IBM Blue Gene/Q system software stack

Authors:
K. D. Ryu;T. A. Inglett;R. Bellofatto;M. A. Blocksome;T. Gooding;S. Kumar;A. R. Mamidala;M. G. Megerian;S. Miller;M. T. Nelson;B. Rosenburg;B. Smith;J. Van Oosten;A. Wang;R. W. Wisniewski
Affiliations:
IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY;IBM Systems and Technology Group, Rochester, MN;IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY;IBM Engineering and Technology Services Division, Rochester, MN;IBM Software Group, Rochester, MN;IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY;IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY;IBM Software Group, Rochester, MN;IBM Software Group, Rochester, MN;IBM Engineering and Technology Services Division, Rochester, MN;IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY;IBM Systems and Technology Group, Rochester, MN;IBM Systems and Technology Group, Rochester, MN;IBM Toronto Laboratory, Markham, Ontario, Canada;IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY
Venue:
IBM Journal of Research and Development
Year:
2013

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Abstract

The principal focus areas for system software on the IBM Blue Gene®/Q include ultrascalability and high reliability while delivering the full performance capability of the hardware to applications. The Blue Gene/Q system software has achieved these goals while adding functionality and flexibility compared with previous versions of Blue Gene®. Whereas part of the software stack was improved with innovative evolutionary progress, such as unified sub-block partitioning and the ability to overcommit hardware threads, other areas, such as transactional memory and speculative execution, represent a revolutionary step forward. In this paper, we describe the overall software architecture of Blue Gene/Q. We then describe each of the main components of the software stack. In each area, we focus on the major enhancements introduced in the Blue Gene/Q system software stack.