[petsc-users] Question about dm_view

[Barry Smith]

On May 28, 2014, at 2:13 PM, Sun, Hui <hus003 at ucsd.edu> wrote:

> Do I have to turn it on thru ./configure and then make everything again? 

  No, just run the program with the option. For example if there is printed -dm_view_draw <false> then run the program with -dm_view_draw true

Barry

> 
> From: Matthew Knepley [knepley at gmail.com]
> Sent: Wednesday, May 28, 2014 12:10 PM
> To: Sun, Hui
> Cc: Barry Smith; petsc-users at mcs.anl.gov
> Subject: Re: [petsc-users] Question about dm_view
> 
> On Wed, May 28, 2014 at 1:28 PM, Sun, Hui <hus003 at ucsd.edu> wrote:
> Thanks Barry for quick reply. After I type ./ex5 -help | grep view, it comes out a list of options related to _view, all of which have the tag <FALSE>, what does this mean?
> 
> The <FALSE> is the current value. They are all false because you have not turned them on. IF you are using the release version,
> the viewing option is -da_view. The -dm_view is the new version which we are about to release.
> 
>   Thanks,
> 
>     Matt
>  
> ________________________________________
> From: Barry Smith [bsmith at mcs.anl.gov]
> Sent: Wednesday, May 28, 2014 11:25 AM
> To: Sun, Hui
> Cc: petsc-users at mcs.anl.gov
> Subject: Re: [petsc-users] Question about dm_view
> 
>   Run as./ex5 -help | grep view to see the possibilities.  It depends on PETSc version number. When using the graphics want you generally want a -draw_pause -1 to stop that program at the graphic otherwise it pops up and disappears immediately.
> 
>    Barry
> 
> 
> On May 28, 2014, at 1:21 PM, Sun, Hui <hus003 at ucsd.edu> wrote:
> 
> > Hello, I'm new to PETSc. I'm reading a tutorial slide given in Imperial College from this site: Slides. In slide page 28, there is description of viewing the DA. I'm testing from my MAC the same commands listed on that page, for example, ex5 -dm_view, nothing interesting happen except the Number of Newton iterations is outputted. I'm expecting that the PETSc numbering would show up as a graphic window or something. Can anyone tell me what's missing here? Thank you!   ( Hui )
> 
> 
> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener