ASC Image Library
Advanced Architecture—BlueGene/L Simulation
In the images above, the IBM BlueGene/L supercomputer at Lawrence Livermore National Laboratory, with 131,072 CPUs connected by multiple high-performance networks, enables a completely new class of physical problems to be investigated. Excellent performance and scalability have been demonstrated on a classical molecular dynamics code, SPaSM, on BlueGene/L. Simulations involving up to 160 billion atoms on 65, 536 processors are reported, consistently achieving 24.4 - 25.5 teraOPS for the commonly used Lennard-Jones 6-12 pairwise interaction potential. These images show nucleation, growth, and linkup of voids that takes place between 36 ps and 48 ps of simulation time. (Courtesy Los Alamos National Laboratory.)