GMS:SMS Package: Difference between revisions

MODFLOW
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Flow:	BCF6, HUF, LPF, UPW
Solvers:	DE4, GMG, NWT, PCG,; PCGN, LMG, SIP, SOR,; SMS
Other:	BAS6, BFH, CHD1, CLN, DRN1, DRT1, EVT1, ETS1, GAGE, GHB1, GNC, HFB1, HUF, LAK3, MNW1, MNW2, OUT1, RCH1, RIV1, SFR2, STR1, SUB1, SWI2, WEL1, UZF1
	v • e

Revision as of 15:47, 26 July 2016

Example of the MODFLOW SMS Solver dialog.

The Sparse Matrix Solver (SMS) Package is the solver used by MODFLOW-USG. The MODFLOW SMS Solver dialog has the following options:

Max head change between outer iterations (L)(HCLOSE)
Max head change between inner iterations (L)(HCLOSE)
Max number of outer nonlinear iterations for problem (MXITER)
Max number of inner linear iterations for problem (ITER1)
Print additional info to listing file (IPRSMS)
- (0) print nothing
- (1) print summary
- (2) print detail
Nonlinear solution method (NONLINMETH)
- (-2) Picard with Cooley
- (-1) Picard with Delta-Bar-Delta
- (0) Picard
- (1) Newton with Delta-Bar-Delta
- (2) Newton and Cooley
Linear matrix solver (LINMETH)
- (1) χMD
- (2) PCGU
- (3) SAMG
Options (OPTIONS)
- SPECIFIED
- SIMPLE
- MODERATE
- COMPLEX

Acceleration method (IACL)
- (0) conjugate gradient
- (1) ORTHOMIN
- (2) Bi-CGSTAB
Ordering scheme (NORDER)
- (0) original ordering
- (1) RCM ordering
- (2) minimum degree ordering
ILU decomposition level of fill (LEVEL)
Number of orthogonalizations for ORTHOMIN accel. (NORTH)
Reduced system (IREDSYS)
- (0) do not apply
- (1) apply
Residual tolerance criterion (RRCTOL)
Perform drop tolerance (IDROPTOL)
- (0) do not perform
- (1) perform
Drop tolerance value (EPSRN)

Linear acceleration method (CLIN)
- CG
- BCGS
Preconditioner (IPC)
- (0) None
- (1) Jacobi
- (2) ILU(0)
- (3) MILU(0)
Matrix scaling approach (ISCL)
- (0) None
- (1) POLCG preconditioner
- (2) l2 norm
Matrix reordering approach (IORD)
- (0) Original
- (1) reverse Cuthill Mckee
- (2) minimum degree
Convergence flow residual tolerance (L^3)(RCLOSEPCGU)
MILU(0) relaxation factor (RELAXPCGU)

This article is a [stub]. You can help xmswiki by expanding it.

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 * Convergence flow residual tolerance (L^3)(RCLOSEPCGU)
 * MILU(0) relaxation factor (RELAXPCGU)
-More information regarding inputs to the SMS package can be found in the MODFLOW-USG documentation at [http://pubs.usgs.gov/tm/06/a45/pdf/tm6-A45.pdf pubs.usgs.gov].
-The SMS package, when used with GMS, also includes the option of using the [[GMS:LMG Package|SAMG or LMG]] within the SMS package. This option is selected under the ''Linear matrix solver (LINMETH)'' option in the ''MODFLOW SMS Solver'' dialog.

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