Good morning, Well the caching was not the issue. The animation I started creating last evening has thus far only written two 3 frames, so I will uncheck the offscreen rendering next and try again. We have been playing with the offscreen rendering before, but I beleive that had to do with stability issues in one of the previous versions.
Tom 2013/1/14 Utkarsh Ayachit <[email protected]> > Interesting. I am not sure what it could be. Another option is to try > disabling the use of offscreen rendering for screenshots (by > unchecking "Use Offscreen Rendering for Screenshots" in the "Settings" > dialog on the "Render View" page (at the bottom of that page). > > Utkarsh > > On Mon, Jan 14, 2013 at 11:06 AM, Tom Fahner <[email protected]> wrote: > > 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 > -- T.C. Fahner e: [email protected] t: +31-6-52642814 a: van Lodensteynstraat 24 2612 SE Delft Netherlands
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