Johannes Gutleber

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Mainstream computing equipment and the advent of affordable multi-Gigabit communication technology permit us to address data acquisition and processing problems with clusters of COTS machinery. Such networks typically contain heterogeneous platforms, real-time partitions and even custom devices. Vital overall system requirements are high efficiency and(More)
Mainstream computing equipment and the advent of affordable multi-Gigabit communication technology permit us to address grand-challenge data acquisition and processing problems with clusters of inexpensive computers. Such networks typically incorporate heterogeneous equipment, real-time partitions and even custom devices. Vital overall system requirements(More)
This paper presents an approach for managing applications in a computing cluster. The problem is that several requirements such as flexibility, scalability and inclusion of diverse software have to be met at once. We tackle this by avoiding any hardcoded policy in the framework. Controlled aoolications are encapsulated by a narrow interface. Maintenance(More)
The Run Control and Monitor System (RCMS) of the CMS experiment is the set of hardware and software components responsible for controlling and monitoring the experiment during data-taking. It provides users with a " virtual counting room " , enabling them to operate the experiment and to monitor detector status and data quality from any point in the world.(More)
This paper presents the main ideas behind our soft real-time database system prototype called Data Point Processor (DPP). The main dim in designing such systems is to minimize the application programs part of database management and therefore to avoid heavy data transfers between the database server and the application client due to polling. Our design is(More)
—Scalable, distributed reactive systems require a scalable control infrastructure. Being able to model such an infrastructure is a prerequisite for putting it into place. In current systems, finite state machine based approaches are prevailing. They are, however, limited by their nature and hamper further improvements. Extensions like statecharts have(More)
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