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A hypervisor consolidates multiple numbers and multiple types of OSes into a single machine by multiplexing a real machine into a number of virtual machines (VMs). An example the typical application of a hypervisor is server consolidation which uses the same or similar types of VMs and OSes (symmetric). Another application is accommodating different types of OSes (asymmetric): open platform and closed...
In order to make the operating system in education easier to understand and practice, we advise to introduce a kind of nanokernel to the beginner because the concept of nanokernel was to reduce the kernel to basic schedular, interrupt and timer, and let others reside in user space in forms of normal processes. XtratuM as a special nanokernel is a part of OCERA(Open Components for Embedded Real-time...
The need of extensive computing capacity is expanding all the time. Especially in company providing network service, adding servers physically requires much more cost. Also in embedded system, resource is also very limited. That is why virtulization is so popular in research and industry application. A lot of virtulization technique is raised to supply great computing capacity with multiple operating...
The importance of the virtualization in embedded computing area is currently emerging. The virtualization can enhance system flexibility by enabling the concurrent execution of an application OS and a real-time OS (RTOS) on the same processor. L4 microkernel can be used as an efficient hypervisor which provides environment for operating systems virtualization. In order to run the application OSes...
Adaptive computers combine conventional software programmable processors with reconfigurable compute units. We present techniques that allow the high-performance realization of demand-paged, virtually addressed main memory shared between both of these processing elements. Furthermore, we have achieved low-latency communication between software running on the CPU and the reconfigurable compute unit,...
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