3 \page ghs3dprl_hypo_page GHS3DPRL Parameters hypothesis
5 \n GHS3DPRL Parameters hypothesis works only with <b>Tetrahedron (Tepal with TetMesh-GHS3D)</b> algorithm.
7 \n This algorithm is a commercial software, its use requires a licence (http://www.distene.com/fr/build/offer.html).
9 \n Tepal gives the possibility to generate a partitioned
10 mesh with 200 million tetrahedrons on a computer with average memory size
11 (2Go RAM) in about 50 hours on one CPU (Xeon, 2008).
12 This is a serious alternative to GHS3D, which requires a much less common
13 configuration with 64Go RAM to only try to make a partition of a mesh with
14 200 million tetrahedrons, no result guaranteed.
16 \note The Plugin doesn't load in the Memory the supposedly large resulting meshes.
17 The meshes are saved in MED files and can be imported in the user-defined location via menu File-Import-MED Files.
18 \n Pay attention, that Salome GUI needs 2Go RAM. to load a MED
19 file with 5 million tetrahedrons.
21 \image html ghs3dprl_parameters_basic.png
25 <b>Name</b> - allows to define the name of the hypothesis (GHS3DPRL Parameters by default).
28 <b>MED_Name</b> - allows to define the path and the prefix of the
29 resulting MED files ("DOMAIN" by default).
30 If the path is not defined, the environment variable $SALOME_TMP_DIR
31 is used. If $SALOME_TMP_DIR is not defined as well, the environment
32 variable $TMP is used.
35 <b>Nb_Part</b> - allows to define the number of generated MED files.
36 The initial skin (triangles) will be meshed (tetrahedrons) and partitioned
37 in Nb_Part by the elementary algorithm implemented in Tepal.<br>
40 <b>Keep_Files</b> - if this box is checked, input files of Tepal
41 (GHS3DPRL.points and GHS3DPRL.faces) are not deleted after use (...if the
42 background mode was not used).
45 <b>Tepal_in_Background</b> - if this box is checked, Tepal execution
46 and MED file generation are launched in background mode and the user
47 can even exit Salome. Pay attention that in this case Tepal algorithm works
48 independently of "killSalome.py", and sometimes on another host.
51 <b>To_Mesh_Holes</b> - if this box is checked, the parameter component
52 of tetmesh-ghs3d will mesh holes.
55 <h1>Modifying GHS3DPRL Advanced Parameters</h1><br>
56 GHS3DPRL Plugin launches a standalone binary executable tepal2med.<br>
57 tepal2med launches tepal, waits for the end of computation, and
58 converts the resulting output tepal files into MED files.<br>
59 Some advanced optional parameters are accessible as arguments.<br>
61 If keep_files option is checked, it is possible to re-launch tepal2med
62 or tepal in the Terminal as a command with custom parameters.<br>
65 <b>Advanced tepal2med Parameters</b> - type "tepal2med --help" in the Terminal. <p>
68 myname@myhost > /export/home/myname/salome_5/GHS3DPRLPLUGIN_5/bin/salome/tepal2med --help
70 --help : produces this help message
71 --casename : path and name of input tepal2med files which are
72 - output files of tepal .msg .noboite .faces .points .glo
73 - output file of GHS3DPRL_Plugin casename_skin.med (optional)
74 with initial skin and its initial groups
75 --number : number of partitions
76 --medname : path and name of output MED files
77 --limitswap : max size of working cpu memory (Mo) (before swapping on .temp files)
78 --verbose : trace of execution (0->6)
79 --test : more tests about joints, before generation of output files
80 --menu : a GUI menu for option number
81 --launchtepal : also launch tepal on files casename.faces and casename.points and option number
82 --meshholes : force parameter component of tetmesh-ghs3d to mesh holes
83 --background : force background mode from launch tepal and generation of final MED files (big meshes)
84 --deletegroups : regular expression (see QRegExp) which matches unwanted groups in final MED files
85 (try --deletegroups="(\bAll_Nodes|\bAll_Faces)"
86 (try --deletegroups="((\bAll_|\bNew_)(N|F|T))"
88 tepal2med --casename=/tmp/GHS3DPRL --number=2 --medname=DOMAIN --limitswap=1000
