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)
The Data Acquisition (DAQ) of the CMS Experiment [1] is composed by O(10000) network objects spread in O(1000) nodes, most of them based on commodity PCs, connected to a very efficient Local Area Network. The DAQ complex (both hardware and software) must be controlled in order to synchronize all the objects to perform in the proper sequence the needed(More)
Powerful mainstream computing equipment and the advent of affordable multi-Gigabit communication technology permit us to address data acquisition problems with clusters of inexpensive computers. Such networks typically incorporate heterogeneous platforms, real-time partitions and custom devices. We strive therefore for a software infrastructure that(More)
Powerful mainstream computing equipment and the advent of affordable multi-Gigabit communication technology allow us to tackle data acquisition problems with clusters of inexpensive computers. Such networks typically incorporate heterogeneous platforms, real-time partitions and custom devices. Therefore, one must strive for a software infrastructure that(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)
The data acquisition system for the CMS experiment at the Large Hadron Collider (LHC) will require a large and high performance event building network. Several switch technologies are currently being evaluated in order to compare different architectures for the event builder. One candidate is Myrinet. This paper describes the demonstrator which has been(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)