Hello Utkarsh, Well in fact I have used both. I had used a python script before, which gave a similar behavior, but in that case the unusual large intervals were about 15 minutes instead of 8 hours. I also noticed that there was something wrong in my setup using the python script, so when I redid the animation I simply used the GUI to check the setup more rigorously and decided not to use the python script.
A bit more info on the python script: With the python script I also assumed it may have been related to the actual screen being rendered at the moment that the large intervals showed up. This because I used VNC to log into the machine for rendering and the screen was locked with ParaView running for most of the time. I just unlocked the screen occasionally to have a look at the progress from time to time and I could imagine this may have influenced the rendering. Later I also saw a 15 min. interval between two pngs which were created in the middle of the night, meaning the screen was probably still locked, so I assumed that me unlocking the screen could not have been the reason. Fifteen minutes between two frames can be accepted if this happens once in 100 frames or so, but 8 hours is just too much. At the moment I started the animation from the GUI again, but with the "Cache Geometry" unchecked as you suggested. I will check the results of that setting tonight. Regards, Tom 2013/1/14 Utkarsh Ayachit <[email protected]> > Tom, > > I wonder if caching is causing these issues. Are you using the > ParaView GUI or a Python script? If the GUI, can you disable caching > (uncheck "Cache Geometry" from the "Animation" page in the "Settings" > dialog. > > Utkarsh > > On Mon, Jan 14, 2013 at 5:50 AM, Tom Fahner <[email protected]> wrote: > > Dear all, > > > > For some reason I noticed that ParaView has some large intervals between > > writing a PNG for consecutive frames of an animation. Normally there is > > about one minute between the timestamp of two PNGs, but sometimes there > is > > suddendly a gap of 8 hours: > > > > 141K Jan 13 15:56 New_Volume_.0118.png > > 141K Jan 13 15:58 New_Volume_.0119.png > > 139K Jan 13 15:59 New_Volume_.0120.png > > 139K Jan 13 16:00 New_Volume_.0121.png > > 138K Jan 14 00:34 New_Volume_.0122.png > > 139K Jan 14 00:35 New_Volume_.0123.png > > 139K Jan 14 00:36 New_Volume_.0124.png > > > > There are multiple occasions where these large intervals happen but this > > does not happen at a regular interval of the animation. There does seem > to > > be a relation with the amount of memory that is used, since there is a > > sudden decrease in memory used right after "Jan 14 00:34". Below I will > > describe my animation and setup. I hope anyone can give an explanation > for > > the behavior. > > > > During the weekend I have created an animation of a mixing tank using > volume > > rendering of the concentration of some chemicals in the tank. It is a > > reasonably large CFD simulation performed with OpenFOAM. There are about > 15 > > million cells (tetrahedrals and prismatic layer), but not extremely > large. I > > saved the concentration every 0.25 seconds for a 120s simulation. We have > > ParaView 3.98.0 installed on this machine and it was the only program > > running at the time. I have made the animation with ffmpeg after ParaView > > made the frames as consecutive pngs. Besides the volume rendering of the > > concentration, the walls of the tank where shown with a fixed opacity of > 0.3 > > and the internal structure (some rotors and baffles) where present as > well. > > Although the simulation use the MRF concept, I did mimick the rotation of > > the rotors using the transform filter. Using the "cool to warm" preset > for > > visualization I could nicely set the opacity to 0 when the concentration > was > > in the allowed range and it showed red in case of too high > concentration, of > > blue when too low. The resulting animation is satisfactory, I just wonder > > what can be done to make sure these large intervals between writing > images > > do not happen. > > > > Hope someone can help, if you need more information, please let me know. > > > > Regards, > > Tom > > > > -- > > T.C. Fahner > > e: [email protected] > > > > > > _______________________________________________ > > 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 > > > > Follow this link to subscribe/unsubscribe: > > http://www.paraview.org/mailman/listinfo/paraview > > > -- T.C. Fahner e: [email protected] t: +31-6-52642814 a: van Lodensteynstraat 24 2612 SE Delft Netherlands
_______________________________________________ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
