Many Java-Cores

• Start date: 01.01.2010
• End date: 31.12.2013
• Funded by: Universität Augsburg
• Local head of project: Prof. Dr. Theo Ungerer

Abstract

The MANJAC processor cluster is an internal project with the goal to build a viable many-core emulator.
Subjects of the research are feasible many-core architectures and possible hardware and software challenges.

Description

The MANJAC (Many Java Cores) is a cluster of Java processors, which emulates a future many-core processor on a bigger scale. Occupying a space of about 3.5 square metres, 64 FPGA boards with 6 cores each, execute Java code natively. Each of those cores is designed to support four concurrent hardware threads, so that the whole cluster of 384 cores can run 1538 hardware threads concurrently. We are using the Jamuth processor to natively execute Java bytecode. Communication between FPGA boards is done via message-passing while the internal communication uses shared memory.
The MANJAC processor cluster is designed to investigate and solve design and scalability problems of future many-core processors. For this purpose it is beneficial to know the hardware and software architecture in detail and to be able to adapt it in every necessary way.
All research is conducted in cooperation with Sascha Uhrig of the TU Dortmund.

Publications

2011

• MANJAC - Ein Many-Core-Emulator auf Multi-FPGA-Basis
  Christian Bradatsch, Sebastian Schlingmann, Theo Ungerer, Sascha Uhrig
  Mitteilungen - Gesellschaft für Informatik e. V., Parallel-Algorithmen und Rechnerstrukturen, ISSN 0177 - 0454, 2011, pages 48-57

2010

• Entwicklung eines parallelen Benchmarks für verteilte Java-Systeme
  Jan Klossowski
  Bachelorarbeit
  Entwurf und Evaluierung eines Network-on-Chip Routers für einen FPGA-Prototypen
  Christian Bradatsch
  Diplomarbeit

2009

• FPGA-Entwurf eines Java Multicore Rechenknotens
  Michael Bayer
  Bachelorarbeit