[Paraview] Trying to run the servers on parallel

[Sebastien Jourdain]

Hi Kevin,

What reader are you using to read your data ?
Moreover, do you have a descent graphic card with the correct driver
installed ? On Linux, this is more than important to take the latest NVidia
driver and don't use the system package version.

Seb



On Wed, Dec 12, 2012 at 12:36 PM, Kevin Hackel <kevin.hackel at online.de>wrote:

>   Hi Sebastien,
>
> There is a normal ethernet cable with 1 GB/s between server and computer.
> The same data was created with different number of processes, for example
> 4 times 330 megabyte or 8 times 165 megabyte, so that the data as a whole
> is 1320 megabyte big and it is an unstructered data.
> Well I had not the time to test it again, but I will do.
>
> But what I haven’t understand is the fact that when I load this data and
> want to change the filter from outline to wireframe or surface than my
> Paraview crashed after one minute or so. When I load a single part of the
> data (with 165MB or 330MB) I could change the filter but it needs very long
> to do that.
> When I first use isosurfaces on the data than I have no problem to view
> the data or to move it around. Where could be the problem?
>
> Kevin
>
>  *From:* Sebastien Jourdain <sebastien.jourdain at kitware.com>
> *Sent:* Tuesday, December 04, 2012 2:07 PM
> *To:* Kevin Hackel <kevin.hackel at online.de>
> *Cc:* paraview at paraview.org
> *Subject:* Re: [Paraview] Trying to run the servers on parallel
>
> Hi Kevin,
>
> How good is your network between the remote PC that execute pvserver and
> your client computer that run paraview ?
> How big is your data ?
> What type of data is that ? Structured or unstructured ?
> Did you try to run pvserver on that very same machine without using MPI ?
> Does that change anything ?
> Did you try to go in ParaView/Edit/Settings and compare "local rendering"
> vs "remote rendering" performance ?
>
> Seb
>
>
> On Mon, Dec 3, 2012 at 4:18 PM, Kevin Hackel <kevin.hackel at online.de>wrote:
>
>>   Hello community,
>>
>> This is my first e-mail to the mailing list, so I hope I do it right :-)
>> And sorry for my english, I try my best to make my mail understandable.
>> If you can I would be pleased if you answer in german. Also I want you to
>> know that I haven’t a great knowledge about informatics.
>>
>> Well I try to use Paraview on parallel, but I think it doesn’t work right
>> how I do it.
>> I use a remote PC on which I will run the Paraview client and a extern
>> server with up to 48 CPUs and good GPUs.
>> So I start the server using “mpirun –np ‘number’ ../pvserver” or “mpirun
>> –np ‘number’ ../pvserver –display localhost:0” (my Paraview is compiled
>> with openmpi on a linux system). Then I connect over the remote PC in
>> Paraview to this server (client/server mode).
>> It works, but not well. I’ve got test data (about 1GB) and it takes about
>> two minutes to change for example the filter from outline to wireframe.
>> Also when I want to move the image with drag and drop it takes about five
>> seconds to rerender it. I think for only 1GB it takes too long for doing
>> this.
>> Also I’m not sure if my server uses its GPUs or only its CPUs, I don’t
>> know how to find it out.
>> Would it be better to use my remote PC only as a display?
>> Could you tell me how Paraview scales with  the number of data sets and
>> number of processes. Should I use ‘x’ processes to load ‘x’ data sets? Or
>> is it better to use more processes than data sets (for example: Would it be
>> better to use 8 processes for loading 6 data sets than using 6 processes?)
>> Is there another way how I could start my server that it will work
>> better? Or what can I change that it will work better?
>>
>> I hope you can help me a little bit and give me tips how I should use
>> Paraview on parallel. Thanks.
>>
>>
>> Greetings,
>>
>> Kevin
>>
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