Andrzej Karbowski

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The main purpose of this paper is to describe the design, implementation and possibilities of our object-oriented library of algorithms for dynamic optimization problems. We briefly present library classes for the formulation and manipulation of dynamic optimization problems, and give a general survey of solver classes for unconstrained and constrained(More)
—Efforts to reduce power consumption in telecom-munication networks follow in two mutually related directions – design of a more efficient equipment and development of energy-aware network control strategies and protocols. The paper presents a formulation of two-criteria traffic engineering problem, which takes advantage of energy saving capabilities in(More)
—We present a very simple, free tool for parallelizing calculations under Matlab in multicore and cluster environments. After the installation it does not use any compilers, MEX files, disk files, etc. It is compatible with the old Paralize package, but allows the involved cores/machines to do other jobs when a worker core/machine is not busy.
—The paper compares two formulations of dynamic power management in energy-aware computer networks. In the first approach the only criterion is energy consumption, in the second there is an additional one-the quality of service. It is shown, that the second approach is appropriate when the routing problem with fixed demands is inadmissible. Fortunately, by(More)
Due to the physical processor frequency scaling constraint, current computer systems are equipped with more and more processing units. Therefore, parallel computing has become an important paradigm in the recent years. AMPL is a comprehensive algebraic modeling language for formulating optimization problems. However, AMPL itself does not support defining(More)