GMS:PCGN Package: Difference between revisions
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{{MODFLOW Links}} | {{MODFLOW Links}} | ||
The PCGN package or Preconditioned Conjugate Gradient Solver with Improved Nonlinear Control is one of the solvers available for MODFLOW-2005. Using the PCGN solver a specific GMS MODFLOW executable (mf2k5_..._parallel.exe) can be run with parallel processing on a single machine (though not across multiple machines on a network) greatly reducing runtime. | The PCGN package or Preconditioned Conjugate Gradient Solver with Improved Nonlinear Control is one of the solvers available for MODFLOW-2005. Using the PCGN solver a specific GMS MODFLOW executable (mf2k5_..._parallel.exe) can be run with parallel processing on a single machine (though not across multiple machines on a network) greatly reducing runtime. | ||
The ''MODFLOW PCGN Solver'' dialog has the following options: | |||
* Comments (Text) | |||
* Max number of outer iterations (ITER_MO) | |||
* Max number of inner iterations (ITER_MI) | |||
* Head change criterion for convergence (CLOSE_R) | |||
* Residual criterion for convergence (CLOSE_H) | |||
* Relaxation parameter (RELAX) | |||
* Preconditioner fill level (IFILL) | |||
* Damping mode (ADAMP) | |||
* Damping restriction (DAMP) | |||
* Damping bound (DAMP_LB) | |||
* Rate (RATE_D) | |||
* Maximum head change (CHGLIMIT) | |||
* Convergence mode (ACNVG) | |||
* Minimum relative convergence (CNVG_LB) | |||
* Relative convergence increase power (MCNVG) | |||
* Relative convergence enhancement (RATE_C) | |||
* Progress reporting (IPUNIT) | |||
For more information on this solver see the USGS documentation at http://water.usgs.gov/nrp/gwsoftware/modflow2000/MFDOC/pcgn.htm | For more information on this solver see the USGS documentation at http://water.usgs.gov/nrp/gwsoftware/modflow2000/MFDOC/pcgn.htm | ||
