you no longer need to rebuild ODE for 64 bit.. and about both ODE and Meshmerizier +1 on both. I would also like to extend this thread to ask anyone who is using Basic Physics and Zeromesher, please let us know why you are using it, thanks.<br>
<br>Neb<br><br><div class="gmail_quote">On Wed, Sep 9, 2009 at 12:25 PM, dz <span dir="ltr"><<a href="mailto:dz@bitzend.net">dz@bitzend.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Justin,<br><br>The wiki still has sections indicating that some linux platforms may require a rebuild of the ODE software. This may be me mis-reading the wiki, or it may be old info.<br>Because we run on 64 bit linux (Ubuntu 9.04 server), we do Mono and ODE builds from source anyway. It would seem, however, that if some of the linux platforms will not run ODE "out of the box", it may be a reason to stick to the current default. Im sorry I dont have any way to test and see if the wiki information is outdated.<br>
<br>If ODE is made the default, please add some information to the wiki documentation describing the configuration flags used to build it. This may provide the basis for discussions on the impact the build parameters have on performance. You may also want to note that using the ODE engine uses a LOT more memory than the current defaults.<br>
<br>I really dont have a preference one way or the other, except to say that having a 'default' configuration that works in the majority of installations seems a better idea than one likely to trigger posts to forums complaining about a "more complicated" setup. Maybe the transition to ODE later provides a "built in" delay for beginning administrators to get thier feet wet, find out what they want to tweak, and might insure they look at the wiki for directions :)<br>
<br>Doug Osborn<div><div></div><div class="h5"><br><br><div class="gmail_quote">On Wed, Sep 9, 2009 at 11:17 AM, Justin Clark-Casey <span dir="ltr"><<a href="mailto:jjustincc@googlemail.com" target="_blank">jjustincc@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
In the OpenSim developer's meeting yesterday on OSGrid we had a discussion about<br>
making ODE the default physics engine and Meshmerizer the default mesher.<br>
<br>
Currently, basicphysics is the default physics engine but the general response<br>
was that everybody quickly switches to ODE since objects can only be phantom<br>
under basicphysics.<br>
<br>
The disadvantage with switching to ODE is that 64 bit Windows users would have<br>
to run bin/OpenSim.32BitLaunch.exe since there is currently no compilable 64 bit<br>
Windows ODE (though there is a Linux one).<br>
<br>
Everybody at the meeting felt that the advantages of going with ODE outweighed<br>
this disadvantage. Does anybody on the list have a good reason for not<br>
switching defaults?<br>
<br>
As for meshing, ZeroMesher is currently the default. However, this implements<br>
extremely basic meshing (non rotatable cubes). In comparison, Meshmerizer is<br>
much more sophisticated. There was strong feedback in the meeting that many<br>
people quickly switch to Meshmerizer and that it would be good to make this the<br>
default. Anybody have good counter-arguments to this? I think there is<br>
potentially some performance impact but users sophsticated enough to encounter<br>
that can always switch back to ZeroMesher.<br>
<font color="#888888"><br>
--<br>
justincc<br>
Justin Clark-Casey<br>
<a href="http://justincc.org" target="_blank">http://justincc.org</a><br>
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