ICS

Currently, high performance systems are mostly used by splitting them into fixed-size partitions which are completely owned and operated by applications. Hardware architecture designs strive to remove the operating system from the critical path, for ...

Linux^®, or more specifically, the Linux API, plays a key role in HPC computing. Even for extreme-scale computing, a known and familiar API is required for production machines. However, an off-the-shelf Linux distribution faces challenges at extreme ...

Page-based memory management (paging) is utilized by most of the current operating systems (OSs) due to its rich features such as prevention of memory fragmentation and fine-grained access control. Page-based virtual memory, however, stores virtual to ...

We describe the design, implementation, and evaluation of emulated hardware transactional memory, specifically the Intel Haswell Restricted Transactional Memory (RTM) architectural extensions for x86/64, within a virtual machine monitor (VMM). Our ...

Parallel programming has always been difficult due to the complexity of hardware and the diversity of applications. Although significant progress has been achieved with the remarkable efforts of researchers in academia and industry, attaining high ...

New many-core architectures such as Intel Xeon Phi offer applications significantly higher power efficiency than conventional multi-core processors. However, while this processor's compute and communication performance is an excellent match for MPI ...

Simultaneous multithreading is a technique that can improve performance when running parallel applications on the Intel Xeon Phi co-processor. Selecting the most efficient thread count is however non-trivial, as the potential increase in efficiency has ...

A number of novel decentralized systems have recently been developed to address challenges of scale in large distributed systems. The suitability of such systems for meeting the challenges of scale in high performance computing (HPC) systems is unclear, ...

Operating system jitter is one of the major causes of runtime overhead in applications of high performance computing. Jitter results from the execution of services by the operating system kernel, such as interrupt handling and tasklets, or the execution ...

Gossip algorithms can provide online information about the availability and the state of the resources in supercomputers. These algorithms require minimal computing and storage capabilities at each node and when properly tuned, they are not expected to ...