NASA to build 10,240-processor Linux computer:
NASA Calls it Project Columbia. The 10,240-processor system will be used to design equipment, simulate future space missions and model weather patterns. The Ames system uses 512-processor nodes, each of which will have more than 1,000 gigabytes of memory.
Linux creator Linus Torvalds said in an email interview "Scaling up to ... 512 CPU's is pretty damn studly, Putting 20 of them in a cluster and making them be programmable as a single machine is pretty hot."