[sldev] Sim Size Limits?

SignpostMarv Martin me at signpostmarv.name
Mon Nov 3 06:07:13 PST 2008


See my previous blurb on using Region Domain RAID-esque splitting 
(although in this case I suppose it's more along the lines of JBOD).

~ Marv.

Dale Mahalko wrote:
> I commented on this topic in the SL forums long ago, but it's probably 
> worth mentioning again.
>
> While very large sims are potentially useful for realistic full-size 
> flying or sailing simulations, it's also useful to think about the 
> potential of very small sims. One of the most interesting uses for a 
> tiny sim is to build a realistic stadium capable of seating hundreds 
> if not thousands of avatars.
>
> Imagine a 256x256 plot, with a single 128x128m sim in the center, and 
> surrounded by a ring of sims 32x32m in size. This arrangement gives 
> you 48 very tiny sims surrounding the one-quarter size center sim:
>
>
> 32 32 32 32 32 32 32 32
> ,
> 32 32 32 32 32 32 32 32
> ,
> 32 32 -- -- -- -- 32 32
> ,
> 32 32 -- -- -- -- 32 32
> ,         128
> 32 32 -- -- -- -- 32 32
> ,
> 32 32 -- -- -- -- 32 32
> ,
> 32 32 32 32 32 32 32 32
> ,
> 32 32 32 32 32 32 32 32
>
>
> This has the potential to support up to 4800 avatars (assuming 100 per 
> sim, stacked up on multiple tiers of seating) all watching the event 
> in the center region. Since the center is a separate sim with four 
> times the typical CPU available to it, it allows for very high quality 
> performance and team sporting events.
>
>
> The main challenge here is having a big enough network pipe to support 
> getting updates from those 4800 spectators plus the actual events in 
> the center. Assuming just 25 kilobit maximum to update each spectator, 
> that's a potential peak of 120 megabits when everyone stands up 
> together to cheer or wave their pennant, not counting the actual event 
> updates in the center sim.
>
> Also, what is the cost per month of operating 49 dedicated sims? But 
> that cost could be offset if the stadium could function as a temporary 
> affair. Other less important residential sims could be temporarily 
> taken offline in order to run this, the "main event". These would be 
> sold as reduced rate islands, with a free pass for island residents 
> attend shows when the home estates are offline during the event.
>
>
> So, tiny sims have just as much future potential usefulness as the 
> very large sims.
>
> - Scalar Tardis / Dale Mahalko
>
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>
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