The increasing numbers of cores, shared caches and memory nodes within machines
introduces a complex hardware topology. High-performance computing applications now …

Many modern clusters are being equipped with multiple GPUs per node to achieve better
compute density and power efficiency. However, moving data in/out of GPUs continues to …

Program reduction is a highly practical, widely demanded technique to help debug
language tools, such as compilers, interpreters and debuggers. Given a program P that …

The multiplication of cores in today's architectures raises the importance of intra-node
communication in modern clusters and their impact on the overall parallel application …

In this paper, we present the Tianhe-2 interconnect network and message passing services.
We describe the architecture of the router and network interface chips, and highlight a set of …

Increasingly severe I/O bottlenecks on High-End Computing machines are prompting
scientists to process simulation output data online while simulations are running and before …

Collective operations are used in MPI programs to express common communication
patterns, collective computations, or synchronization. In many collectives, such as …

In recent years, the number of CPUs per platform has continuously increased, affecting
almost all segments of the computer market. Because of this trend, many researchers have …

Interconnection network plays an important role in scalable high performance computer
(HPC) systems. The TH Express-2 interconnect has been used in MilkyWay-2 system to …

Shared memory is among the most common approaches to implementing message passing
within multicorenodes. However, current shared memory techniques donot scale with …