by D. Grice,
H. Brandt,
C. Wright,
P. McCarthy,
A. Emerich,
T. Schimke,
C. Archer,
J. Carey,
P. Sanders,
J. A. Fritzjunker,
S. Lewis,
and P. Germann
In this paper, we discuss the impact of petascale computing and the
major issues to getting beyond a petaflops. We describe IBM
approaches to petascale computing but with a major focus on the
Los Alamos National Laboratory Roadrunner machine. We
provide an overview of the hardware and software structures,
focusing on the new triblade compute node architecture and the
corresponding data control and synchronization software support
to enable high-performance computing applications on this
architecture. The fundamental technology drivers and issues for
petascale computing and beyond are software complexity, energy
efficiency, and system reliability, availability, and serviceability.
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