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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.
New Parallelization Model of Sequential Monte Carlo Analysis with Prediction-Correction Computing
SESSION: Poster Reception
EVENT TYPE: Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Eiji Tomiyama, Hiroshi Koyama, Katsumi Hagita
ROOM:New Orleans Theater Lobby
ABSTRACT:
Monte Carlo (MC) search with Metropolis judgment has been used widely to solve inverse problems; in particular, reverse Monte Carlo (RMC) analysis has been shown to make a possible configration of particles in terms of the structure factor S(q) obtained by X-ray scattering experiments. In general, MC search proceeds sequentially, because each judgement of the MC trial depends on its previous state. In the present study, we have developed a new “SimpleRMC” parallel code for RMC analysis for a system with millions of particles. In this code, two hotspots are identified and optimized for the histogram h(r) and difference of histogram Δh(r) calculations. For the histogram kernel, we achieved 339 Tflops performance (32.3% of the peak) on 8,192 nodes of the K computer using a 33,554,432-particle system. This newly developed “prediction–correction” method improves both the parallel performance of the Δh(r) calculation and its elapse time.
Chair/Author Details:
Eiji Tomiyama - Research Organization for Information Science and Technology
Hiroshi Koyama - Research Organization for Information Science and Technology
Katsumi Hagita - National Defense Academy
Click here to download .ics calendar file
