Transcript Emma report

Last Two Weeks
• Parallel Environment
– SUR BLUEGENE
• Account set up
• DVC can’t cross-compile since Bluegene computing node
doesn’t support dynamic linking while currently DVC adopt a
dynamic plugin loading method
– Department Opteron Cluster
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Group project space granted
Get 64-bit PATH Solver for DVC
Dakota successfully configured and compiled
Parallel running of Dakota tested
Last Two Weeks
• Calibration using Dakota
– Update simulation code to calculate calibration
error on-the-fly
– Set up Dakota pattern search optimization case (a
Local Optimization Method) to do the calibration
– A few minutes to get a local optimal set of
parameters for a single video
– A group of video : see the next page
Last Two Weeks
• Calibration using Dakota for a group of videos
– Wrote a dvc Parallel Wrapper to parallel run dvc
on different experiment data
Dvc Wrappers
Processor 0
Dispatch
Master
Sum up Errors
Processor 1
Processor 2
Processor 3
Processor 4
DVC
DVC
DVC
DVC
video1
video2
video3
video4
continued
– Took about one and a half hour to get a result for
four videos, hopefully this time won’t increase too
much if more videos are added
– My first result matches the data about the same
well as previous result from Matlab, though
different parameter value
Next
• Tune up the parameters of the local
optimization method and try more initial
values
• Try Global optimization method in Dakota and
probably mix both : Global optimize as a start
and use the result as initial of local
• Continue the work of parameter sensitivity
study