89 --verbose=0 --test=yes --menu=no --launchtepal=no
96 <b>Advanced tepal Parameters</b> <p>
100 USAGE : tepal options
103 --filename name (-f name) :
104 Prefix of the input case (MANDATORY)
107 Number of subdomains to make (MANDATORY)
109 --ghs3d ghs3d options (-g ghs3d options) :
110 Runs temesh ghs3d on a previously generated subdomain. (ghs3d options must be "quoted")
113 Max amount of memory (megabytes) allowed for ghs in the cutting process. (default is 0 : unlimited)
116 Only (re)meshes all subdomains and updates communications messages
118 --mesh_call command (-c command) :
119 Calls the user specified command for meshing all the
120 subomains after their skin has been generated
123 Only computes and shows some statistics on subdomains
126 Merges final subdomains skins
128 --rebuild_tetra (-R ) :
129 Merges final subdomains skins and tetraedra
131 --rebuild_iface (-i ) :
132 Includes interfaces in final subdomains merge
134 --rebuild_retag (-t ) :
135 Tags vertices, faces (and tetra if selected) with their
136 subdomain number in the final merge of subdomains (keeps the lowest tag for shared elements)
138 --rebuild_ensight_parts (-e ) :
139 Builds ensight geom file with parts
141 --tetmesh_args str (-G str) :
142 Arguments to pass to Tetmesh during cutting process
149 <b>Advanced ghs3d Parameters (through tepal's --tetmesh_args)</b> - type "ghs3d -h" in a Terminal. <p>
152 myname@myhost > ghs3d -h
155 /export/home/myname/ghs3d-4.0/DISTENE/Tools/TetMesh-GHS3D4.0/bin/Linux/ghs3dV4.0
156 [-u] [-m memory>] [-M MEMORY] [-f prefix] [-v verbose]
157 [-c component] [-p0] [-C] [-E count] [-t] [-o level]
158 [-I filetype] [-a/-b] [-O n m]
162 -u (-h) : prints this message.
164 -m memory : launches the software with memory in Megabytes.
165 The default value of this parameter is 64 Megabytes and its
166 minimum value is 10 Megabytes.
167 It is also possible to set this parameter with the
168 environment variable GHS3D_MEMORY by means of an operation
170 setenv GHS3D_MEMORY memory,
171 the value specified in the command line has the priority on
172 the environment variable.
174 -M MEMORY : provides the automatic memory adjustment feature.
175 If MEMORY (in Megabytes) is equal to zero, the size of the work space is
176 calculated from the input. If MEMORY is not equal to
177 zero, the software starts with MEMORY amount of work space.
178 The software reallocates memory as necessary.
179 The start value of MEMORY can range from 0 to 64 Megabytes,
180 the maximum depends on -m option and the actual memory available.
182 -f prefix : defines the generic prefix of the files.
184 -v verbose : sets the output level parameter (the verbose parameter
185 must be in the range 0 to 10).
187 -c component : chooses the meshed component. If the parameter is
188 0, all components will be meshed, if
189 1, only the main (outermost) component will be meshed
191 -p0 : disables creation of internal points.
193 -C : uses an alternative boundary recovery mechanism. It should be used only
194 when the standard boundary recovery fails.
196 -E count : sets the extended output for error messages. If -E is used,
197 the error messages will be printed, it is possible
198 to indicate the maximum number of printed messages between 1 and 100.
200 -t : generates an error file prefix.Log
202 -o level : sets the required optimisation level.
203 Valid optimisation levels are:
204 none, light, standard or strong,
205 with increase of "quality vs speed" ratio.
207 -I filetype : defines the input mesh format as follows:
208 -IP input files are ascii files, named prefix.points
209 and prefix.faces - this is the default type of files
210 -IPb input files are binary files, named prefix.pointsb
212 -IM input file is ascii file, named prefix.mesh
213 where prefix is defined with -f option
215 -a/-b : selects the output file type:
216 -a for ascii (the default) and
219 -On : saves a NOPO file in addition. NOPO is the mesh data
220 structure of the Simail and Modulef software packages.
