Hi David, I have been trying to find some cycles to check this out myself with ParaView 4.4. Thanks to hardware issues (i.e. my big workstation's disk dying), I haven't been able to. Good news is that I found issues with OSMesa + OpenGL2 that we are working through. Give me another 1-1.5 weeks.
Best, -berk On Mon, Sep 28, 2015 at 10:46 AM, David Trudgian < [email protected]> wrote: > Hi Berk, > > > > Finally managed to grab an allocation of some Tesla K40 nodes on our > cluster, to check GPU rendering of the full 17GB file with 2 x 12GB GPUs. I > see the same thing as I did with OSMesa rendering. > > > > The 9GB downsampled version works great, across 2 nodes both with a single > K40. Go up to the 17GB original file and nothing is rendered, no errors. > Same behavior with OPENGL or OPENGL2 backends. > > > > This is all on paraview 4.3.1 still – I need to find time to build OSMesa > / MPI versions of 4.4 here. But, does 4.4. have any fixes that would be > expected to affect this? > > > > Thanks, > > > > -- > David Trudgian Ph.D. > Computational Scientist, BioHPC > UT Southwestern Medical Center > Dallas, TX 75390-9039 > Tel: (214) 648-4833 > > > > *From:* Berk Geveci [mailto:[email protected]] > *Sent:* Tuesday, September 15, 2015 2:43 PM > *To:* David Trudgian <[email protected]> > *Cc:* ParaView Mailing List <[email protected]> > *Subject:* Re: [Paraview] Volume Rendering 17GB 8.5 billion cell volume > > > > Hey David, > > > > I am hoping to have some time to play around with volume rendering and > hopefully tracking this issue, one thing that I wanted to clarify: it > sounds from you description that you have a short (2 byte) value. Is that > correct? > > > > Thanks, > > -berk > > > > On Wed, Sep 9, 2015 at 5:00 PM, David Trudgian < > [email protected]> wrote: > > Hi, > > We have been experimenting with using Paraview to display very volumes > from very > large TIFF stacks generated by whole-brain microscopy equipment. The test > stack > has dimensions of 5,368x10,695x150. Stack is assembled in ImageJ from > individual > TIFFs, exported as a RAW and loaded into paraview. Saved as a .vti for > convenience. Can view slices fine in standalone paraview client on a 256GB > machine. > > When we attempt volume rendering on this data across multiple nodes with > MPI > nothing appears in the client. Surface view works as expected. On > switching to > volume rendering the client's display will show nothing. There are no > messages > from the client or servers - no output. > > This is happening when running pvserver across GPU nodes with NVIDIA Tesla > cards, or using CPU only with OSMESA. pvserver memory usage is well below > what > we have on the nodes - no memory warnings/errors. > > Data is about 17GB, 8 billion cells. If we downsize to ~4GB or ~9GB then > we can > get working volume rendering. The 17GB never works regardless of scaling > nodes/mpi processes. The 4/9GB will work on 1 or 2 nodes. > > Am confused by the lack of rendering, as we don't have memory issues, or an > other messages at all. Am wondering if there are any inherent limitation, > or I'm > missing something stupid. > > Thanks, > > Dave Trudgian > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > > > > ------------------------------ > > UT Southwestern > > Medical Center > > The future of medicine, today. >
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