SCHEDULE: NOV 10-16, 2012
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Advances in Gyrokinetic Particle-in-Cell Simulation for Fusion Plasmas to Extreme Scale
SESSION: Research Poster Reception
EVENT TYPE: Posters and Electronic Posters
TIME: 5:15PM - 7:00PM
SESSION CHAIR: Torsten Hoefler
AUTHOR(S):Bei Wang, Stephane Either, William Tang, Khaled Ibrahim, Kamesh Madduri, Sam Williams
ROOM:East Entrance
ABSTRACT:
The Gyrokinetic Particle-in-cell (PIC) method has been successfully applied in studies of low-frequency microturbulence in magnetic fusion plasmas. While the excellent scaling of PIC codes on modern computing platforms is well established, significant challenges remain in achieving high on-chip concurrency for the new path to exascale systems. In addressing associated issues, it is necessary to deal with the basic gather-scatter operation and the relatively low computational intensity in the PIC method. Significant advancements have been achieved in optimizing gather-scatter operations in the gyrokinetic PIC method for next-generation multi-core CPU and GPU architectures. In particular, we will report on new techniques that improve locality, reduce memory conflict, and efficiently utilize shared memory on GPUs. Performance benchmarks on two high-end computing platforms -- the IBM BlueGene/Q (Mira) system at the Argonne Leadership Computing Facility and the Cray XK6 (Titan Dev) with the latest GPU at Oak Ridge Leadership Computing Facilitywill be presented.
Chair/Author Details:
Torsten Hoefler (Chair) - ETH Zurich
Bei Wang - Princeton University
Stephane Either - Princeton Plasma Physics Laboratory
William Tang - Princeton University
Khaled Ibrahim - Lawrence Berkeley National Laboratory
Kamesh Madduri - Lawrence Berkeley National Laboratory
Sam Williams - Lawrence Berkeley National Laboratory
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Advances in Gyrokinetic Particle-in-Cell Simulation for Fusion Plasmas to Extreme Scale
SESSION: Research Poster Reception
EVENT TYPE:
TIME: 5:15PM - 7:00PM
SESSION CHAIR: Torsten Hoefler
AUTHOR(S):Bei Wang, Stephane Either, William Tang, Khaled Ibrahim, Kamesh Madduri, Sam Williams
ROOM:East Entrance
ABSTRACT:
The Gyrokinetic Particle-in-cell (PIC) method has been successfully applied in studies of low-frequency microturbulence in magnetic fusion plasmas. While the excellent scaling of PIC codes on modern computing platforms is well established, significant challenges remain in achieving high on-chip concurrency for the new path to exascale systems. In addressing associated issues, it is necessary to deal with the basic gather-scatter operation and the relatively low computational intensity in the PIC method. Significant advancements have been achieved in optimizing gather-scatter operations in the gyrokinetic PIC method for next-generation multi-core CPU and GPU architectures. In particular, we will report on new techniques that improve locality, reduce memory conflict, and efficiently utilize shared memory on GPUs. Performance benchmarks on two high-end computing platforms -- the IBM BlueGene/Q (Mira) system at the Argonne Leadership Computing Facility and the Cray XK6 (Titan Dev) with the latest GPU at Oak Ridge Leadership Computing Facilitywill be presented.
Chair/Author Details:
Torsten Hoefler (Chair) - ETH Zurich
Bei Wang - Princeton University
Stephane Either - Princeton Plasma Physics Laboratory
William Tang - Princeton University
Khaled Ibrahim - Lawrence Berkeley National Laboratory
Kamesh Madduri - Lawrence Berkeley National Laboratory
Sam Williams - Lawrence Berkeley National Laboratory
Click here to download .ics calendar file