WoTUG - The place for concurrent processes

Annual Conference: Communicating Process Architectures

Communicating Process Architectures 2016, the 38th. WoTUG conference on concurrent and parallel systems, takes place from Sunday August 21st. to Wednesday August 24th. 2016 and is hosted by the Niels Bohr Institute, University of Copenhagen. Conference sessions will take place at the Hans Christian Ørsted Institute, which is located here. The evening Fringe sessions will be at the Caféen Bar, which is just a few minutes walk from the Ørsted buildings.

About WoTUG

WoTUG provides a forum for the discussion and promotion of concurrency ideas, tools and products in computer science. It organises specialist workshops and annual conferences that address key concurrency issues at all levels of software and hardware granularity. WoTUG aims to progress the leading state of the art in:

  • theory (programming models, process algebra, semantics, ...);
  • practice (multicore processors and run-times, clusters, clouds, libraries, languages, verification, model checking, ...);
  • education (at school, undergraduate and postgraduate levels, ...);
  • applications (complex systems, modelling, supercomputing, embedded systems, robotics, games, e-commerce, ...);
and to stimulate discussion and ideas on the roles concurrency will play in the future:
  • for the next generation of scalable computer infrastructure (hard and soft) and application, where scaling means the ability to ramp up functionality (stay in control as complexity increases) as well as physical metrics (such as absolute performance and response times);
  • for system integrity (dependability, security, safety, liveness, ...);
  • for making things simple.
Of course, neither of the above sets of bullets are exclusive.

WoTUG publications

A database of papers and presentations from WoTUG conferences is here. The Abstract below has been randomly selected from this database.

A Reconfigurable Host Interconnection Scheme for Occam-Based Field Programmable Gate Arrays

By Roger M. A. Peel

This paper reports on the development of an interconnection scheme for field-programmable gate arrays (FPGAs). These FPGAs may be programmed in the Occam parallel programming language. Now, not only may the inter-process communication channels provided by Occam be used on-chip, but they may also be extended to a host processor using the ubiquitous Universal Serial Bus (USB). Bidirectional channels of BYTEs are carried along this bus to a host processor (running Linux) where they are presented to application code using a device driver that provides similar capabilities to the standard B004 card link driver. A unidirectional end-to-end throughput between Linux processes and FPGA processes, across USB, has been measured as high as 1025 kbytes/sec, although this rate is only achieved in favourable circumstances. Similarly, 410 kbytes/sec may be transferred in both directions simultaneously. Unidirectional transmission rates of more than 600 kbytes/sec, and bidirectional rates of 175-300 kbytes/sec in each direction may be achieved in a wide range of circumstances. The paper presents a range of performance figures, explaining which are limited by the underlying characteristics of the USB bus and which are caused by the current implementation. By implementing a transputer OS-Link in the FPGA, it is possible for a USB- enabled computer to communicate with a network of transputers, providing a convenient - and potentially faster - alternative to previous methods.

Complete record...


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