[Paraview] Correctly Parallel Processing of OpenFoam results using pvserver

Fri Oct 2 10:16:11 EDT 2015

On Fri, Oct 2, 2015 at 8:05 AM, David E DeMarle <dave.demarle at kitware.com>
wrote:

> Hmmm,
>
> Isn't paraFoam just ParaView as packaged into the OpenFOAM distribution?
> If so, the next time OpenFOAM updates its version it should get ParaView
> 4.4 (along with whatever patches FOAM adds to it, like their version of the
> reader).
>

I believe so. I have never bothered using paraFoam. Paraview's native
reader now works great...esp. in parallel and seems to keep getting better
with time.

ganesh

>
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Fri, Oct 2, 2015 at 9:10 AM, <ronald.fowler at stfc.ac.uk> wrote:
>
>> Hi,
>>
>> I did try to determine the differences between the ParaView built in
>> reader and the one supplied by OpenFOAM, but could not find any
>> documentation on this. I do know that the ParaView built in one has been
>> improved in recent releases and seems to do all that I require of it. I
>> tend to use RHEL6 systems and I believe that the OpenFOAM only support an
>> older version of ParaView on these systems, so I rarely use paraFOAM.
>>
>> I tend to use ParaView 4.4 but have not done any timings with it yet.
>> There is also a version of 4.4 with the OpenGL 2 backend that may be faster.
>>
>> Ron
>>
>>
>>
>>
>>
>>
>>
>> *From:* Leonard Cassady [mailto:lenny at intuitivemachines.com]
>> *Sent:* 02 October 2015 13:27
>> *To:* Fowler, Ronald (STFC,RAL,SC)
>>
>> *Cc:* paraview at paraview.org
>> *Subject:* Re: [Paraview] Correctly Parallel Processing of OpenFoam
>> results using pvserver
>>
>>
>>
>> Hi,
>>
>>
>>
>>   I didn't realize that there are 2 different extensions for OpenFOAM
>> projects.  I also didn't realize that Paraview had a native OpenFoam
>> reader.  What functionality (normally supplied by OpenFOAM paraFoam ) is
>> lost when using Paraview without starting with paraFoam?  I'm asking
>> because I've heard that ParaView 4.4 is extremely fast and would like to
>> test it out with OpenFoam files but not paraFoam.
>>
>>
>>
>> Thanks
>>
>>
>>
>> On Thu, Oct 1, 2015 at 7:44 PM, <ronald.fowler at stfc.ac.uk> wrote:
>>
>> Hi,
>> It is simple to create a .foam file; just do "touch xxx.foam" in the
>> working directory. Then point ParaView at that file and it will use the
>> builtin openFoam reader which should offer the reconstructed/decomposed
>> option. The empty file just tells ParaView which reader to use based on the
>> extension.
>> Ron
>>
>>
>> ________________________________
>> From: ParaView [paraview-bounces at paraview.org] on behalf of Leonard
>> Cassady [lenny at intuitivemachines.com]
>> Sent: 30 September 2015 21:50
>> To: David E DeMarle
>> Cc: paraview at paraview.org
>> Subject: Re: [Paraview] Correctly Parallel Processing of OpenFoam results
>> using pvserver
>>
>> David,
>>
>>    I do not have a chooser for "case type".  I found a web page that
>> shows the "case type" chooser.  They were opening a .foam file.  I have
>> .OpenFOAM case.
>>
>>    Should I consider converting the foam to VTK?
>>
>>
>>
>> On Wed, Sep 30, 2015 at 2:59 PM, David E DeMarle <
>> dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>> wrote:
>> Looping the list back in to the thread.
>>
>> Look on the properties panel when you open the file and before you hit
>> "Apply" look for a chooser for "Case Type". The default is "Reconstructed
>> Case" so change it to "Decomposed Case".
>>
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 21 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-881-4909<tel:518-881-4909>
>>
>> On Wed, Sep 30, 2015 at 3:51 PM, Leonard Cassady <
>> lenny at intuitivemachines.com<mailto:lenny at intuitivemachines.com>> wrote:
>> Dave,
>>
>> I don't know how to switch to decomposed type.
>>
>> Thanks,
>>
>>
>> On Wed, Sep 30, 2015 at 2:47 PM, David E DeMarle <
>> dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>> wrote:
>> As I recall, reconstructed means that the root node does all the work.
>> Switch to decomposed type in the reader and let us know how it works then.
>>
>> thanks
>>
>>
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 21 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-881-4909<tel:518-881-4909>
>>
>> On Wed, Sep 30, 2015 at 3:35 PM, Leonard Cassady <
>> lenny at intuitivemachines.com<mailto:lenny at intuitivemachines.com>> wrote:
>> I'm attempting to use pvserver to accelerate the post-processing of my
>> openfoam solution. I have a 48 core machine. I have correctly installed and
>> compiled a parallel copy of paraview 4.1.0 with OpenFOAM 2.4.x. If I open a
>> simple .obj file I can see that different parts of the surface are rendered
>> using different processors. I can also see that the memory is shared among
>> the parallel processes.
>>
>> When I open a reconstructed openFOAM solution with 20 million cells with
>> paraview connected to 40 process pvserver, the image seems to be rendered
>> (or processed) with only 1 processor. Is there a step that I'm missing to
>> parallelize the reconstructed Openfoam data files for rendering?
>>
>> --
>> Leonard Cassady PhD
>> Senior Development Engineer
>> Intuitive Machines
>> Cell: 281-755-2553<tel:281-755-2553>
>>
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>>
>>
>>
>>
>> --
>> Leonard Cassady PhD
>> Senior Development Engineer
>> Intuitive Machines
>> Cell: 281-755-2553<tel:281-755-2553>
>>
>>
>>
>>
>>
>> --
>> Leonard Cassady PhD
>> Senior Development Engineer
>> Intuitive Machines
>> Cell: 281-755-2553
>>
>>
>>
>>
>>
>> --
>>
>> Leonard Cassady PhD
>>
>> Senior Development Engineer
>>
>> Intuitive Machines
>>
>> Cell: 281-755-2553
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
>>
>>
>
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-- 
ganesh
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