[Paraview] Paraview v5.1.2: SurfaceLIC & software rendering issues

[Albina, Frank]

Hi Ken!

Sure will do. I’ll come back to you asap with a self-contained test loop using your shuttle data.

Regards,

Frank.

From: Ken Martin [mailto:ken.martin at kitware.com]
Sent: Mittwoch, 28. September 2016 17:20
To: Albina, Frank
Cc: paraview at paraview.org; Del Citto, Francesco
Subject: Re: [Paraview] Paraview v5.1.2: SurfaceLIC & software rendering issues

Running from the GUI with mpi and 2 nodes seems to maintain the background on my quick tests. Could you update your script to use the shuttle dataset? I included a copy of that data on this email. That would make it easier to debug.

Thanks
Ken



On Mon, Sep 26, 2016 at 4:55 AM, Albina, Frank <frank.albina at sauber-motorsport.com<mailto:frank.albina at sauber-motorsport.com>> wrote:
Dear all,

I have downloaded from the paraview.org<http://paraview.org> the latest binaries for Linux of ParaView v5.1.2. My main purpose is to make use of ParaView with software rendering in a clustered environment without GPU and, as such, I have been going through my small benchmark on a generic F1 car.

This what I have found so far when generating a SurfaceLIC representation on the whole car surface in batch mode.

Using pvbatch –mesa-llvm works fine. This is one of the produced images for reference:
[cid:image001.jpg at 01D219AE.D5764EB0]
Using 4 cores to perform the same task (with the same script) with mpiexec –np 4 pvbatch --mesa-llvm shows a good speed-up but the background is black instead of white (although view.Backgound = [1,1,1] is set explicitely), as shown hereafter:

[cid:image002.jpg at 01D219AE.D5764EB0]

On the same server (Intel Xeon ES-2650 v3), the CPU is AVX2 capable, so I tried also the same script with pvbatch --mesa-swr-avx2. The image background is corrupted with leftover frames apparently, as shown hereafter:

[cid:image003.jpg at 01D219AE.D5764EB0]
Was this behavior to be expected?

Please let me know if there is any interest in providing with my benchmark.

Frank Albina


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