Ireneusz Szczesniak

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A software package, dxhdf5, for importing HDF5 data into OpenDX is discussed. HDF5 is a hierarchical, self-describing data format that is rapidly becoming a standard for storing large, portable data sets, such as those generated through high-performance computing. OpenDX, formerly IBM Data Explorer, is a visualization package for examining data of any(More)
We present an approximate analytical method for the evaluation of packet loss probability in synchronous optical packet-switched networks which operate under limited deflection routing with the contention resolution method based on priorities. Packets are lost because they are removed by nodes. They are removed because they experience too many deflections(More)
This paper presents an analytical methodology to obtain steady state throughput of a uniformly and fully loaded regular network. The network operates using deflection routing under the condition that a data packet is allowed to experience a finite number of deflections. Unlike the published analytical methods, the proposed method allows the analysis of a(More)
—We state a new problem of itinerant routing in elastic optical networks, which we define as the establishment and reconfiguration of an itinerant connection. In an itinerant connection, one of the connection end nodes is allowed to change. Itinerant routing could also be considered a form of connection restoration, where a connection has to be restored to(More)
—We evaluate the downstream performance of our novel interoperator fixed-mobile network sharing, in which operators exchange data in their access networks. We propose a performance evaluation algorithm, and report credible performance evaluation results obtained for 204600 randomly-generated passive optical networks. We show that with the proposed sharing,(More)
—We propose an optical interconnection network with the wavelength time slot routing, a novel routing scheme that allows for a simple design of optical interconnection networks. The simulative performance evaluation shows that the proposed scheme demonstrates optimum performance at the maximum uniform exponential network load, and performs well in(More)
Optical packet switching has been researched for about two decades, but it has not been deployed in commercial networks yet. Nonetheless, the research on optical packet switching continues as it promises to perform better than electronic hardware. We report on the established results of optical packet switching, and examine the reasons for its current state.