[Opensim-users] OpenSim and Multi-core/Multi-processor Systems

[Justin Clark-Casey]

I would say more cores will give you great but diminishing returns.  It's practically impossible, for instance, to run 
OpenSimulator in any serious way with a single core.  And the old rule of thumb was to have a minimum of two cores and 
one core per region [1], though this was before the performance improvements in 0.7.6 and also depends heavily on how 
much physics/avatar/script load the region has.

[1] http://opensimulator.org/wiki/Performance#CPU

On 28/04/14 15:47, Maxwell, Douglas wrote:
> Hi Austin,  the reason I recommend you configure multiple processors for MIAB is because of all the different processes running in the VM.  In addition to OpenSim, there is Apache, MySQL, etc...  The extra processors help balance load.
>
> The only time I've seen multiprocessor systems benefit OpenSim was with our DGS experiments.  Currently your best bet for performance enhancement with regular OpenSimulator is with vertical scaling (faster computer).  Hope this helps.
>
> Douglas Maxwell, MSME
> Science and Technology Manager
> Virtual World Strategic Applications
> U.S. Army Research Lab
> Simulation & Training Technology Center (STTC)
> (c) (407) 242-0209
> NEW DoD Email:  Douglas.Maxwell3.civ at mail.mil
> ________________________________________
> From: opensim-users-bounces at opensimulator.org [opensim-users-bounces at opensimulator.org] On Behalf Of Ai Austin [ai.ai.austin at gmail.com]
> Sent: Saturday, April 26, 2014 9:13 AM
> To: OpenSim-Users
> Subject: [Opensim-users] OpenSim and Multi-core/Multi-processor Systems
>
> I recently saw a suggestion from the MOSES team for their MOSES in a
> Box that two processor systems were recommended. That got me
> wondering whether OpenSim can or does use multi-core and
> multi-processor systems if they are in the same computer/server?  So
> would dual processors (2 rather than 1 say) and adding cores (4 or 6
> or 8?) for each processor make a difference or is it better to go for
> higher powdered and faster clock speed with a single processor.
>
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at opensimulator.org
> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at opensimulator.org
> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users
>


-- 
Justin Clark-Casey (justincc)
OSVW Consulting
http://justincc.org
http://twitter.com/justincc