error: unknown option `--force-offscreen-rendering'

[defineconst]

hadoop@ubuntu:~$ /usr/local/bin/LightViz --data /home/hadoop/Downloads/ParaViewData-v4.4.0 --port 8080 --paraview /home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit --force-offscreen-rendering

error: unknown option `--force-offscreen-rendering'

[mathturtle]

--force-offscreen-rendering is an option to paraview or pvpython, not an option to light-viz. You could add an option to pass this flag through to ParaView. Look in bin/light-viz-cli.js for the LightViz command line options and the setup of the pvpython command it runs.

[defineconst]

hadoop@ubuntu:~$ /usr/local/bin/LightViz --data /home/hadoop/Downloads/ParaViewData-v4.4.0 --port 8080 --paraview /home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit

=============================================================================== | Execute: | $ "/home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit/bin/pvpython" | -dr | --force-offscreen-rendering | "/home/hadoop/Downloads/light-viz-master/server/pvw-light-viz.py" | --content | "/home/hadoop/Downloads/light-viz-master/dist" | --port | 8080 | --data | "/home/hadoop/Downloads/ParaViewData-v4.4.0"

Got unknown argument: --force-offscreen-rendering

--connect-id=opt Set the ID of the server and client to make sure they match. 0 is reserved to imply none specified.

--cslog=opt ClientServerStream log file.

--data=opt Load the specified data. To specify file series replace the numeral with a '.' eg. my0.vtk, my1.vtk...myN.vtk becomes my..vtk

--disable-registry
-dr Do not use registry when running ParaView (for testing).

--enable-bt Enable stack trace signal handler.

--enable-streaming EXPERIMENTAL: When specified, view-based streaming is enabled for certain views and representation types.

--help
/? Displays available command line arguments.

--hostname=opt Override the hostname to be used to connect to this process. By default, the hostname is determined using appropriate system calls.

--mesa Use the provided Mesa build and its default rendering backend.

--mesa-llvm Use the provided Mesa build and the software renderer (softpipe).

--mesa-swr Use the provided Mesa build and the SWR renderer.

--mpi Initialize MPI on processes, if possible. Cannot be used with --no-mpi.

--multi-servers Allow client to connect to several pvserver

--native Use the system-provided OpenGL implementation.

--no-mpi Don't initialize MPI on processes. Cannot be used with --mpi.

--print-monitors Print detected monitors and exit (Windows only).

--server-url=opt
-url=opt Set the server-url to connect to when the client starts. The --server (-s) option supersedes this option, hence use only one of the two options.

--servers-file=opt Load the specified configuration servers file (.pvsc). This option replaces the default user's configuration servers file.

--state=opt Load the specified statefile (.pvsm).

--stereo Tell the application to enable stereo rendering

--stereo-type=opt Specify the stereo type. This valid only when --stereo is specified. Possible values are "Crystal Eyes", "Red-Blue", "Interlaced", "Dresden", "Anaglyph", "Checkerboard","SplitViewportHorizontal"

--test-plugin=opt Specify the name of the plugin to load for testing

--test-plugin-path=opt Specify the path where more plugins can be found.This is typically used when testing plugins.

--version
-V Give the version number and exit.

[jourdain]

See https://www.paraview.org/ParaView/Doc/Nightly/www/cxx-doc/Offscreen.html but that was added after 5.4.1. So either you don't use that argument or you use a newer version of ParaView.

Ideally you should use LightViz that is bundle with your ParaView to prevent any version miss-match. For that just replace the path of the command line that get ran with the corresponding file under that directory /home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit/

The command line is:

$ "/home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit/bin/pvpython"
|   -dr
|   "/home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit/..../light-viz/server/pvw-light-viz.py"
|   --content
|   "/home/hadoop/Downloads/ParaView-5.4.1-Qt5-OpenGL2-MPI-Linux-64bit/..../light-viz/www"
|   --port
|   8080
|   --data
|   "/home/hadoop/Downloads/ParaViewData-v4.4.0"

Where the ... should be something like share/paraview-5.4/web.