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NCAR Awards 42 Million Core Hours on Yellowstone Supercomputer

Nine science projects were recently chosen to receive computational time and storage space on the Yellowstone supercomputer in Cheyenne. The most recent recommended allocations total 42.6 million core hours, 270 terabytes of archival storage, and 47,000 hours on data analysis and visualization systems, Shader says. To provide some perspective on what these numbers mean, here are some useful comparisons. In simplest terms, Yellowstone can be thought of as 72,576 personal computers that are cleverly interconnected to perform as one computer. The computational time allocated is equivalent to the use of the entire supercomputer for 24.5 days­, 24 hours a day. The 270 terabytes of storage would be enough to store the entire printed collection of the U.S. Library of Congress more than 20 times. Each project was critically reviewed by an external panel of experts and evaluated on the experimental design, computational effectiveness, efficiency of resource use, and broader impacts such as how the project involves both UW and NCAR researchers; strengthens UW’s research capacity; enhances UW’s computational programs; or involves research in a new or emerging field. To read more, please visit

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