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getdp - Online in the Cloud

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PROGRAM:

NAME


GetDP - a General environment for the treatment of Discrete Problems

SYNOPSIS


getdp [file] [options]

DESCRIPTION


GetDP is a general finite element solver using mixed elements to discretize de Rham-type
complexes in one, two and three dimensions. The main feature of GetDP is the closeness
between the input data defining discrete problems (written by the user in ASCII data
files) and the symbolic mathematical expressions of these problems.

GetDP is a command-line program. See Gmsh for a graphical front-end.

WARNING


This man page does not describe the syntax of the input files: you should refer to the
info documentation for this (e.g. with info getdp). Up-to-date versions of the manual in
various formats are available at http://www.geuz.org/getdp/.

PROCESSING OPTIONS


file
is an ASCII file containing the problem definition, i.e., the structures the Texinfo
documentation will teach you to create. This file can include other files, so that
only one problem definition file should always be given on the command line. The input
files containing the problem definition structure are usually given the .pro extension
(if so, there is no need to specify the extension on the command line). The name of
this file (without the extension) is used as a basis for the creation of intermediate
files during the pre-processing and the processing stages.

-pre resolution-id
performs the pre-processing associated with the resolution called resolution-id. In
the pre-processing stage, GetDP creates the geometric database (from the mesh file),
identifies the degrees of freedom (the unknowns) of the problem and sets up the
constraints on these degrees of freedom. The pre-processing creates a file with a .pre
extension. If resolution-id is omitted, the list of available choices is displayed.

-cal
performs the processing. This requires that a pre-processing has been performed
previously, or that a -pre option is given on the same command line. The performed
resolution is the one given as an argument to the -pre option. In the processing
stage, GetDP executes all the operations of the selected resolution (such as matrix
assemblies, system resolutions, ...). The processing creates a file with a .res
extension.

-pos post-operation-id(s)
performs the post-processing operations selected by the post-operation-id(s). This
requires that a processing has been performed previously, or that a -cal option is
given on the same command line. If post-operation-id is omitted, the list of available
choices is displayed.

-msh filename
reads the mesh database from filename rather than reading it from the default problem
file name with the .msh extension appended.

-restart
resumes time loop processing from where it stopped.

-solve resolution-id
same as -pre resolution-id -cal.

-split
saves processing results in separate files (one for each timestep).

-res filename(s)
loads processing results from filename(s) instead of from the default problem file
name with the .res extension appended.

-name string
uses string as the default generic file name for input or output of mesh, pre-
processing and processing files.

-adapt filename(s)
reads adaptation constraints from filename(s).

-order float
specifies maximum interpolation order.

LINEAR SOLVER OPTIONS


-solver filename
specifies solver parameter file.

[PETSc options]
PETSc options (if GetDP was compiled with PETSc support).

LINEAR SOLVER OPTIONS


-bin
creates binary output files. -v2 creates mesh-based Gmsh output files when possible

OTHER OPTIONS


-check
lets you check the problem structure interactively.

-v int
sets the verbosity level. A value of 0 means that no information will be displayed
during processing. Higher values increase the amount of information displayed.

-p int
sets the progress update rate. This controls the refreshment rate of the counter
indicating the progress of the current computation.

-onelab name address
communicates with OneLab server through socket.

-version
displays the version number.

-info
displays detailed version information.

-help
displays a message listing basic usage and available options.

AUTHORS


Patrick Dular (patrick.dular at ulg.ac.be) and Christophe Geuzaine (cgeuzaine at
ulg.ac.be). See the documentation for a comprehensive list of contributors.

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