PVM stands for “parallel virtual machine”. The aim of this project is a virtual machine that’s able to handle:

• massive parallel threads

• complete control of all resources (memory, cpu time, network traffic)

• a small subset of the ruby-stdlib, that supports everything you need for a networking application

PRuby is not so much a simple interpreter, but more like a running environment / application server A basic configuration sets:

• how much resources from the local host should be used at most.

In network mode:

• how much resources are open to other users

• how much resources should be used from other node

For networking mode to work securely the following is needed:

• Only a limited count of different users can be allowed to access to node (at any moment AND over infinity)

• Disk access is only available for a limited set of functions

• Each user has his own sandbox with limited disk-space and ram-space

• Disk-space is granted, but not ensured, so remote data can be destroyed or unavailable