[Paraview] ParaViewWeb - Issues with Loading ASCII STL file & Rendering the Output Fields
kai liu
liuwukai at yahoo.com
Fri Sep 25 11:15:47 EDT 2015
Dear Scott,
Thanks for your quick response, I have also put my responses inline below with light blue color :
Issue 1: Loading ASCII stl file
When I try to load my ASCII stl file on the ParaviewWeb, I receive the following error message in my log file. However, desktop ParaView application loads the file fine.
ERROR: In /home/user/ParaViewWeb/ParaView/src/VTK/IO/Geometry/vtkSTLReader.cxx, line 461vtkSTLReader (0x5d89b50): STLReader: error while reading file /home/user/ParaViewWeb/data/Mitchell_Lee_Administration_ReckordArmory_.stl at line 14: unable to read reading point.
ERROR: In /home/user/ParaViewWeb/ParaView/src/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784vtkPVCompositeDataPipeline (0x5d84f70): Algorithm vtkFileSeriesReader(0x5d881b0) returned failure for request: vtkInformation (0x5d97f30) Debug: Off Modified Time: 225417 Reference Count: 1 Registered Events: (none) Request: REQUEST_DATA FROM_OUTPUT_PORT: 0 ALGORITHM_AFTER_FORWARD: 1 FORWARD_DIRECTION: 0
Did you build the ParaView desktop application in the same build as the version you're using to run ParaViewWeb? Maybe you could try to take one of the standard ParaView datasets and try to load it in ParaViewWeb, and see if you have the same issue you mentioned above. To get this data if you don't already have it, go here:
http://www.paraview.org/download/
And under "Type of Download", choose "Data, Documentation, and Tutorials". Once you get this data, try opening the "disk_out_ref.ex2" file in ParaViewWeb. If you see the same issue as above, then there could be something going on with the way you have built ParaView, which we can try to figure out at that point. If you do not see the same issue as above, then perhaps you could send me (off the list) a sample data file I could use to try to replicate the problem and debug it on this end.
Kai's Response
I did not build the ParaView desktop application. I installed ParaView 4.1.0 through the Ubuntu terminal using sudo apt-get install paraviewopenfoam410 .
I tested files with local ParaView desktop application as well as local ParaViewWeb. My Ubuntu 14.04 server does not have ParaView application, and it has only ParaViewWeb. Both server and local ParaViewWeb produce the same issues.
I have tested "disk_out_ref.ex2" file in ParaViewWeb, and it seems to be okay. I will send you the sample data files privately.
Issue 2:
If I do the following selections on the ParaViewWeb, I always receive src/VTK/Common/Core/vtkDataArrayTemplate.h:191: T vtkDataArrayTemplate<T>::GetValue(vtkIdType) [with T = float; vtkIdType = long long int]: Assertion `id >= 0 && id < this->Size' failed message in the log file and cause the web socket connection closed.
2015-09-23 17:33:52-0400 [-] Log opened.2015-09-23 17:33:53-0400 [-] Site starting on 90092015-09-23 17:33:53-0400 [-] Starting factory <twisted.web.server.Site instance at 0x7fb6f2e55830>2015-09-23 17:33:53-0400 [HTTPChannel,0,127.0.0.1] Client has reconnected, cancelling reaper2015-09-23 17:33:53-0400 [HTTPChannel,0,127.0.0.1] on_connect: connection count = 1pvpython: /home/user/ParaViewWeb/ParaView/src/VTK/Common/Core/vtkDataArrayTemplate.h:191: T vtkDataArrayTemplate<T>::GetValue(vtkIdType) [with T = float; vtkIdType = long long int]: Assertion `id >= 0 && id < this->Size' failed.
----------------------------------------------------------------------------------------------------------------------------------------------------------------
WebSocket connection to 'ws://XXXXXXXXXXX:8080/proxy?sessionId=0c562ad6-623f-11e5-9b44-00155dd73e0d' failed: Error during WebSocket handshake: Unexpected response code: 503
I checked HTTP traffic, it has the following message. I assume the connection is closed because of the above error.
