[Paraview] ParaView + Catalyst - effort estimation (UNCLASSIFIED)

[Su, Simon M CTR USARMY ARL (US)]

Classification: UNCLASSIFIED
Caveats: NONE

Hi Andy,

Thanks for your insight....  I will know more on the complexity when I dig 
more into it.

Thanks
-simon

-----Original Message-----
From: Andy Bauer [mailto:andy.bauer at kitware.com]
Sent: Monday, August 04, 2014 9:14 PM
To: tim gallagher
Cc: Su, Simon M CTR USARMY ARL (US); paraview at paraview.org
Subject: Re: [Paraview] ParaView + Catalyst - effort estimation (UNCLASSIFIED)

Hi Simon,


It can be a fairly wide range to do that. I was able to do it for Chris Kees' 
Proteus code in an hour. But he already had VTK data structures created for 
his own internal in situ stuff and it was with Python so even compilation 
issues were very easy (also, we sat down together to do it so all of the 
knowledge was there). I generally try to allocate two weeks to do that 
assuming that I'll do a decent amount of the work figuring out the simulation 
code on my own as well as waiting some for answers to emails. If the code 
isn't "cmakeified" then it also adds a bit of time to it as well. If you're 
not that familiar with the simulation code I suggest focusing on the part of 
the code that writes out the simulation information (grid and fields) to 
files. That generally has all of the information you need to know in order to 
create the VTK data structures to represent their data structures.

Regards,
Andy



On Mon, Aug 4, 2014 at 4:41 PM, Tim Gallagher <tim.gallagher at gatech.edu> 
wrote:


	Hi Simon,

	I've gone through the process myself and it actually was not that painful, 
but how long it takes will depend on how familiar you are with VTK already. 
It's almost trivial if your code's data structures already use VTK. If they 
don't, then it's a matter of translating your data into the VTK data 
structures which isn't too bad in Python.

	Our code is in Fortran and is a parallel, finite volume, structured, 
multi-block code. So in some ways it's a bit easier to define the data 
structures in VTK as they are structured and I don't need to worry about 
connectivity. I wrote the wrappers and interface code in less than a week with 
no prior knowledge of VTK but a very strong desire to make it work :) This was 
a few years back when the documentation on Catalyst wasn't very mature so it 
was probably harder than it would have been now.

	I can't be any more specific or give you advice on how long it will take with 
your code, but it was much easier than I expected it to be when I did it.

	Tim


	----- Original Message -----
	From: "Simon M CTR USARMY ARL Su (US)" <simon.m.su.ctr at mail.mil>
	To: paraview at paraview.org
	Sent: Monday, August 4, 2014 4:29:52 PM
	Subject: [Paraview] ParaView + Catalyst - effort estimation (UNCLASSIFIED)

	Classification: UNCLASSIFIED
	Caveats: NONE

	Hello,

	From a tutorial I attended on ParaView + Catalyst, I sort of get the idea of
	all the parts involved. However, from effort point of view, on an average
	case, how many man hours would be estimated to develop a Catalyst Bridge and
	get it to work in ParaView for a homegrown discrete element method code
	written in python with some functionality in wrapped fortran, but the data
	needed for visualization is exposed to python? Just a ballpark guess
	(min/max would be nice). I want to know how big of a project I am getting
	myself into... :)

	Thanks
	-simon

	Classification: UNCLASSIFIED
	Caveats: NONE




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Classification: UNCLASSIFIED
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