[Paraview] Please help to understand the live mode of Catalyst

[Andy Bauer]

Hi,

It may be in certain cases the image is sent from the simulation to the
client, I'm not sure about that. If a filter on the client takes that input
then the entire data set has to be downloaded to the client. The way it is
designed to work is that the user can modify the pipeline on both the
client and the simulation's pipeline.

Regards,
Andy


On Tue, Oct 22, 2013 at 10:46 AM, Junyi Han <demonmerlin at gmail.com> wrote:

> Hi Andy,
>
> I'm still confused about the download part.
> The rendered image is sent from the simulation to the client. Then, if I
> click on the icon (circle with triangle), the rendered image will be copied
> to my local pipeline (like builtin) and I can operate on this local
> pipeline such as adding filter, is that right?
>
> Best wishes,
> Junyi Han
>
>
> 2013/10/21 Andy Bauer <andy.bauer at kitware.com>
>
>> Hi,
>>
>> The Catalyst live mode is still beta functionality. The client does
>> connect to the Catalyst enabled simulation directly. You have to keep in
>> mind that there's a pipeline on the server and a separate pipeline on the
>> client. Essentially the pipeline on the client uses the requested filter
>> output from the server and uses that as the source. The pipeline on the
>> server branches of the 'catalyst:' server (instead of the eyeball it will
>> have a circle with an intersecting triangle on the left). You can click on
>> that icon to download that data to your client. You should be able to add
>> in other filters on the Catalyst server by selecting the desired filter to
>> chain off of in the Pipeline Browser and then choosing the desired filter
>> in the menu.
>>
>> If I remember correctly, the initial pipeline helps set up the
>> environment on the Catalyst server to work with. For big simulations, you
>> wouldn't want to download the full data set to the client anyway.
>>
>> Regards,
>> Andy
>>
>>
>>
>>
>> On Mon, Oct 21, 2013 at 12:50 PM, Junyi Han <demonmerlin at gmail.com>wrote:
>>
>>> Dear all,
>>>
>>> I'm new to Catalyst. I'm wondering how does the live mode work.
>>> In my understanding, the simulation is modified to call Catalyst library
>>> which can get pre-processed information from a python script file. The
>>> simulation also connects to paraview client directly. It means that there
>>> is no pvserver, instead, the simulation calls Catalyst library which based
>>> on paraview lib and VTK lib to process data like pvserver, is that correct?
>>> But in live mode, if I modify the paraview pipeline through the Paraview
>>> client, for example, add a filter, how to inform the simulation that the
>>> pipeline has been changed? If the simulation can be noticed of the modified
>>> pipeline, why do we need to create a python script to describe the pipeline
>>> at the beginning?
>>>
>>>
>>> Best wishes,
>>> Junyi Han
>>>
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