Gabor Szeder

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This paper presents the integration of two collective I/O techniques into the Clusterfile parallel file system: disk-directed I/O and two-phase I/O. We show that global cooperative cache management improves the collective I/O performance. The solution focuses on integrating disk parallelism with other types of parallelism: memory (by buffering and caching(More)
Unit testing focuses on testing the smallest units that comprise a software system and allows developers to detect bugs early in the development process. However, unit testing is unsuitable for detecting concurrency bugs in multi-threaded programs. Most concurrency bug detection tools work only with full programs. Hence, they can only be used at a later(More)
This paper presents the design and implementation of the MPI-IO interface for the Clusterfile parallel file system. The approach offers the opportunity of achieving a high corela-tion between the file access patterns of parallel applications and the physical file distribution. First, any physical file distribution can be expressed by means of MPI data(More)
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