The nordugrid is a collaboration aiming at development, maintenance and support of the free grid middleware, known as the advanced resource connector (arc).

for grid computing, a major challenge is to keep the working environments homogeneous between the sites. to help this situation, runtime environments have been developed. those can be added to or removed from a site, and this janitor service helps automating this process.

the janitor is a recent development and the community to prepare catalogues of dynamically installable packages still needs to evolve.