[Paraview] [EXTERNAL] pvserver MPI issue

Mon Oct 16 16:41:57 EDT 2017

Thanks Joachim.
It was indeed an issue of not using the right mpiexec.

On Mon, Oct 16, 2017 at 10:46 AM, Joachim Pouderoux <
joachim.pouderoux at kitware.com> wrote:

> To be more specific, you have to run something like:
>   $ /pathToPV5.0/lib/paraview-5.0/mpiexec -np 32 /pathToPV5.0/bin/pvserver
>
> Joachim
>
> *Joachim Pouderoux*, PhD
>
> *Technical Expert - Scientific Computing Team*
> *Kitware SAS <http://www.kitware.fr>*
>
>
> 2017-10-16 13:27 GMT-04:00 Joachim Pouderoux <
> joachim.pouderoux at kitware.com>:
>
>> Again Quentin, which "mpiexec" program are you using?
>> The parallel PVServer is supposed to open just one socket to accept
>> client's connection. Otherwise it just means that the MPI context is not
>> correctly setup.
>> It occures if PVServer has not been built with MPI support OR you do not
>> use the mpiexec that correspond to the MPI library used to compile PV.
>>
>> Joachim
>>
>> *Joachim Pouderoux*, PhD
>>
>> *Technical Expert - Scientific Computing Team*
>> *Kitware SAS <http://www.kitware.fr>*
>>
>>
>> 2017-10-16 13:23 GMT-04:00 Quentin d'Avout <quentin at arrivo-loop.com>:
>>
>>> Hi Joachim,
>>>
>>>
>>>
>>> I’m running:
>>>
>>> mpirun -np 32 pvserver --server-port=%PV_SERVER_PORT%
>>>
>>> per paraView’s website. Launching the pvserver is not the issue,
>>> connecting to it in the paraview GUI is.
>>>
>>> Thanks.
>>>
>>>
>>>
>>>
>>>
>>> *From:* Joachim Pouderoux [mailto:joachim.pouderoux at kitware.com]
>>> *Sent:* Monday, October 16, 2017 10:08 AM
>>> *To:* Quentin d'Avout <quentin at arrivo-loop.com>
>>> *Cc:* Utkarsh Ayachit <utkarsh.ayachit at kitware.com>; ParaView <
>>> paraview at paraview.org>
>>>
>>> *Subject:* Re: [Paraview] [EXTERNAL] pvserver MPI issue
>>>
>>>
>>>
>>> Quentin,
>>>
>>> Which `mpiexec` command are you using?
>>>
>>> You have to use the one provided with paraview, not the one of your
>>> system which might be incompatible.
>>>
>>> Best,
>>>
>>> Joachim
>>>
>>>
>>> *Joachim Pouderoux*, PhD
>>>
>>> *Technical Expert - Scientific Computing Team*
>>> *Kitware SAS <http://www.kitware.fr>*
>>>
>>>
>>>
>>> 2017-10-16 13:03 GMT-04:00 Quentin d'Avout <quentin at arrivo-loop.com>:
>>>
>>> Hi Utkarsh,
>>>
>>> I did not recompile paraView myself, and using version
>>> ParaView-5.0.1-Qt4-OpenGL2-MPI-Linux-64bit
>>>
>>> I assumed that because the D3 fitler is available and that the about
>>> menus is stating "MPI enabled", this version was MPI enabled. Am I wrong
>>> tho?
>>>
>>> [image: Inline image 1]
>>>
>>> Thanks
>>>
>>> Quentin
>>>
>>>
>>>
>>> On Sat, Oct 14, 2017 at 5:23 PM, Utkarsh Ayachit <
>>> utkarsh.ayachit at kitware.com> wrote:
>>>
>>> Quentin,
>>>
>>>
>>>
>>> Each pvserver rank trying to connect the same socket is the classic
>>> symptom of paraview not build with MPI. Mind attaching your CMakeCache.txt?
>>>
>>>
>>>
>>> Utkarsh
>>>
>>>
>>>
>>> On Sat, Oct 14, 2017 at 8:05 PM, Quentin d'Avout <
>>> quentin at arrivo-loop.com> wrote:
>>>
>>> Thanks Utkarsh.
>>>
>>> Yes, I’ve checked both.
>>>
>>>
>>>
>>> Quentin d’Avout | Aerodynamics
>>>
>>> [image: Arrivo Loop] <http://www.arrivo-loop.com/>
>>>
>>>
>>>
>>> *From:* Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
>>> *Sent:* Saturday, October 14, 2017 4:55 PM
>>> *To:* Quentin d'Avout <quentin at arrivo-loop.com>
>>> *Cc:* Scott, W Alan <wascott at sandia.gov>; ParaView <
