Complex sentence: Plans to create a supercomputer capable of 20 petaFLOPS at ORNL were in place as far back as 2005, when Jaguar was built, however the hybrid CPU/GPU architecture was not finalised until 2010 and the name "Titan" not until 2011.
Split into simpler sentences: Plans to create a supercomputer capable of 20 petaFLOPS at ORNL were in place as far back as 2005, when Jaguar was built. However, the hybrid CPU/GPU architecture was not finalised until 2010 and the name "Titan" not until 2011.