OpenSim’s physical prims can now be up to 64 meters

Over the past two months, a number of bug fixes and improvements have made it into the OpenSim code base, according to core developer Justin Clark-Casey.

The highlight is that the maximum physical prim size has been increased from 10 meters to 64 meters. The change was made by Intel developer Robert Adams,  based on a suggestion from Lani Global, who runs a popular science-fiction themed region and role playing event on OSgrid.

(Image courtesy Lani Global.)

(Image courtesy Lani Global.)

Previously, regular prims could be up to 256 meters in size, but issues related to OpenSim’s physics engine prevented the developers from changing the default limits on the physical prims.

Individual region owners or hosting companies could make the change manually, but this was inconvenient or impractical for many users.

“Currently, the content creators can not deliver all their wonderful designs for vehicles, and users can’t modify or convert their existing vehicles, if even one prim in the vehicle is larger than 10 meters,” said Lani Global in the discussion. “Ten meters is way too small for the design of multi-passenger physical vehicles,  especially mesh and sculpty vehicles, yachts, ships, airplanes, and spacecraft built to-scale.”

You can get more information about this in a discussion about this topic on OpenSim’s main wiki site.

This change is part of the development version of OpenSim, and not yet part of the official release,, which came out in February.



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Maria Korolov

Maria Korolov is editor and publisher of Hypergrid Business. She has been a journalist for more than twenty years and has worked for the Chicago Tribune, Reuters, and Computerworld and has reported from over a dozen countries, including Russia and China. Follow me on Twitter @MariaKorolov.

6 Responses

  1.' hack13 says:

    How is this really news? I have been enabling people to do 1024x1024x1024 since 0.7.5

  2.' SkyLifeGrid says:

    We just added our own 10×10 100 sim mega and it works great but I am super excited about the upgrades with 0.8 and ver regions and the physics upgrade now I can get my massive yachts to drive !!keep up the great work guys .

  3.' Lani Global says:

    Thanks, Maria, for highlighting the new 64 meter standard for physical vehicles in OpenSim. It is important for content creators to have practical and reasonable standards to work with, in order to design viable products that perform uniformly throughout the user community. We look forward to seeing some very interesting multi-passenger vehicle builds, with the larger sizes that are possible now. Looking at OpenSim’s mantis bug tracking system, I note that about 95% of all the software bugs that I’ve worked on or reported on during the past 3 years have been fixed. The progression of development is really quite outstanding for such an open source volunteer project. Many thanks go to the coders who have made this all possible. Hug a dev today!
    -Lani Global