Projekt B05 befasst sich mit der effizienten Verarbeitung von Hardware- und Softwaresensordaten und dient somit als zentrales Repositorium für die einzelnen Projekte der HAEC Software-Gruppe. Um diese Aufgabe energieeffizient umzusetzen wurden bereits in Phase I verschiedene Instrumente zur Erreichung von Software-Adaptivität untersucht, als auch Betrachtungen zur Skalierbarkeit von speicherresidenten Datenbanksystemen auf NUMA-Architekturen (non-uniform memory access) durchgeführt. In Phase II sollen diese Instrumente erweitert werden. Ein besonderer Fokus liegt dabei auf dem zu entwickelnden adaptiven und programmierbaren Daten-Management-System, als zentraler Anwendungsfall für die HAEC Energy-control Loop.

Rolle innerhalb des SFB 912

© SFB 912

• A03: Together with A03 we developed database-specific instruction set architectures that allow the energy-efficient execution of database operators.
• A04: In cooperation with A04 we instrumented in-memory database operators as well as entire database systems to get a deeper insight into the behavior of such operators or entire queries, respectively, in terms of energy consumption and performance penalties. Additionally, we investigated the effect of NUMA architectures on database operations.
• B01: With B01 we integrated our sensor data repository as data source for their resource and placement optimization system. Moreover, we looked at how to optimize the in-memory database MonetDB for energy-efficiency.
• B02: Together with B02 we identified sensor information and corresponding data preprocessing needs that are relevant for a proper situation recognition. Moreover, we extended the query processing capabilities as well as the topology schema of our in-memory data repository to fit these needs. Currently, we work on efficient reasoning that is based on temporal graphs.
• B04: In cooperation with subproject B04, we optimized the sensor data acquisition from the operating system and added additional sensors that are required for further processing inside the HAEC energy-control loop.
• B08: Together with B08 we started to integrate graph data structures as a native database object besides traditional tables and work on interfaces that allow efficient operations on such graphs.

Mitarbeiter

Projektleiter

• Prof. Dr.-Ing. Wolfgang Lehner

Postdocs

• Dr.-Ing. Thomas Kissinger

PhD Students

• Dipl.-Medien-Inf. Annett Ungethüm

ehemalige Mitarbeiter

• Dr.-Ing. Maik Thiele
• Dr.-Ing. Dirk Habich