I wonder if the server side process crashed as a result of the error you see in the log file? That would explain the websocket connection error. Again, trying a known data set like "disk_out_ref.ex2" may help us to pinpoint problem which caused the error output you saw above.
Kai's Response
My unintelligent question is how could I determine if the server side process crashed?
Issue 3: Slow ParaViewWeb
My ParaViewWeb is very slow. Even I change the rendering mode to WebGL, It is still very slow. The Ubuntu 14.04 Sever specifications are the following:
- 8 Cores - 8 GB RAM - 2.3 Ghz processors
To get faster rendering with OSMesa, you may try building a recent version of OSMesa using Gallium + LLVMPipe. See here:
http://www.paraview.org/Wiki/ParaView/ParaView_And_Mesa_3D
But even that won't be as fast as hardware rendering (not using OSMesa). I'm not sure why you don't see a speedup when switching to WebGL, though, for if your data is small enough to all fit in within the GPU of your desktop or laptop, then it should be faster than offscreen rendering on the server, once the data is loaded.
Kai's Response
I believe my build is based on recent version of OSMesa using Gallium + LLVMPipe
Mesa 9.2.2 OSMesa Gallium llvmpipe
make -j4
autoreconf -fi
./configure \CXXFLAGS="-O2 -g -DDEFAULT_SOFTWARE_DEPTH_BITS=31" \CFLAGS="-O2 -g -DDEFAULT_SOFTWARE_DEPTH_BITS=31" \--disable-xvmc \--disable-glx \--disable-dri \--with-dri-drivers="" \--with-gallium-drivers="swrast" \--enable-texture-float \--disable-shared-glapi \--disable-egl \--with-egl-platforms="" \--enable-gallium-osmesa \--enable-gallium-llvm=yes \--with-llvm-shared-libs \--prefix=/opt/mesa/9.2.2/llvmpipe
make -j2
make -j4 install
When I built ParaViewWeb, The following is what I changed when I generated the cmake file:
PARAVIEW_ENABLE_PYTHON ONPARAVIEW_BUILD_QT_GUI OFFCMAKE_INSTALL_PREFIX /.../ParaView/installVTK_USE_X OFFOPENGL_INCLUDE_DIR /opt/mesa/9.2.2/llvmpipe/includeOPENGL_gl_LIBRARYOPENGL_glu_LIBRARY /opt/mesa/9.2.2/llvmpipe/lib/libGLU.soVTK_OPENGL_HAS_OSMESA ONOSMESA_INCLUDE_DIR /opt/mesa/9.2.2/llvmpipe/includeOSMESA_LIBRARY /opt/mesa/9.2.2/llvmpipe/lib/libOSMesa.so
Please feel free to correct me if you believe you did not build a recent version of OSMesa using Gallium + LLVMPipe
I will send you two data files. First one is an ASCII STL file (issue 1) and second one is the issue rendering output fields (issue 2). Thank you for your help!
Please let me know if you need anything from me.
Kai L.
--------------------------------------------------------------------------------------------------------------------------------------
On Thursday, September 24, 2015 9:45 AM, Scott Wittenburg <scott.wittenburg at kitware.com> wrote:
Hello Kai,
Thanks for your questions, I have put my responses inline below:
On Thu, Sep 24, 2015 at 5:45 AM, kai liu via ParaView <paraview at paraview.org> wrote:
Dear,
I have deployed ParaViewWeb. Everything seems to work fine, but I am not able to visualize outputs, such as rendering the output fields such as T, V, etc.
