Browsing by Author "Karaca, Evren"
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Item Open Access Parpatoh : A 2D-parallel hypergraph partitioning tool(2006) Karaca, EvrenHypergraph partitioning is a process that is being used to find solutions for optimization problems in various areas, including parallel volume rendering, parallel information retrieval and VLSI circuit design. While the current partitioning methods are adequate for hypergraphs up to certain size, these methods start to fail once the problem size exceeds this threshold. In this thesis we introduce ParPaToH, a parallel p-way hypergraph partitioning tool that makes use of a 2-D decomposition to reduce the communication overhead and implements a parallel-computing friendly version of the accepted multi-level partitioning paradigm to generate its partitioning. We present new concepts in hypergraph partitioning that lead to a coarse-grain parallel solution. Finally, we discuss the implementation of the tool in detail and present experimental results to demonstrate its effectiveness.Item Open Access SE4SEE: A grid-enabled search engine for South-East Europe(2005) Cambazoğlu, B. Barla; Turk, Ata; Karaca, Evren; Aykanat, Cevdet; Ucar, Bora; Küçükyılmaz, Tayfun; Temizsoylu O.Search Engine for South-East Europe (SE4SEE) is an application project aiming to develop a grid-enabled search engine that specifically targets the countries in the South-East Europe. It is one of the two selected regional applications currently implemented in the SEE-GRID FP6 project. This paper describes the design details of SE4SEE and provides an architectural overview of the application.