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About the EMVL

Modeling detailed molecular interactions

Modeling detailed molecular interactions
Proteins may bind toxins or drugs which imitate the chemical characteristics of their natural ligands. By modeling detailed molecular interactions, scientists can predict which chemicals are most likely to bind to receptors such as the Estrogen Receptor shown in this image.

Welcome to EPA's Environmental Modeling and Visualization Laboratory (EMVL) Web site. Formerly called the National Environmental Supercomputing Center (NESC), the EMVL operates as part of the Agency's National Computer Center in Research Triangle Park, North Carolina. EMVL provides High Performance Computing (HPC) and visualization resources dedicated solely for advancing environmental research, as part of US EPA's mission to protect the environment and human health.

The EMVL began operations in October 1992 with a Cray YMP. In 1994, this computer was replaced with a Cray C94 supercomputer. In July 1995, a Cray T3D parallel machine was added. In June 1999, the EMVL made a huge advance in its parallel computing capability by acquiring a Cray T3E-1200 parallel processing supercomputer. In January 2001, EMVL added a two-node (8-processor/node) IBM SP high-performance computing system, which was upgraded to three, 16-processor nodes in FY2002.

As machines exceeded their service life, they were decommissioned and replaced by newer systems. In FY2007, EMVL installed an SGI Altix 4700, containing 192 CPUs and 768GB of shared memory, with two direct-attached file systems providing a total of 57.2 TB of usable file space.

In addition to HPC resources, the EMVL also provides technical support to scientists in the areas of computational modeling and visualization in areas ranging from computation toxicology to meso-scale atmospheric modeling.



National Computer Center in the Snow.

US EPA's National Computer Center in Research Triangle Park, NC, home to the National Environmental Scientific Computing Center. It doesn't happen often, but as you can see in this photograph, we do occasionally get significant snow fall in central North Carolina.



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