I built and tried ParaViewWeb 4.1, 4.3 and 4.4 with offscreen OSMesa, and I have received the same issues. Currently I use Apache 2.4.16 as a front end running on port 8080, python launcher and ParaViewWeb 4.4 with offscreen OSMesa. The following is my launcher and Apache configuration files:
launcher.json
{
"configuration": { "host" : "localhost", "port" : 9000, "endpoint": "paraview", "content": "/home/user/ParaViewWeb/ParaView/build/www", "proxy_file": "/home/user/ParaViewWeb/pv-mapping-file/mapping.txt", "sessionURL" : "ws://testexample.com:8080/proxy?sessionId=${id}", "timeout" : 25, "log_dir" : "/home/user/ParaViewWeb/pvwLogs", "upload_dir" : "/home/user/ParaViewWeb/upload", "fields" : ["file", "host", "port", "updir"] },
"resources" : [ { "host" : "localhost", "port_range" : [9001, 9010] } ],
"properties" : { "build_dir" : "/home/user/ParaViewWeb/ParaView/build", "python_exec" : "/home/user/ParaViewWeb/ParaView/build/bin/pvpython", "python_path": "/home/user/ParaViewWeb/ParaView/build/lib/site-packages", "WWW" : "/home/user/ParaViewWeb/ParaView/build/www", "dataDir": "/home/user/ParaViewWeb/data", "load_file": "/home/user/ParaViewWeb/upload", "source_dir": "/.../src" },
"apps": { "pipeline": { "cmd": [ "${python_exec}", "-dr", "${python_path}/paraview/web/pv_web_visualizer.py", "--port", "${port}", "--data-dir", "${dataDir}" ], "ready_line" : "Starting factory" }, "visualizer": { "cmd": [ "${python_exec}", "-dr", "${python_path}/paraview/web/pv_web_visualizer.py", "--port", "${port}", "--data-dir", "${dataDir}" ], "ready_line" : "Starting factory" }, "loader": { "cmd": [ "${python_exec}", "-dr", "${python_path}/paraview/web/pv_web_file_loader.py", "--port", "${port}", "--data-dir", "${dataDir}", "-f", "--authKey", "${secret}" ], "ready_line" : "Starting factory" }, "data_prober": { "cmd": [ "${python_exec}", "-dr", "${python_path}/paraview/web/pv_web_data_prober.py", "--port", "${port}", "--data-dir", "${dataDir}", "-f", "--authKey", "${secret}" ], "ready_line" : "Starting factory" } }}
httpd-vhosts.conf
<VirtualHost *:8080> ServerName testexample.com ServerAdmin webmaster at example-host.example.com DocumentRoot "/home/user/ParaViewWeb/ParaView/build/www" ErrorLog "/home/user/ParaViewWeb/apacheLogs/pv-error_log" CustomLog "/home/user/ParaViewWeb/apacheLogs/pv-access_log" common
ProxyPass /paraview http://localhost:9000/paraview
# Turn on the rewrite engine RewriteEngine On
# This is the path the mapping file Jetty creates RewriteMap session-to-port txt:/home/user/ParaViewWeb/pv-mapping-file/mapping.txt
# This is the rewrite condition. Look for anything with a sessionId= in the query part of the URL and capture the value to use below. RewriteCond %{QUERY_STRING} ^sessionId=(.*)$ [NC]
# This does the rewrite using the mapping file and the sessionId RewriteRule ^/proxy.*$ ws://${session-to-port:%1}/ws [P]
<Directory "/home/user/ParaViewWeb/ParaView/build/www"> Options Indexes FollowSymLinks Order allow,deny Allow from all AllowOverride None Require all granted </Directory></VirtualHost>
Issue 1: Loading ASCII stl file
When I try to load my ASCII stl file on the ParaviewWeb, I receive the following error message in my log file. However, desktop ParaView application loads the file fine.
ERROR: In /home/user/ParaViewWeb/ParaView/src/VTK/IO/Geometry/vtkSTLReader.cxx, line 461vtkSTLReader (0x5d89b50): STLReader: error while reading file /home/user/ParaViewWeb/data/Mitchell_Lee_Administration_ReckordArmory_.stl at line 14: unable to read reading point.
