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09/11/2006, 10:30 AM - 11:30 AM
Speaker:
Pascal Kleijer, NEC.
The authors have developed a full featured solution for distributed and
parallel real-time visualization in nano-science. A 3-layer based
architecture (client, middleware, and server) where each layer can run
on separate resources is proposed. The solution is tailored especially
for molecular science and the proposed visualization service is specific
to this area. The client is the end-user graphical interface used to
control and steer a remote visualization and simulation server. The
server is a parallel distributed application using grid technology as
interconnect between nodes. Finally, the middleware is proposed in two
flavors: a Globus service and a Tomcat service. Both middleware
interfaces the same client and server, but only one at time middleware
can be used during a session. The system is designed to provide a
ubiquitous solution.
The talk has four specific sections: The first section will briefly
introduce the global 3-layer architecture and the differences between
both approaches (Grid and Web services). The second and most important
section will address performances issues when using a solution over
another. It will focus on benchmarking results, latency and transfer
times of the middleware only, between different Globus versions (GT3 and
GT4) and Tomcat versions (TC4, TC5 and TC5.5). An analysis of these
results will hopefully spawn some debate. The third and second important
section will discuss accessibility and usability issues encountered
during the development. Finally a live demonstration is planned with the
3-layered system using both middleware.
The authors proposes a quantitative and qualitative measure when
designing service oriented applications and do not intent to promote one
solution over another. This talk is designed to show the current state
of the technology as well as the strength and weaknesses of both
approaches. Its focus is primarily on the middleware part, the
visualization theme is to support the case with a concrete example. It
shows, we hope, what is to be expected and not what is promised.
Presentation:
The presentation is expected to be 60 minutes long (preferred), 45
minutes if compression is needed (acceptable), including Q&A and
demonstration. We assume that LAN connection (or stable wireless 11g) is
available during the conference for the demonstration.
Notes:
A simple early GT3 prototype similar to this 3-Layred system was used as
base for a presentation given on March 14, 2005, in Seoul, Korea:
"Visualization with WSRF - A Concrete Example‰. For more details:
http://www.cs.vu.nl/ggf/apps-rg/meetings/ggf13.html
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