[Paraview] Rendering offscreen images from parallel simulation using Catalyst

[Jim.Eliot at awe.co.uk]

Good morning all,

I have experienced some problems when trying to render images in parallel from a multipiece dataset using ParaView Catalyst. It seems to work when I connect live using the ParaView client - I see the full mesh, and a plot of vtkCompositeIndex looks sensible.

However when I try to render out images, one render window appears on screen for each parallel process (in a stack). The windows appear to contain one chunk each. If I manually grab the windows and spread them out so that each is visible on screen, then chunk zero plots updates to include the whole dataset, i.e. it looks as if it is grabbing the data from the screen.

Is there a way to make ParaView Catalyst render offscreen?

I am using ParaView 4.4.0 on my workstation (which has a graphics card) built from source using Superbuild without mesa.

When I run on a remote platform (no graphics cards) where I build ParaView using osmesa, the images render without creating a window and contain all the chunks.

Should I be using a separate ParaView build for my Catalyst simulations that is built with osmesa?

Apologies if there is not much to go on here - it would be tricky to share the simulation code and the catalyst adaptor code that I am using. If more information is needed, I'll try to put together a representative simulation/adaptor.

Thanks everyone,
Jim


Jim Eliot
High Performance Computing Group
AWE, Aldermaston, Reading, RG7 4PR





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