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20 ! Max level
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T ! Dump AC
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T ! Dump RP
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F ! Dump TPROL
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F ! Dump SMOOTHER
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F ! Dump SOLVER
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F ! Global numering ?
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