221 -Om : saves a mesh file in addition.
222 -Omn : saves both NOPO and mesh files.
224 ==============================================================================
225 TETMESH-GHS3D SOFTWARE 4.0-3 (December, 2006)
227 COPYRIGHT (C)1989-2006 INRIA ALL RIGHTS RESERVED
228 ==============================================================================
230 Phone: +33(0)1-69-26-62-10 Fax: +33(0)1-69-26-90-33
231 EMail: support@distene.com )
236 <h1>Saving user's preferred GHS3DPRL Advanced Parameters</h1><br>
237 GHS3DPRL Plugin launches standalone binary executable tepal2med.<br>
238 You may rename tepal2med as tepal2med.exe for example, and replace
239 tepal2med by a shell script at your convenience to overriding parameters.<br>... or else $PATH modification... .<br>Idem for tepal.<br><br>
241 <b>Advanced tepal2med Parameters</b> - overriding parameter deletegroups<p>
245 #script tepal2med overriding parameter deletegroups
246 #we have renamed binary executable tepal2med as tepal2med.exe
247 #echo tepal2med initial parameters are $1 $2 $3 $4 ... or $*
250 tepal2med.exe $* --deletegroups="(\bAll_Nodes|\bAll_Faces)"
257 <b>Advanced tepal Parameters</b> - overriding parameter component of ghs3d (to mesh holes). <p>
261 #script tepal overriding parameter component of tetmesh-ghs3d
262 #we have renamed binary executable tepal as tepal.exe
264 #optionnaly we could set licence only for us
265 DISTENE_LICENSE_FILE="Use global envvar: DLIM8VAR"
266 DLIM8VAR="dlim8 1:1:29030@is142356/0016175ef08c::a1ba1...etc...e19"
267 SIMULOGD_LICENSE_FILE=29029@is142356
269 tepal.exe $* --tetmesh_args "-c 0"
276 <b>Advanced tepal Parameters</b> - overriding launching tepal on other host. <p>
280 #script tepal overriding launching tepal on other host (tepal run 64 bits only)
281 #we have renamed binary executable tepal as tepal.exe
282 #common file system (same path) otherwise scp... on input or result files
283 #ssh -keygen -t rsa done and files id_rsa et id-rsa.pub move in ~/.ssh
285 #example of typical command
286 #tepal -f /home/myname/tmp/GHS3DPRL -n 4 > /home/myname/tmp/tepal.log
287 #echo parameters $1 $2 $3 $4 ... or $*
289 #tepal licence ought to be known on otherhost
290 ssh otherhost "tepal.exe $* > /home/myname/tmp/tepal.log"
293 #ssh otherhost "tepal.exe $* --tetmesh_args \"-c 0\"" > /home/myname/tmp/tepal.log
299 <h1>TUI use.</h1><br>
303 <b>example ex30_tepal.py.</b><p>
324 base = geompy.MakeVertex(0, 0, 0)
325 direction = geompy.MakeVectorDXDYDZ(0, 0, 1)
327 cylinder = geompy.MakeCylinder(base, direction, radius, height)
329 geompy.addToStudy(cylinder, "Cylinder")
331 # Define a mesh on a geometry
332 # ---------------------------
334 m = smesh.Mesh(cylinder)
336 # 2D mesh with BLSURF
337 # -------------------
339 algo2d = m.Triangle(smesh.BLSURF)
341 algo2d.SetPhysicalMesh(1)
344 algo2d.SetGeometricMesh(0)
349 algo3d = m.Tetrahedron(smesh.GHS3DPRL)
351 algo3d.SetMEDName(results)
353 algo3d.SetBackground(False)
354 algo3d.SetKeepFiles(False)
355 algo3d.SetToMeshHoles(True)
365 if os.access(results+".xml", os.F_OK):