<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:12pt"><div>Dear Diva:<br><br>If this is not a HyperGrid issue, then I would submit that solving region communication problems to allow avatars to cross region boundaries is very important and the solution is not to spread out all the sims with a blank space in between.<br><br>By doing that, we eliminate any possibility of any region crossings.<br><br>So, lets continue to tackle the problem and work through the details. I would not advocate blank spaces between every sim on a grid that has any notion of a "mainland".<br><br>Charles<br></div><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Diva Canto
<diva@metaverseink.com><br><b><span style="font-weight: bold;">To:</span></b> opensim-users@lists.berlios.de<br><b><span style="font-weight: bold;">Sent:</span></b> Tuesday, December 30, 2008 3:32:50 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Opensim-users] Consequences of vicinity<br></font><br>
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Charles,<br>
<br>
This has nothing to do with the hypergrid. This is about having
neighbors that are on the same grid but running different,
incompatible, versions of opensim -- incompatible as in incompatible
inter-simulator communications (not as grid-region communications).<br>
<br>
Crista<br>
<br>
Charles Krinke wrote:
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<div style="font-family: arial,helvetica,sans-serif; font-size: 12pt;">
<div>Hang on. We are getting afield a bit. There are several goals
and tests going on in OSGrid that have nothing to do with HyperGrid.<br>
<br>
One of these is developing a mainland, which by its nature needs sims
side by side. Another is testing region crossings at sides and corners,
which also by its nature needs sims side by side.<br>
<br>
I admire and respect Diva's work, but lets also not loose sight of the
other considerations that led to us creating a grid in the first place.<br>
<br>
Those who wish to work on HyperGrid notions may certainly put their
regions away from the growing mainland at 10000,10000. I believe that
the area less then 4096, 4096 may be more suitable for HyperGrid
notions as it bypasses the "4096 arithmetic problem" in the client.<br>
<br>
Charles<br>
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<div style="font-family: arial,helvetica,sans-serif; font-size: 13px;"><font size="2" face="Tahoma">
<hr size="1"><b><span style="font-weight: bold;">From:</span></b>
Justin Clark-Casey <a rel="nofollow" class="moz-txt-link-rfc2396E" ymailto="mailto:jjustincc@googlemail.com" target="_blank" href="mailto:jjustincc@googlemail.com"><jjustincc@googlemail.com></a><br>
<b><span style="font-weight: bold;">To:</span></b>
<a rel="nofollow" class="moz-txt-link-abbreviated" ymailto="mailto:opensim-users@lists.berlios.de" target="_blank" href="mailto:opensim-users@lists.berlios.de">opensim-users@lists.berlios.de</a><br>
<b><span style="font-weight: bold;">Sent:</span></b> Tuesday,
December 30, 2008 8:33:29 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b> Re:
[Opensim-users] Consequences of vicinity<br>
</font><br>
Diva Canto wrote:<br>
> Justin Clark-Casey wrote:<br>
>> Is it worth updating the interface version number in
OpenSim.Framework.Servers.VersionInfo to ensure that this is <br>
>> enforced automatically for grids?<br>
>><br>
>> <br>
> Yes, to some extent, but not completely. This is about sim-sim
comms, <br>
> not sim-grid comms. Therefore if you have a running sim connected
to <br>
> osgrid who's owner is on vacation, that sim will continue to run
-- and <br>
> maybe cause problems to the neighbors -- even if you bump up the
version <br>
> number in Servers. We would need to check the version number on <br>
> inter-region comms, not just on region registration with the grid.
Or <br>
> else on region registration, the grid server should look into the <br>
> VersionNumber of the potential neighbors and warn/disallow
registrations <br>
> when the version numbers are not compatible.<br>
<br>
In principle, a grid server that has been upgraded could, on restart,
kick off regions that have an interface number <br>
that is now too low. This would be for a grid administrator that wants
to ensure a smooth inter-region experience on <br>
the grid.<br>
<br>
In practice, a grid administrator might want to be more lenient
(perhaps notification rather than kick).<br>
<br>
I guess you could have a grid that allows different clusters of regions
where those regions use a different/old <br>
interface than other region clusters on the grid, yet all clusters used
the same grid comms. The problem of teleport <br>
(in which you still travel between disconnected clusters) might require
a different interface version than an interface <br>
for neighbouring sims.<br>
<br>
Nonetheless, in practice people who don't read these lists will
continue to put sims side by side. If the version <br>
number isn't bumped we may well see an upsurge in questions and
confusion which we saw not long ago when OpenSim <br>
revisions crossed interface incompatibility thresholds (whether grid
<-> sim or sim <-> sim).<br>
<br>
Perhaps this is something that grid admins can give input on. Do you
think the interface version number should be <br>
bumped with neighbour interface changes to stop people having problems
when they are neighbouring regions with <br>
incompatible versions? Or should people always be instructed to keep
regions away from each other unless they are sure <br>
that their neighbours are going to update in sync with themselves.<br>
<br>
-- <br>
justincc<br>
Justin Clark-Casey<br>
<a rel="nofollow" target="_blank" href="http://justincc.wordpress.com">http://justincc.wordpress.com</a><br>
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