[Opensim-dev] Questions about hypergrid (eventually)

Mon Feb 20 14:15:32 UTC 2017

I imagine you have look at the following  web page among  the source of information for your article . Its a bit old 2011 but still valide in principles. 
http://www.ics.uci.edu/~lopes/opensim/HypergridReferenceGuide.html
Optimizing OpenSimulator, Part I | Tagide might be of interest to you even if not on hypergrid per say  it give insights on how stuff works between viewer and simulator. 

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Optimizing OpenSimulator, Part I | Tagide
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an other interesting view point is the mantis using hypergrid as search key. 
http://opensimulator.org/mantis/view_all_bug_page.php
Hope it helps

 GiMiSa

      De : Kurt Pudniks <skinduptruk at gmail.com>
 À : opensim-dev at opensimulator.org 
 Envoyé le : vendredi 17 février 2017 19h57
 Objet : Re: [Opensim-dev] Questions about hypergrid (eventually)

Hi Mike, all,
Love the idea of writing an article about opensim.  I support your enthusiasm!
The source code will show you line by line how things are done.  Question is:  how does each grid modify their base code to adapt to their users?  This tends to be somewhat commercial in confidence ;)  and therein lies the big political problem re evolving opensim 2.0 right now...
I'm aiming to learn some opensim (C#) for my own understanding of what is possible.  Feel free to email me directly and we can chat more ie I might read (perhaps even explain at times! :) some source code for you as a research assistant of sorts...
Thanks,Kurt.
On Sat, Feb 18, 2017 at 8:27 AM, Mike Higgins <mike at kayaker.net> wrote:

      I am writing an article on hypergrid transfers, an attempt to improve my own understanding, help others understand and perhaps improve the hypergrid documentation. The things I want to explain in the article is the timing: When are permission tests done? And when is content data actually copied from grid to grid? I think understanding this will make people more comfortable about moving content around the metaverse.  I have a bunch of questions. The documentation at http://opensimulator.org/wiki/ Hypergrid does not answer them all. I am trying to track down Diva to see if she will let me pick her brains. I have tried posting questions on IRC. (This comic does a good job of summarizing my opinion of IRC: https://xkcd.com/1782/ ).  So next I'll try asking my questions here. I'll start by asking: Is my understanding (below) of the roles of the server and the viewer correct? (Even before hypergrid is involved.)  When you log into your home grid, the server sends a copy of your inventory list to your viewer. This consists of (mainly) a list of names and UUIDs. The UUIDs are links to objects in the asset server, which in turn are structures made up of many items linked by UUIDs. At the ends of all these links are texture maps, mesh objects, sounds, animations, etc.  When you rez an object in-world, the inventory entry (just the name and UUID) is copied from your avatar inventory to the scene inventory of the region you are in. If you don't have COPY permission to the object, the inventory entry is removed from your avatar inventory. The actual data describing the object isn't involved in this transfer. It stayed where it was in the asset server, was not moved, was not deleted. The data there wasn't even read until someone looked at the newly rezzed object and viewers started making requests so they could render images of it.  Is this understanding basically correct? If my understanding of this is correct, I can move on to hypergrid questions.  
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