<div dir="ltr"><div><div><div><div>Oh, I forgot to mention the data type in my previous post. <br></div>You are indeed right, it is an unstructured grid. In order to make sure it is not related to my input files, I tried with the example case XX as well with the same results.<br></div>ParaView was built with the OpenGL2 rendering backend, as this seems to be the new standard also with the pre-compiled clients.<br></div>I think this is not a MPI issue, as also starting only a single process does not solve the problem.<br><br></div>Gunnar<br></div><div class="gmail_extra"><br><div class="gmail_quote">2016-07-11 20:35 GMT+02:00 Utkarsh Ayachit <span dir="ltr"><<a href="mailto:utkarsh.ayachit@kitware.com" target="_blank">utkarsh.ayachit@kitware.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Odd. I wonder if it's driver related. Did you build ParaView with<br>
VTK_RENDERING_BACKEND set to OpenGL2? Also, "-tdx"/"-tdy" could indeed<br>
slow things down as it's now rendering for a tiledisplay rather than<br>
for a client. The rendering works in that case, since the client is<br>
rendering on it's own. Also what is the datatype you're rendering? I'd<br>
suspect it's an unstructured grid or a multiblock of unstructured<br>
grid.<br>
<br>
Utkarsh<br>
<div><div class="h5"><br>
On Sat, Jul 9, 2016 at 3:28 AM, Gunnar Jansen <<a href="mailto:jansen.gunnar@gmail.com">jansen.gunnar@gmail.com</a>> wrote:<br>
> Dear ParaView users,<br>
><br>
> I recently set up a pvserver on our small cluster. I used the most recent<br>
> stable ParaView release 5.1 and compiled from source.<br>
><br>
> The connection and rendering in client/server mode works fine in all<br>
> representations except the "Volume" rendering. Here, depending on the model,<br>
> either no model is shown at all (just the standard 3D render screen), or the<br>
> previous representation with artifacts shows up. This seems to be a problem<br>
> of the --use-offscreen-rendering flag that I use in the pvserver startup.<br>
><br>
> I run the server on a node with 2 CPU (with 10 cores each) and 2 Nvidia<br>
> Tesla K40c. I start the server with:<br>
><br>
> xinit /usr/mpi/gcc/openmpi-1.6.5/bin/mpirun -np 4 pvserver -display :0.0<br>
> --use-offscreen-rendering : -np 4 pvserver -display :0.1<br>
> --use-offscreen-rendering<br>
><br>
> In the client the threshold for remote rendering is set to 0.<br>
><br>
> If I pass additionally the -tdx=1 and -tdy=1 flags the volume rendering is<br>
> performed correctly, but the overall speed is decreased greatly.<br>
><br>
> Thank you in advance for any help!<br>
><br>
> Gunnar<br>
><br>
><br>
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