Per 1Q09 QSR:
As shown by our demonstration at GEC4, we have made significant progress toward completing Xen sensor
virtualization and non-slivered control of radar sensor data. GEC4 showed a preview of this virtualization capability
for our DavisPro? weather station, and we have a working version of the capability for our PTZ camera in
the lab. We are continuing these efforts in the third quarter. Code is being updated to the ViSE svn repository at
http://vise.cs.umass.edu/svn.
Per 7/31/09 report:
We have completed an initial research-grade implementation of sensor virtualization in Xen and released a
technical report that applies the approach to Pan-Tilt-Zoom video cameras. The technical report can be found on
the web at http://www.cs.umass.edu/publication/details.php?id=1575 and is also attached
to this milestone report. As detailed in our quarterly status report we have faced challenges in applying the same
techniques to the Raymarine radars in the ViSE testbed because their drivers do not operate by default inside of
Xen’s domain-0 management domain. The problem affects other high-bandwidth I/O devices that use Xen, and
is being actively worked on in the Xen community. As these problems are worked out, we have transitioned to
using vservers as ViSE’s preferred virtualization technology, and developed vserver handlers for Orca. We are also
porting VSense to work with vservers as well as with Xen; its modular design makes this port straightforward. Our
demonstration at GEC5 in Seattle showed non-slivered VM access to radar control and data using vservers; once
we complete our port of VSense we will be able to support slivered access. A more detailed description of these
Xen, vservers, and sensors in ViSE is available in the quarter 2 quarterly report for ViSE.
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