[Getdp] Antwort: Re: zip getdp solution files
David Colignon
david.colignon at ulg.ac.be
Tue Dec 20 15:43:02 CET 2016
On 16/12/16 07:03, m.schoening at e-und-a.ch wrote:
> Hi,
>
> thanks for the information and you are right, there is as binary format in getdp. In my tests, it reduces the file size to around 70% (perhaps, I did something
> wrong, I am speaking of element solution files) of the orignal value (it saves 30% traffic) and you are right, gmsh is able to handle this binary files. I would
> be happy, if the file size can be reduced even more.
>
> For example, trying "gzip -6" reduced the file size to around 20% (this saves 80% of the traffic) of the original value and several other languages (e.g.
> python) are able to handle this file format out of the box, so individual post processing procedures on getdp solution files can be adapted with minimal effort.
>
> Gmsh is able to read gzipped solution files, but not out of the box. Gmsh extracts the files on the hard disk (not in memory), so you have to clean the working
> directory manually afterwards.
Hi,
you can also try the "-v2" option of getdp:
Output options:
-bin create binary output files
-v2 create mesh-based Gmsh output files when possible
that could also reduce the size of your postpro files.
Regards,
Dave
>
> Best regards,
>
> ppa. Marc C. Schöning
> Dr.-Ing.
> Leiter Forschung & Entwicklung / Head of R&D
> Mitglied der Geschäftsleitung / Member of the Management
> ----------------------------------------------------
> e+a
> Elektromaschinen und Antriebe AG
> Bachstrasse 10
> 4313 Moehlin
> SWITZERLAND
> ----------------------------------------------------
> Phone +41 61 855 92 92
> Fax +41 61 855 92 99
> Mail m.schoening at e-und-a.ch
>
> http://www.e-und-a.ch <http://www.e-und-a.ch/>
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> "getdp" <getdp-bounces at ace20.montefiore.ulg.ac.be> schrieb am 15.12.2016 22:15:54:
>
>> Von: David Colignon <david.colignon at ulg.ac.be>
>> An: m.schoening at e-und-a.ch, getdp at onelab.info
>> Datum: 15.12.2016 22:16
>> Betreff: Re: [Getdp] zip getdp solution files
>> Gesendet von: "getdp" <getdp-bounces at ace20.montefiore.ulg.ac.be>
>>
>>
>> On 15/12/16 14:02, m.schoening at e-und-a.ch wrote:
>>
>> > Dear List,
>> >
>> > is there a "build in" way to work with zipped solution and mesh
>> files instead of the "standard" text files? I experience performance issues
>> > running getdp on several cluster nodes, which all write their
>> results on the same nfs network share.
>> >
>> > Additionally, it would be very helpfull, if gmsh could read such
>> zipped or binary files directly for postprocessing.
>>
>>
>> Hi,
>>
>> ace35:~ > ./getdp/BUILD/getdp --help
>>
>> GetDP, a General environment for the treatment of Discrete Problems
>> Copyright (C) 1997-2016 P. Dular and C. Geuzaine, University of Liege
>> Usage: ./getdp/BUILD/getdp [file] [options]
>> Processing options:
>> -pre 'Resolution' pre-processing
>> -cal processing
>> -pos 'PostOperation(s)' post-processing
>> -msh file read mesh (in msh format) from file
>> -gmshread file(s) read gmsh data (same as GmshRead in resolution)
>> -gmshtag tag(s) tag(s) associated to GmshRead data
>> -restart resume processing from where it stopped
>> -solve 'Resolution' same as -pre 'Resolution' -cal
>> -split save processing results in separate files
>> -res file(s) load processing results from file(s)
>> -name string use string as generic file name
>> -adapt file read adaptation constraints from file
>> -order num restrict maximum interpolation order
>> -cache cache network computations to disk
>> Linear solver options:
>> -solver file specify parameter file (default: solver.par)
>> -'Parameter' num override value of solver parameter 'Parameter'
>> Output options:
>> -bin create binary output files
>> #######################################################
>>
>>
>> And from http://getdp.info/doc/texinfo/getdp.html:
>>
>> GetDP can also read more recent versions of the ‘msh’ format (2.0
>> and above), as well as binary meshes. See the Gmsh documentation for more
>> information about these formats.
>>
>> Regards,
>>
>> Dave
>>
>> --
>> David Colignon, Ph.D.
>> 1er logisticien de recherche
>> Université de Liège
>> ACE - Applied & Computational Electromagnetics
>> Sart-Tilman B28
>> 10, Grande Traverse
>> 4000 Liège - BELGIQUE
>> Tél: +32 (0)4 366 37 32
>> http://www.ulg.ac.be/nic4
>>
>>
>> >
>> > Best regards,
>> >
>> > ppa. Marc C. Schöning
>> > Dr.-Ing.
>> > Leiter Forschung & Entwicklung / Head of R&D
>> > Mitglied der Geschäftsleitung / Member of the Management
>> > ----------------------------------------------------
>> > e+a
>> > Elektromaschinen und Antriebe AG
>> > Bachstrasse 10
>> > 4313 Moehlin
>> > SWITZERLAND
>> > ----------------------------------------------------
>> > Phone +41 61 855 92 92
>> > Fax +41 61 855 92 99
>> > Mail m.schoening at e-und-a.ch
>> >
>> > http://www.e-und-a.ch <http://www.e-und-a.ch/><http://www.e-und-a.ch/>
>> > ----------------------------------------------------
>> >
>> > CONFIDENTIALITY NOTICE
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