Over the past few years we have witnessed rapid advancements in ICT, which in turn has led, in the industry, to a staggering growth in the number and diversity of computer and networking solutions. As a result, academic institutions and professional training organizations face serious challenges in exposing students to many different computing environments while making efficient use of limited ...

In today‟s fast advancing technology, virtualization has presented the possibility of consolidating unused/underutilized resources into one physical component. This comes with benefits such as saving costs, hardware independence and improving security by isolation; it is no wonder virtualization is gradually being implemented in every aspect of the technology world. A virtualized system is able...

In many data centers, server racks are highly underutilized. Rack slots are left empty to keep the sum of the server nameplate maximum power below the power provisioned to the rack, while the servers placed in the rack cannot make full use of available rack power. The root cause of this rack underutilization is that the server nameplate power is often much higher than can be reached in practice...

Recent operating systems (OSs) have adopted a defense mechanism called kernel page table isolation (KPTI) for protecting the from all attacks that break address space layout randomization (KASLR) using various side-channel analysis techniques. In this paper, we demonstrate KASLR can still be broken, even with latest OSs where KPTI is applied. particular, present novel memory-sharing-based attac...

Automated approach boosts agility, reduces risks of security breaches and regulatory non-compliance, and improves operating efficiency

Modern data analysis applications for 2D/3D data samples require complex visual output features which are often based on OpenGL, a multi-platform API for rendering vector graphics. They demand special computing workstations with a corresponding CPU and GPU power, enough main memory and fast network interconnects for a performant remote data access. For this reason, users depend heavily on avail...

An execution environment consisting of virtual machines (VMs) interconnected with a virtual overlay network can use the naturally occurring traffic of an existing, unmodified application running in the VMs to measure the underlying physical network. Based on these characterizations, and characterizations of the application’s own communication topology, the execution environment can optimize the...