TY - JOUR AU - Hahn, O. AU - Chudaska, A. AU - Meschut, Gerson ID - 20736 IS - 1-2 JF - Materialprüfung TI - Nichtrostende Stahlbleche kleben – Klebeigen-schaften durch Strahlbeschichten verbessern VL - 38 ER - TY - CONF AU - Hahn, O. AU - Meschut, Gerson ID - 20737 T2 - Tagungsband zur EURADH’ 96 TI - Increasing the thermal conductivity of bonded joints VL - 2 ER - TY - GEN AB - In this report, we develop a cost model for the communication time on parallel computers consisting of processors and a service network, i.e., a network performing services like broadcast, synchronization, and global variables. Because we do not have a parallel computer at our disposal that is equipped with a service network, we emulate the service network on a reconfigurable Transputer network. Our cost model describes the communication time of accesses to global variables and consists of a multi­linear function. The cost model includes the parameters packet size, send hot spot (the number of messages sent out by one processor), and number of processors accessing global variables. We show that these parameters influence the communication time in a high degree and capture important parameters like network contention. We implement a Bitonic Sort, Sample Sort, Matrix Multiplication, and Connected Components algorithm, and we show that our model is able to predict the communication time within a 10% error if indirect service networks are used. The applications show that it is easy for a programer to determine the parameter values for our model and that our new cost model precisely predicts the communication time of parallel algorithms. We explore the interaction of hot spots and asynchrony and show that the influence of hot spots to the communication time is not as high as one would expect from theoretical considerations in a synchronous model. Therefore, we do not apprehend the hot spot in our cost model. Furthermore, we minimize the communication time of accesses to global variables by finding a balance between the number of messages in the network and their size. Our model predicts the optimal values for these parameters which we validate by experiments. A modified implementation of our routing which determines on­line the optimal parameter values for an access to a global variable achieves good speed ups. AU - Fischer, Matthias AU - Rethmann, Jochen AU - Wachsmann, Alf ID - 18352 TI - A Realistic Cost Model for the Communication Time in Parallel Programs on Parallel Computers Using a Service Hardware ER - TY - CHAP AU - Tophinke, Doris ED - Michaelis, Susanne ED - Tophinke, Doris ID - 18428 T2 - Texte – Konstitution, Verarbeitung, Typik TI - Zwei Aspekte der Texttypik: Funktionalität und kulturelle Expressivität – ein historisches Fallbeispiel ER - TY - JOUR AU - Zenker, Dieter AU - Zimmer, Detmar ID - 22318 IS - 4 JF - KEM - Konstruktion Elektronik Maschinenbau TI - Vollwellen-Getriebefamilie in parallel-axialer und Winkel-Bauweise. Schnittstellen-Definition gefordert ER - TY - JOUR AU - Zimmer, Detmar ID - 22319 IS - 1 JF - antriebstechnik - Zeitschrift für Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen SN - 2747-7991 TI - Neue Winkelgetriebebaureihen mit hoher Funktionalität VL - 35 ER - TY - JOUR AU - Trächtler, Ansgar AU - Mesch, Franz ID - 23358 JF - VDI-Bericht 1255 Sensoren und Meßsysteme TI - Ein induktiver Durchflußmesser mit umschaltbarem Magnetfeld zur Bestimmung von Strömungsprofilen und rheologischen Kenngrößen ER - TY - JOUR AU - Trächtler, Ansgar ID - 23359 JF - IEE Digest No. 96/092: Advances in Sensors for Fluid Flow Measurement TI - An inductive flowmeter for measuring rheological parameters and reconstructing the flow profile ER - TY - JOUR AU - Horner, Boris AU - Mesch, Franz AU - Trächtler, Ansgar ID - 23360 JF - Measurement Science and Technology TI - A Multi-Sensor Induction Flow Meter Reducing Errors due to Non-axisymmetric Flow Profiles VL - 7 ER - TY - THES AU - Scheideler, Christian ID - 2181 TI - Universal routing strategies ER -