[Paraview] Installing ParaView 4.0.1 on Nodes For Rendering Frames -Slow Rendering w/ Python

[Noah Taylor]

Utkarsh,

I appreciate your response. I spent this past week first trying to get the
X Server running and it seems it never worked so I gave up on that and have
turned to building ParaView with the Llvm CPU Rendering option enabled.
It's taken me a while but I believe I have all the dependencies installed
including OSMesa 9.2.2 but I don't know what to make of the CMakeLists.txt
file. The wiki isn't too clear on this part and I have no experience with
CMake.

I copied the CMakesList.txt that comes with the source files for
ParaView4.0.1 to a new source directory and have also created a new
directory for my build and followed the advice to point the ccmake to the
source while in my new build directory. I get a EMPTY CACHE message

The following ling under the Configuring ParaView for use with OSMesa,
there is a script but I don't know what to do with that. I assumed I would
need to apply it to the CMakeList.txt but the variables seem different than
what I am seeing in the second link below in the Configure ParaView With
CMake on Unix - the image in that section shows different variables and no
description on how to apply the Llvm stuff or it may and it's going over my
head.
http://www.paraview.org/Wiki/ParaView/ParaView_And_Mesa_3D
http://www.paraview.org/Wiki/ParaView:Build_And_Install

Could you give me some advice on how to use CMake so I can get a version of
Paraview with OSMesa Llvm as the source for rendering? Appreciate any
advice!

Thanks!
Noah

On Wed, May 20, 2015 at 8:07 AM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> Are you using x forwarding when you connect to these machines? What is
> localhost:10.0 display to? Try running some other X-based application
> like gvim, or glxgears etc. and see where that window pops up. If it's
> popping up on your laptop, you're using X forwarding. Every render on
> the server will then be forwarding X calls to your laptop and that
> would explain the slow down.
>
> If there an X server running on the "remote site"? If so, check with
> your sysadmin to get access to that X if possible. If not, you'll need
> to recoming with OSMesa, I am afraid.
>
> Utkarsh
>
> On Wed, May 20, 2015 at 1:07 AM, Noah Taylor <haonrolyat at gmail.com> wrote:
> > Hello,
> >
> > I am using ParaView 4.0.1 since I developed a python script for
> > interpretation on this version. I am able to run ParaView fine on my
> local
> > Ubuntu Desktop. I have setup an EC2 AWS instance both a GPU and a CPU
> > instance both running Ubuntu but they both are giving me the same
> problem of
> > very very slow rendering for each time step with the offscreen rendering
> > option turned on. I also run into this problem on a Unix supercomputer I
> am
> > trying to run my code on. On my local machine it takes less than a second
> > for each time step I am rendering to be outputted with the same settings
> and
> > I am not spinning anything  up like pvserver - on the node instances I
> have,
> > it is taking well around a minute or probably more for each frame.
> >
> > I have read through a lot of similar issues and the documentation for X
> > connections but I am not having any luck. The default DISPLAY is set to
> the
> > localhost:10.0 and I have tried changing that to the localhost:0.0 but it
> > gives me the bad -X connection error. From there, I followed previous
> > mailing list instructions and tried spinning up the pvserver (I don't
> know
> > why since I am not trying to serve anything just render frames) but I
> get an
> > error with the shared libraries that they're too short. I am using the
> > default downloadable version of 4.0.1 since I want to try and keep this
> as
> > simple as possible but I don't know if these have the mpi turned on by
> > default. Has anybody ran into this Bad X Connection issue and found an
> easy
> > way around it besides messing with the OSMesa and recompiling? I'd really
> > appreciate any pointers :)
> >
> > Thanks,
> > Noah
> >
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