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Virtual machine images and instances (VMs) in cloud computing centres are typically designed as isolation containers for applications, databases and networking functions. In order to build complex distributed applications, multiple virtual machines must be connected, orchestrated and combined with platform and infrastructure services from the hosting environment. There are several reasons why sometimes it is beneficial to introduce a new layer, Cloud-in-a-VM, which acts as a portable management interface to a cluster of VMs. We reason about the benefits and present our Cloud-in-a-VM implementation called Nested Cloud which allows consumers to become light-weight cloud operators on demand and reap multiple advantages, including fully utilised resource allocations. The practical usefulness and the performance of the intermediate cloud stack VM are evaluated in a marketplace scenario.
The exponential growth in use of large deep neural networks has accelerated the need for training these deep neural networks in hours or even minutes. This can only be achieved through scalable and efficient distributed training, since a single node/
Denial of Service (DoS) attacks frequently happen on the Internet, paralyzing Internet services and causing millions of dollars of financial loss. This work presents NetFence, a scalable DoS-resistant network architecture. NetFence uses a novel mecha
We present a new sample of strong gravitational lens systems where both the foreground lenses and background sources are early-type galaxies. Using imaging from HST/ACS and Keck/NIRC2, we model the surface brightness distributions and show that the s
We observed a new mechanism for vortex nucleation in Bose-Einstein condensates (BECs) subject to synthetic magnetic fields. We made use of a strong synthetic magnetic field initially localized between a pair of merging BECs to rapidly create vortices
The application of high-performance computing (HPC) processes, tools, and technologies to Controlled Unclassified Information (CUI) creates both opportunities and challenges. Building on our experiences developing, deploying, and managing the Researc