BEGIN:VCALENDAR PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN VERSION:1.0 BEGIN:VEVENT DTSTART:20131120T223000Z DTEND:20131120T230000Z LOCATION:401/402/403 DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: Reliable predictive simulation capability addressing confinement properties in magnetically confined fusion plasmas is critically-important for ITER, a 20 =0Abillion dollar international burning plasma device under construction in France. =0AThe complex study of kinetic turbulence, which can severely limit the energy confinement and impact the economic viability of fusion systems, requires simulations at extreme scale for such an unprecedented device size. Our newly optimized, global, "ab initio" particle-in-cell code solving the nonlinear equations underlying gyrokinetic theory achieves excellent performance with respect to "time to solution" at the full capacity of the IBM Blue Gene/Q on 786,432 cores of "Mira" at ALCF and recently of the 1,572,864 cores of "Sequoia" at LLNL. Recent multithreading and domain decomposition optimizations in the new GTC-P code represent critically important software advances for modern, low memory per core systems by enabling routine simulations at unprecedented size (130 million grid points ITER-scale) and resolution (65 billion particles). SUMMARY:Kinetic Turbulence Simulations at Extreme Scale on Leadership-Class Systems PRIORITY:3 END:VEVENT END:VCALENDAR