Albert Alexandrov

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We present a new model of parallel computation—the LogGP model—and use it to analyze a number of algorithms, most notably, the single node scatter (one-to-all personalized broadcast). The LogGP model is an extension of the LogP model for parallel computation which abstracts the communication of fixed-sized short messages through the use of four parameters:(More)
We present a new model of parallel computation—the LogGP model—and use it to analyze a number of algorithms, most notably, the single node scatter (one-to-all personalized broadcast). The LogGP model is an extension of the LogP model for parallel computation [CKP+93] which abstracts the communication of fixed-sized short messages through the use of four(More)
In this article we show how to extend a wide range of functionality of standard operation systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then(More)
The Internet, in particular the WorldWide Web , continues to expand at an amazing pace. We propose a new infrastructure, SuperWeb, to harness global resources, such as CPU cycles or disk storage, and make them available to every user on the Internet. SuperWeb has the potential for solving parallel supercomputing applications involving thousands of(More)
In this paper we show how to extend the functionality of standard operating systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then modified to(More)
The recent rapid growth of the Internet made a vast pool of resources available globally and enabled new kinds of applications raising the need for transparent remote access and for protected computing. Currently users need specialized software such as web browsers or FTP clients to access global resources. It is desirable to instead provide OS support for(More)
We present a new model of parallel computation|the LogGP model|and use it to analyze a number of algorithms, most notably, the single node scatter (one-to-all personalized broadcast). The LogGP model is an extension of the LogP model for parallel computation CKP + 93] which abstracts the communication of xed-sized short messages through the use of four(More)
Purpose To present the results in the area of modern computer-aided control system design tools relating to system identification. Design/methodology/approach The finite-frequency identification method was designed for the needs of active identification. The test signal represents the sum of harmonics with automatically tuned (self-tuned) amplitudes and(More)
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