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Chameleon: Why Computer Scientists Need a Cloud of Their Own

HPC Wire (05/05/16) Tiffany Trader

The U.S. National Science Foundation-funded Chameleon cloud testbed in less than a year of operation has contributed to innovative research in high-performance computing (HPC) containerization, exascale operating systems, and cybersecurity. Chameleon principal investigator Kate Keahey, a Computation Institute fellow at the University of Chicago, describes the tool as “a scientific instrument for computer science where computer scientists can prove or disprove hypotheses.” Co-principal investigator Dan Stanzione, executive director of the Texas Advanced Computing Center at the University of Texas at Austin, says Chameleon can meet the oft-denied request from the software or computer science research community to make fundamental changes to the way the machine operates. With Chameleon, users can configure and test distinct cloud architectures on various problems, such as machine learning and adaptive operating systems, climate modeling, and flood prediction. Keahey says support for research at multiple scales was a key design element of the instrument. One project using Chameleon involves comparing performance between containerization and virtualization as they apply to HPC applications. Keahey says it is “a good example of a project that really needs access to scale.” Another major Chameleon user is the Argo Project, an initiative for designing and prototyping an exascale operating system and runtime.

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