Columbia is a supercomputer built by Silicon Graphics for NASA. The supercomputer was installed at the NASA Advanced Supercomputing facility in 2004. According to the TOP500 list, it is currently the eighth fastest computer in the world running at 51.87 teraflops, or 51.87 trillion floating point calculations per second. It is composed of twenty SGI Altix 3000 nodes each of which have 512 Intel Itanium 2 processors bringing the total number of processors to 10,240. It was named in honour of the crew of the space shuttle Columbia.