sentences:  To accomplish this, the OLCF has developed and implemented a three-pronged strategy for building and engaging the research communities to define critical computational needs, work with the manufacturers of HPC resources to express and meet those needs, and develop the tools and algorithms to best take advantage of the HPC resources.OLCF's fastest computer, Summit, is a 200 Petaflop IBM OLCF-4 supercomputer with a CPU/GPU hybrid architecture.The combination of CPUs and GPUs will allow Titan and future systems to overcome power and space limitations inherent in previous generations of high-performance computers.