Reparallelization and Migration of OpenMP Applications in Grid Environments Reparallelisierung und Migration von OpenMP-Applikationen in Grid-Umgebungen

si enim placet opus meum, gaudebo. si autem nulli placet: memet ipsum tamen iuvat quod feci. Preface Every accomplishment starts with the decision to try. (Anonymous) An author of a doctoral thesis is required to research and prepare it without the help of others. And this is what I did. However, there are various people that directly or indirectly supported me while working on my masterpiece. They all deserve my special thanks. First of all, I would like to thank Professor Dr. Michael Philippsen for the opportunity to work on his staff on many interesting topics during these past few years. He always believed in my skills and supported my work by providing many useful comments on my research papers and my thesis. However, I will take the time to say that I will never join him for a bicycle tour ever again! Professor Dr. Rüde devoted his time to review my work and report on it. Professor Dr. Christian Stegmann and Professor Dr. Marc Stamminger completed the committee for my final examination. All mem-bers of the committee created a pleasant atmosphere for the examination and asked challenging questions. Many thanks to my students Matthias Bezold, Benjamin Bieber, Georg Dotzler, Stephan Gabriel, and Christian Iwainsky. They contributed their passion, a lot of debugging, and countless lines of code to my work. I apol-ogize for all the parties you missed, because you spent the night in the computer rooms keeping your hands busy on the keyboard.