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GetDP(1)		       GetDP Manual Pages			GetDP(1)

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 ex-
     pressions 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://getdp.info.

PROCESSING OPTIONS
     file
	 is an ASCII file containing the problem definition,  i.e.,  the  struc-
	 tures 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 pro-
	 cessing stages.

     -pre resolution-id
	 performs the pre-processing associated with the resolution called reso-
	 lution-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  com-
	 mand  line. The performed resolution is the one given as an argument to
	 the -pre option. In the processing stage, GetDP executes all the opera-
	 tions 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-opera-
	 tion-id is omitted, the list of available choices is displayed.

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

     -msh_scaling value
	 multiplies the coordinates of all the nodes in the mesh by value.

     -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.

SEE ALSO
     gmsh(1),	GetDP	examples   (/usr/share/doc/getdp-*/),	GetDP	homepage
     (http://getdp.info).

     The full documentation for GetDP is maintained as a Texinfo manual.  If the
     info and getdp programs are properly installed at your site, the command

	    info getdp

     should give you access to the complete manual.

4th Berkeley Distribution	  27 April 2022 			GetDP(1)
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