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 > _______________________________________________ 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
