On Sun, Sep 27, 2009 at 11:34 AM, Jonathan <gu...@uwosh.edu> wrote: > > Bob Hanson (the lead Jmol developer) has verified that replacing > the .innerHTML within a div containing Jmol with plain html does > destroy the applet and free up memory. Thus my suggestion should > work. I haven't got any example clean code yet. I might get to it > this evening, but no promises. > > Jonathan
Thanks so much! Once you get something up as a demo, I can also spend some of my time integrating this into the notebook, as the notebook is my full-time job for the next month. Definitely feel free to ping me for help, etc. -- William > > On Sep 26, 12:45 pm, Jonathan <gu...@uwosh.edu> wrote: >> I have my own answer to #3. I think that using document.write to >> replace the applet with a picture when not in use should work. I >> haven't investigated yet to see if it really saves memory. My >> suggestion is to use the list of applets JmolApplet0, >> JmolApplet1, ...JmolAppletn to keep only three to four applets active. >> When the fifth is opened (#4) then #0 should be replaced with a >> picture that has an onclick action that would reload the applet and >> unload another. Doesn't sound like too bad a bit of javascript. >> >> Since I don't yet understand exactly how Jmol is used inside the >> notebook, I don't think I can actually do the coding now. If I get a >> chance later I will try it on a plain vanilla test page and pass along >> the javascript that works for that. >> >> Jonathan >> >> On Sep 26, 7:24 am, Jonathan <gu...@uwosh.edu> wrote: >> >> > A few things related to the memory constraints: >> >> > 1) The available memory is limited by the set up of the JavaVM on the >> > users computer. I believe 64 Mb is the default. If you need more you >> > could supply instructions to the user on how to reset their JavaVM. >> > There can also be issues with the browser's use of memory. >> >> > 2)Is Sage using the whole JmolApplet.jar or allowing Jmol to load >> > pieces as needed starting with JmolApplet0.jar (may have the name >> > wrong)? If these parts are in the Jmol applet directory, just >> > specifying the path to the applet directory on the server should load >> > the pieces only as needed. This will save memory and network >> > bandwidth. >> >> > 3) Unloading the applet, when a plot isn't being used, might work. I >> > am not sure it can be done without reloading the whole page. Once the >> > applet is in the java cache you wouldn't have to move that across the >> > network, so I don't think transit time would be a problem. I'll ask >> > around on the Jmol lists. >> >> > Jonathan >> >> > On Sep 26, 2:38 am, Robert Bradshaw <rober...@math.washington.edu> >> > wrote: >> >> > > On Sep 25, 2009, at 10:30 AM, Jason Grout wrote: >> >> > > > William Stein wrote: >> >> > > >> We could try changing how jmol is used in Sage as follows: when the >> > > >> user isn't actively using the 3d image, it is replaced by a static >> > > >> png. Then there would be at most 1 jmol applet per page. >> >> > > > That seems to be how mathematica does things. At least, when I have >> > > > compiz turned on, I physically see the static figure be replaced >> > > > (with a >> > > > window swooping in) by a window that lets me rotate, and when I let >> > > > go, >> > > > the figure is redrawn as a static image. Sometimes this is really >> > > > annoying, as I have to wait for the figure to be changed. >> >> > > > In our case, it sounds like we would have to wait for a round trip to >> > > > the server every time we tried rotating things? (or maybe we'd wait a >> > > > few seconds, and then replaced it?) >> >> > > > Is there any chance of making a "lite jmol" that was took much less >> > > > than >> > > > around 64/10=6.4M of memory? Surely there is a lot in jmol that we >> > > > don't use or need at the moment. >> >> > > That'd be cool, but I doubt the 6.4M memory used is stuff we don't >> > > use--the memory-intensive part is probably the rendering itself >> > > (which we can't get by without). It'd be easy to see--how does the >> > > memory footprint vary with the applet size? >> >> > > I think the idea of keeping a single applet, and shifting it around, >> > > is a cool one, if it can be made snappy enough. Usually you only want >> > > to manipulate the one you just made anyways. >> >> > > - Robert > > > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
