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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.
Performance Model for Large-Scale Neural Simulations with NEST
SESSION: Poster Reception
EVENT TYPE: Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Wolfram Schenck, Andrew V. Adinetz, Yury V. Zaytsev, Dirk Pleiter, Abigail Morrison
ROOM:New Orleans Theater Lobby
ABSTRACT:
NEST is a simulator for large networks of spiking point neurons for neuroscience research. A typical NEST simulation consists of two stages: first the network is wired up, and second the dynamics of the network is simulated. Our work aims at developing a performance model for the second stage, the simulation stage, by a semi-empirical approach. We collected measurements of the runtime performance of NEST under varying parameter settings on the JUQUEEN supercomputer at Forschungszentrum Jülich, and subsequently fitted a theoretical model to this data. This performance model defines the simulation time as weighted sum of algorithmic complexities which have been identified in the NEST source code. After parameter fitting, the coefficient of determination on the training data is close to 1.0, and the model can be used to successfully extrapolate NEST simulation times. Furthermore, recommendations for algorithmic improvements of the NEST code can be derived from the modeling results.
Chair/Author Details:
Wolfram Schenck - Juelich Supercomputing Center
Andrew V. Adinetz - Juelich Supercomputing Center
Yury V. Zaytsev - Juelich Supercomputing Center
Dirk Pleiter - Juelich Supercomputing Center
Abigail Morrison - Juelich Supercomputing Center
Click here to download .ics calendar file
