Density functional calculations with a plane-wave basis set are widely used in materials
science. Due to recent developments in high-performance computers, the number of nodes …

This paper describes the new hardware-based streaming-aggregation capability added to
Mellanox's Scalable Hierarchical Aggregation and Reduction Protocol in its HDR InfiniBand …

Silicon nanowires are potentially useful in next-generation field-effect transistors, and it is
important to clarify the electron states of silicon nanowires to know the behavior of new …

MPI includes all processes in MPI_COMM_WORLD; this is untenable for reasons of scale,
resiliency, and overhead. This paper offers a new approach, extending MPI with a new …

The K computer, released on September 29, 2012, is a large-scale parallel supercomputer
system consisting of 82,944 compute nodes. We have been able to resolve a significant …

In the last decade there has been a surge in the number of big science projects interested in
achieving a comprehensive understanding of the functions of the brain, using Spiking …

Applying machine learning methods in scenarios involving smart homes is a complex task.
The many possible variations of sensors, feature representations, machine learning …

Modern supercomputers with torus networks allow each node to simultaneously pass
messages on all of its links. However, most collective algorithms are designed to only use …

This work analyses different communication modes in applications of supercomputing,
proposes a communication dynamic performance model based on topology awareness, and …

Optimization techniques of a plasma turbulence simulation code GKV for improved strong
scaling are presented. This work is motivated by multi-scale plasma turbulence extending …