.Net open source grid computation library

I'm looking for an open source (FLOSS preferab开发者_运维百科le) library for grid/distributed computing with C#/.Net.

I'm aware of Alchemi.Net and NGrid, but I notice that neither have been updated in the last 4 or 5 years.

Is anyone aware of either a purely .Net framework, or a good .Net wrapper around a solid grid computing framework, preferably one that is well maintained and has an active community?

I've been looking at Qizmt, but admittedly haven't had a chance to try it yet. It follows the MapReduce model.

You can look ICE platform, it has IceGrid service and set of feature that you may found useful in a real world distributed computing.