Ross R, Amvrosiadis G, Carns P et al. Mochi: Composing data services for high-performance computing environments. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 35(1): 121–144 Jan. 2020. DOI 10.1007/s11390-020-9802-0 Mochi: Composing Data Services for High-Performance Computing Environments Robert B. Ross1, George Amvrosiadis2, Philip Carns1, Charles D. Cranor2, Matthieu Dorier1, Kevin Harms1 Greg Ganger2, Garth Gibson3, Samuel K. Gutierrez4, Robert Latham1, Bob Robey4, Dana Robinson5 Bradley Settlemyer4, Galen Shipman4, Shane Snyder1, Jerome Soumagne5, and Qing Zheng2 1Argonne National Laboratory, Lemont, IL 60439, U.S.A. 2Parallel Data Laboratory, Carnegie Mellon University, Pittsburgh, PA 15213, U.S.A. 3Vector Institute for Artificial Intelligence, Toronto, Ontario, Canada 4Los Alamos National Laboratory, Los Alamos NM, U.S.A. 5The HDF Group, Champaign IL, U.S.A. E-mail:
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[email protected] Received July 1, 2019; revised November 2, 2019. Abstract Technology enhancements and the growing breadth of application workflows running on high-performance computing (HPC) platforms drive the development of new data services that provide high performance on these new platforms, provide capable and productive interfaces and abstractions for a variety of applications, and are readily adapted when new technologies are deployed. The Mochi framework enables composition of specialized distributed data services from a collection of connectable modules and subservices.