This paper presents an in-depth analysis of the impact of system noise on large-scale
parallel application performance in realistic settings. Our analytical model shows that not …

Direct device assignment enhances the performance of guest virtual machines by allowing
them to communicate with I/O devices without host involvement. But even with device …

Today's high performance computing systems are typically managed and operated by
individual organizations in private. Computing demand is fluctuating, however, resulting in …

Operating system noise has been shown to be a key limiter of application scalability in high-
end systems. While several studies have attempted to quantify the sources and effects of …

Nowadays, media content can be delivered via diverse broadband and broadcast
technologies. Although these different technologies have somehow become rivals, their …

It is often assumed that to maximize the performance of a multithreaded application, the
number of threads created should equal the number of cores. While this may be true for …

Climate and weather can be predicted statistically via geospatial Maximum Likelihood
Estimates (MLE), as an alternative to running large ensembles of forward models. The MLE …

Many distributed workloads in today's data centers are written in managed languages such
as Java or Ruby. Examples include big data frameworks such as Hadoop, data stores such …

The overhead of a context switch is typically associated with multitasking, where several
applications share a processor. But even if only one runnable application is present in the …

We investigate operating system noise, which we identify as one of the main reasons for a
lack of synchronicity in parallel applications. Using a microbenchmark, we measure the …