> 1. A more genereal question first - our cluster nodes don't have good GPUs > so the plan is to render on the CPU. I assume we need Mesa for it, right?
Yes. > Further, since we want to render on the server, do we need to set the > DISPLAY variable to :0, or, is there any other way to tell this to Paraview? This depends on whether you're going to build ParaView with X support or not. If you build with OSMesa, then you don't need X, as a result you don't need to set DISPLAY variable. > 2. (a) I suspect stock OSMesa is not built with support for llvmpipe which is needed to provide newer OpenGL versions. You should build Mesa from source with confguration options already setup in ParaView superbuild. See [1], [2]. Alternatively, you can use the superbuild itself to build osmesa for you, or ParaView with OSMesa support. > I should have a fairly recent Mesa and OpenGL on a stock CentOS7 system, > e.g. > $ glxinfo | grep -i "OpenGL version" > OpenGL version string: 4.6.0 NVIDIA 390.30 This is not giving you the renderer OSMesa will use. If you were using Mesa, you'd get a "Mesa..." something in your OpenGL version string and not NVIdia. > Note that if I compile without the VTK_OPENGL_HAS_OSMESA, I don't get the > above error. That because then you're indeed using your GPU drivers. > b) EGL Mesa EGL is not supported as currently it does not support full OpenGL, only OpenGL-ES. > Or, ideally, is there a walktrough for the headless rendering Paraview > build? Just use the superbuild [3]. Check the readme out for more info, but to build osmesa paraview, I'd just enable `ENABLE_paraview` and `ENABLE_osmesa` Cmake variabels and build. You than then enable MPI too and pick set `USE_SYSTEM_mpi` if you want to use existing MPI on your system. HTH, Utkarsh [1] https://gitlab.kitware.com/paraview/paraview-superbuild/blob/master/projects/unix/osmesa.cmake [2] https://gitlab.kitware.com/paraview/paraview-superbuild/blob/master/projects/unix/mesa.common.cmake [3] https://gitlab.kitware.com/paraview/paraview-superbuild _______________________________________________ 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: https://public.kitware.com/mailman/listinfo/paraview
