Seminars at the Faculty of Informatics

The Faculty of Informatics is pleased to announce a seminar given by Prof. Jan Vitek


TITLE: Memory Management for Hard Real-time Systems (or How to fly a plane with Java) 

SPEAKER: Prof. Jan Vitek, Computer Science Department, Purdue University and Academic Visitor at IBM Research, TJ Watson

DATE: Friday, April 11th, 2008

PLACE: USI Università della Svizzera italiana, room SI-006, Informatics building (Via G. Buffi 13)

TIME: 16.00-17.00




The Java programming language has become a viable platform for real-time systems with applications in avionics, shipboard computing, audio processing, industrial control and the financial sector. High performance real-time Java virtual machines (RT JVMs) are now available from multiple vendors.


One of the main challenges in using a high level programming language, such as Java or C#, to program hard-real time system is to deal with heap-allocated data structures. Traditional techniques such as pre-allocation and object pooling are ill-suited to modern software engineering practices. In this talk I describe two approaches that we have experimented with in the context of the Ovm real-time Java virtual machine:

region-based allocation and real-time garbage collection. I will demonstrate that for tasks which can tolerate latencies on the order of 1 millisecond real-time collectors are perfectly adequate, but, in order to obtain sub-milliseconds latencies other approaches are required. The talk will also give an overview of new results in non-blocking concurrent garbage collection.


Jan Vitek is an Associate Professor in the Computer Science Department at Purdue University and an Academic Visitor at IBM Research, TJ Watson. At Purdue he leads the Secure Software Systems Lab and works on virtual machines, software engineering and information security. At IBM, he is working on programming languages for multicores. Prof. Vitek obtained his PhD from the University of Geneva in 1999, and a MSc from the University of Victoria in 1995. He is a recipient of an NSF CAREER Award and a IBM Faculty Award.

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