BEGIN:VCALENDAR PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN VERSION:2.0 BEGIN:VEVENT DTSTART:20151117T163000Z DTEND:20151117T171500Z LOCATION:Ballroom DEFG DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: The next flagship supercomputer in Japan, replacement of K supercomputer, is being designed toward general operation in 2020. Compute nodes, based on a manycore architecture, connected by a 6-D mesh/torus network is considered. A three level hierarchical storage system is taken into account. A heterogeneous operating system, Linux and a light-weight kernel, is designed to build suitable environments for applications. It can not be possible without codesign of applications that the system software is designed to make maximum utilization of compute and storage resources. After a brief introduction of the post K supercomputer architecture, the design issues of the system software will be presented. Two big-data applications, genome processing and meteorological and global environmental predictions will be sketched out as target applications in the system software design. Then, it will be presented how these applications' demands affect the system software. SUMMARY:System Software in Post K Supercomputer PRIORITY:3 END:VEVENT END:VCALENDAR