Joel Nider

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The traditional "trap and emulate" I/O paravirtualization model conveniently allows for I/O interposition, yet it inherently incurs costly guest-host context switches. The newer "sidecore" model eliminates this overhead by dedicating host (side)cores to poll the relevant guest memory regions and react accordingly without context switching. But the(More)
Containers are a convenient way of encapsulating and isolating applications. They incur less overhead than virtual machines and provide more flexibility and versatility to improve server utilization. Many new cloud applications are being written in the microservices style to take advantage of container technologies. Each component of the application can be(More)
Storage class memory (SCM) is an emerging class of memory devices that are both byte addressable, and persistent. There are many different technologies that can be considered SCM, at different stages of maturity. Examples of such technologies include NVDIMM-N, PCM, SttRAM, Racetrack, FeRAM, and others. Currently, applications rely on storage technologies(More)
The cloud computing paradigm has recently emerged as a convenient solution for running different workloads on highly parallel and scalable infrastructures. One major appeal of cloud computing is its capability of abstracting hardware resources and making them easy to use. Conversely, one of the major challenges for cloud providers is the energy efficiency(More)
Para-virtualization is the leading approach in IO device virtualization. It allows the hypervisor to interpose on and inspect a virtual machine's I/O traffic at run-time. Examples of such interfaces are KVM's virtio [6] and VMWare's VMXNET [7]. Current implementations of virtual I/O in the hypervisor have been shown to have performance and scalability(More)
The continuous evolution of information and communication technology has led to a change in the adopted computing paradigms over time. Cloud computing is an emerging paradigm in which users, depending on their specific requirements, access to a shared pool of computing resources dynamically allocated. Cloud computing represents, with respect to Grid(More)
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