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visit-dav / visit

VisIt - Visualization and Data Analysis for Mesh-based Scientific Data
https://visit.llnl.gov
BSD 3-Clause "New" or "Revised" License
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Parallel Volume Rendering crash #19601

Open dpugmire opened 3 weeks ago

dpugmire commented 3 weeks ago

Describe the bug

I frequently get the following error when using the parallel compositing volume renderer in version 3.3.3. I've tried this in the latest version of visit and get the same results. I was able to reproduce this on a spatially decomposed BOV file created from noise.silo. The data I'm working with is 1k^3, so I've resampled noise onto the same sized grid. The behaviour seems to be random. Sometimes it crashes on the first render, othertimes it takes a few changes to the attributes to produce a crash. The DefaultRenderer works fine.

**The compute engine running on andes.olcf.ornl.gov has exited abnormally.

Shortly thereafter, the following occured...

Scalable Render Request Failed (VisItException) viewer: Obtained null data reader for rendered image for engine andes.olcf.ornl.gov. **

I'm attaching the session file and data below.

I'm running the client on a MacBook and the server on the Andes cluster at ORNL.

visitVRBug.zip

sambo57u commented 1 week ago

I can confirm this on Fedora Linux as well.