The eXtreme Science and Engineering Discovery Environment (xsede.org) supports the National Science Foundation-funded national cyberinfrastructure of supercomputers, cloud systems, and data storage systems.
Open Science Grid
The OSG is a high throughput distributed computing system used primarily for science and biology research. (High throughput computing uses thousands of individual, internet-connected computers to solve very large scientific challenges.)
National Center for Genome Analysis Support
PTI’s very own NCGAS is federally funded and supports US researchers studying genomics.