The single biggest issue is, in my opinion, security. In a volunteer grid system, the computing software has to run on a computer that belongs to someone and is used for things other than supercomputing. I used to work as a network administrator at Kistler Aerospace, and know just how paranoid folks are about their computers. People are suspicious of anything that might make them stop working.
I´m not talking about the Young Turks in a company. Junior staff is usually excited to try anything new. Unfortunately (and I´m speaking from experience here), this enthusiasm often results in massive computer crashes and all-nighters in which they get to learn things like “How to rebuild a UNIX server” and “Really, really don´t break the Primary Domain Controller if you don´t have a Backup Domain Controller.”Read Full Story