>>> paraview at paraview.org>
>>> *Subject:* Re: [Paraview] [EXTERNAL] pvserver MPI issue
>>>
>>>
>>>
>>> Are you sure you ParaView is built with MPI support enabled? If so, are
>>> you sure you're using the correct mpirun executable that goes with the MPI
>>> implementation you used to build ParaView?
>>>
>>>
>>>
>>> Utkarsh
>>>
>>>
>>>
>>> On Sat, Oct 14, 2017 at 2:49 PM, Quentin d'Avout <
>>> quentin at arrivo-loop.com> wrote:
>>>
>>> Actually, it turns out that you have to specifically tell pvserver to
>>> use different ports for every process:
>>>
>>>
>>>
>>> mpirun -np 32 pvserver --server-port=%PV_SERVER_PORT%
>>>
>>>
>>>
>>> But I’m now having issues connecting to all of these processes from the
>>> paraView GUI/connect window. Can’t seem to be able to specify more than one
>>> port at once…
>>>
>>>
>>>
>>> Anybody knows the trick?
>>>
>>> Thanks again
>>>
>>>
>>>
>>> *From:* Scott, W Alan [mailto:wascott at sandia.gov]
>>> *Sent:* Friday, October 13, 2017 6:40 PM
>>>
>>>
>>> *To:* Quentin d'Avout <quentin at arrivo-loop.com>; paraview at paraview.org
>>> *Subject:* Re: [EXTERNAL] [Paraview] pvserver MPI issue
>>>
>>>
>>>
>>> All I have is back to the firewall?
>>>
>>>
>>>
>>> *From: *Quentin d'Avout <quentin at arrivo-loop.com>
>>> *Date: *Friday, October 13, 2017 at 4:39 PM
>>> *To: *W Scott <wascott at sandia.gov>, "paraview at paraview.org" <
>>> paraview at paraview.org>
>>> *Subject: *RE: [EXTERNAL] [Paraview] pvserver MPI issue
>>>
>>>
>>>
>>> Thanks Scott.
>>>
>>> Didn’t do the trick tho.
>>>
>>> Other ideas?
>>>
>>>
>>>
>>> *From:* Scott, W Alan [mailto:wascott at sandia.gov]
>>> *Sent:* Friday, October 13, 2017 2:15 PM
>>> *To:* Quentin d'Avout <quentin at arrivo-loop.com>; paraview at paraview.org
>>> *Subject:* Re: [EXTERNAL] [Paraview] pvserver MPI issue
>>>
>>>
>>>
>>> Not saying I’m right here, but it looks like multiple versions of
>>> ParaView are tying up the socket.  Do a ps -ef on paraview, client side,
>>> and kill them.  Do the same on the server side.  Then, try again.
>>>
>>>
>>>
>>> Alan
>>>
>>>
>>>
>>> *From: *ParaView <paraview-bounces at paraview.org> on behalf of Quentin
>>> d'Avout <quentin at arrivo-loop.com>
>>> *Date: *Friday, October 13, 2017 at 3:10 PM
>>> *To: *"paraview at paraview.org" <paraview at paraview.org>
>>> *Subject: *[EXTERNAL] [Paraview] pvserver MPI issue
>>>
>>>
>>>
>>> Hi All,
>>>
>>>
>>>
>>> my issue is when I hit:
>>>
>>>
>>>
>>> mpirun -np 32 pvserver # with or without --mpi option
>>>
>>>
>>>
>>> I get :"vtkServerSocket (0x23fb3e0): Socket error in call to bind.
>>> Address already in use."
>>>
>>> and: "vtkTCPNetworkAccessManager (0x1879510): Failed to set up server
>>> socket."
>>>
>>>
>>>
>>> as if my paraView was compiled with the mpi capability off. But it is on
>>> (D3 filter available, "about" windows also says so).
>>>
>>>
>>>
>>> pvserver in serial works just fine.
>>>
>>> Could have been the ufw firewall blocking connections, but it is
>>> disabled.
>>>
>>> Ubuntu 17.04.
>>>
>>>
>>>
>>> Thanks in advance for your help.
>>>
>>> Quentin
>>>
>>>
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>>> Visit other Kitware open-source projects at
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>>>
>>
>>
>

-- 

Quentin d’Avout | Aerodynamics
[image: Arrivo Loop] <http://www.arrivo-loop.com/>
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