INFDok - Dokumentenvolltextserver des Fachbereichs Informatik

Kurzfassung auf Englisch:

High performance computers are able to process huge datasets in a short period of time by allowing work to be done on many computer nodes concurrently. This workload often poses several challenges to the underlying storage devices. When possibly hundreds of clients from multiple nodes try to acces the same files, those storage devices become bottlenecks and are therefore a threat to performance. In order to make I/O as efficient as possible, it is important to make the best use out of the given resources in a system. The I/O performance that can be achieved in a system results from a cooperation of several factors: the underlying file system, the interface that connects application and file system, and the implementation. Based on how well all of these factors work together, the best I/O performance can be achieved. In this thesis, an overview will be given of how different file systems work, what access semantics and I/O interfaces there are and how a cooperation of these, in addition to the use of ideal I/O optimization techniques, can result in best possible performance.