ERROR: In /home/user/ParaViewWeb/ParaView/src/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784vtkPVCompositeDataPipeline (0x5d84f70): Algorithm vtkFileSeriesReader(0x5d881b0) returned failure for request: vtkInformation (0x5d97f30) Debug: Off Modified Time: 225417 Reference Count: 1 Registered Events: (none) Request: REQUEST_DATA FROM_OUTPUT_PORT: 0 ALGORITHM_AFTER_FORWARD: 1 FORWARD_DIRECTION: 0
Did you build the ParaView desktop application in the same build as the version you're using to run ParaViewWeb? Maybe you could try to take one of the standard ParaView datasets and try to load it in ParaViewWeb, and see if you have the same issue you mentioned above. To get this data if you don't already have it, go here:
http://www.paraview.org/download/
And under "Type of Download", choose "Data, Documentation, and Tutorials". Once you get this data, try opening the "disk_out_ref.ex2" file in ParaViewWeb. If you see the same issue as above, then there could be something going on with the way you have built ParaView, which we can try to figure out at that point. If you do not see the same issue as above, then perhaps you could send me (off the list) a sample data file I could use to try to replicate the problem and debug it on this end.
Issue 2:
If I do the following selections on the ParaViewWeb, I always receive src/VTK/Common/Core/vtkDataArrayTemplate.h:191: T vtkDataArrayTemplate<T>::GetValue(vtkIdType) [with T = float; vtkIdType = long long int]: Assertion `id >= 0 && id < this->Size' failed message in the log file and cause the web socket connection closed.
2015-09-23 17:33:52-0400 [-] Log opened.2015-09-23 17:33:53-0400 [-] Site starting on 90092015-09-23 17:33:53-0400 [-] Starting factory <twisted.web.server.Site instance at 0x7fb6f2e55830>2015-09-23 17:33:53-0400 [HTTPChannel,0,127.0.0.1] Client has reconnected, cancelling reaper2015-09-23 17:33:53-0400 [HTTPChannel,0,127.0.0.1] on_connect: connection count = 1pvpython: /home/user/ParaViewWeb/ParaView/src/VTK/Common/Core/vtkDataArrayTemplate.h:191: T vtkDataArrayTemplate<T>::GetValue(vtkIdType) [with T = float; vtkIdType = long long int]: Assertion `id >= 0 && id < this->Size' failed.
----------------------------------------------------------------------------------------------------------------------------------------------------------------
WebSocket connection to 'ws://XXXXXXXXXXX:8080/proxy?sessionId=0c562ad6-623f-11e5-9b44-00155dd73e0d' failed: Error during WebSocket handshake: Unexpected response code: 503
I checked HTTP traffic, it has the following message. I assume the connection is closed because of the above error.
I wonder if the server side process crashed as a result of the error you see in the log file? That would explain the websocket connection error. Again, trying a known data set like "disk_out_ref.ex2" may help us to pinpoint problem which caused the error output you saw above.
Issue 3: Slow ParaViewWeb
My ParaViewWeb is very slow. Even I change the rendering mode to WebGL, It is still very slow. The Ubuntu 14.04 Sever specifications are the following:
- 8 Cores - 8 GB RAM - 2.3 Ghz processors
To get faster rendering with OSMesa, you may try building a recent version of OSMesa using Gallium + LLVMPipe. See here:
http://www.paraview.org/Wiki/ParaView/ParaView_And_Mesa_3D
But even that won't be as fast as hardware rendering (not using OSMesa). I'm not sure why you don't see a speedup when switching to WebGL, though, for if your data is small enough to all fit in within the GPU of your desktop or laptop, then it should be faster than offscreen rendering on the server, once the data is loaded.
Just glancing through the configuration files you provided, I don't see anything wrong.
Hope this helps,Scott
Please let me know if I have setup anything incorrectly. Could anybody help me with the above three issues that I am experiencing now. Thank you very much!
Kai L.
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