[Opensim-dev] Make ODE and Meshmerizer the default options?

[Nebadon Izumi]

Ya i think we have reached a point now where people who try OpenSim are more
confused with why prims are phantom, it seems to jam some people who are
less than willing to just come out and ask for help the 1st day for fear of
feeling bothersome right away, i have seen on OSgrid some people struggle
with it for days trying to find info on their own without asking only to
break down after long struggle and ask what the heck is going on... It seems
to me its actually doing the exact opposite of what we originally intended
for it do for everyone, anyway just my obvservation from the OSgrid
perspective.. just one less question we  have to answer every week.

Neb

On Wed, Sep 9, 2009 at 11:45 PM, Stefan Andersson <lbsa71 at hotmail.com>wrote:

>  Yes,
>
>
>
> One of the main reason for introducing, and keeping, .Net-only modules for
> physics was to ensure minimal friction on first install.
>
>
>
> One option would be to work on the installation procedure; to add an
> “engine” configuration step to initial setup, having ODE as default; this
> would let us document caveats in the configuration instructions.
>
>
>
> I see no problem with switching to Meshmerizer as default though; +1 on
> that.
>
>
>
> /Stefan
>
>
>
> *From:* opensim-dev-bounces at lists.berlios.de [mailto:
> opensim-dev-bounces at lists.berlios.de] *On Behalf Of *dz
> *Sent:* den 9 september 2009 21:25
> *To:* opensim-dev at lists.berlios.de
> *Subject:* Re: [Opensim-dev] Make ODE and Meshmerizer the default options?
>
>
>
> Justin,
>
> 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.
> 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 if the wiki information is outdated.
>
> 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.
>
> 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 :)
>
> Doug Osborn
>
> On Wed, Sep 9, 2009 at 11:17 AM, Justin Clark-Casey <
> jjustincc at googlemail.com> wrote:
>
> In the OpenSim developer's meeting yesterday on OSGrid we had a discussion
> about
> making ODE the default physics engine and Meshmerizer the default mesher.
>
> Currently, basicphysics is the default physics engine but the general
> response
> was that everybody quickly switches to ODE since objects can only be
> phantom
> under basicphysics.
>
> The disadvantage with switching to ODE is that 64 bit Windows users would
> have
> to run bin/OpenSim.32BitLaunch.exe since there is currently no compilable
> 64 bit
> Windows ODE (though there is a Linux one).
>
> Everybody at the meeting felt that the advantages of going with ODE
> outweighed
> this disadvantage.  Does anybody on the list have a good reason for not
> switching defaults?
>
> As for meshing, ZeroMesher is currently the default.  However, this
> implements
> extremely basic meshing (non rotatable cubes).  In comparison, Meshmerizer
> is
> much more sophisticated.  There was strong feedback in the meeting that
> many
> people quickly switch to Meshmerizer and that it would be good to make this
> the
> default.  Anybody have good counter-arguments to this?  I think there is
> potentially some performance impact but users sophsticated enough to
> encounter
> that can always switch back to ZeroMesher.
>
> --
> justincc
> Justin Clark-Casey
> http://justincc.org
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-- 
Michael Emory Cerquoni - Nebadon Izumi @ http://osgrid.org
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