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SCHEDULE: NOV 16-21, 2014
When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.
Fail-in-Place Network Design: Interaction between Topology, Routing Algorithm and Failures
SESSION: Hardware Vulnerability and Recovery
EVENT TYPE: Papers
TIME: 2:00PM - 2:30PM
SESSION CHAIR: Alison Kennedy
AUTHOR(S):Jens Domke, Torsten Hoefler, Satoshi Matsuoka
ROOM:393-94-95
ABSTRACT:
The growing system size of high performance computers results in a steady
decrease of the mean time between failures. Exchanging network components
often requires whole system downtime which increases the cost of failures.
In this work, we study a fail-in-place strategy where broken network elements
remain untouched. We show, that a fail-in-place strategy is feasible for today’s
networks and the degradation is manageable, and provide guidelines for the
design. Our network failure simulation toolchain allows system designers to
extrapolate the performance degradation based on expected failure rates, and
it can be used to evaluate the current state of a system. In a case study of
real-world HPC systems, we will analyze the performance degradation
throughout the system’s lifetime under the assumption that faulty network
components are not repaired, which results in a recommendation to change
the used routing algorithm to improve the network performance as well as the
fail-in-place characteristic.
Chair/Author Details:
Alison Kennedy (Chair) - Edinburgh Parallel Computing Centre
Jens Domke - Tokyo Institute of Technology
Torsten Hoefler - ETH Zurich
Satoshi Matsuoka - Tokyo Institute of Technology
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