VEGAS Team Meeting
Dial in Number: 877-937-8961
Passcode: 9445091#
Attendees: Mark, Richard, Ray, Randy, Adam, John, Amanda, Sam, Mark, Paul, Anish, Marty, Jason
Agenda:
Whole group:
- Status of BOFs for Modes 2 and 3 (H16k)
- "top hat" problem
GB only
- Review of "known problems" from: https://safe.nrao.edu/wiki/bin/view/CICADA/VegasStatusUpdate
- Agree to put off Mode 10-19 tests until Joe returns
- Status of commissioning memo
- DIBAS upgrade plans / assistance
- Plans for test time
Meeting notes:
Whole group:
- Status of BOFs for Modes 2 and 3 (H16k)
- Hong is performing a fresh compile of the BOF along with the FFT instead of use pre-compliled FFT
- "top hat" problem
- On occasion there are spectra with the middle section of spectrum flat-topped
- Seems to be confined to the LBW-modes
- Middle 1024 channels filled and others are not so normalized thus the filled channels get clipped
- Seen some correlation between manger restarts and clearing the problems
- Moving to another mode which would reloads BOF might show some information
- Ability to selectively restart parts of the manager (a change) would help narrow down the cause.
- move to GB-Only going forward
GB only
- Review of "known problems" from: https://safe.nrao.edu/wiki/bin/view/CICADA/VegasStatusUpdate
- High Tsys in first integration
- GPU modes are the ones with this problem (Jay reported #23)
- Seems to be problems with exposure time calculation in HPC for first integration
- Joe needs to look at code
- Agree to put off Mode 10-19 tests until Joe returns
- Status of commissioning memo
- Adam Sam & Richard are looking through test data via IDL and while there have been no obvious issues, need to solve remaining IDL in intricacies.
- Need to rerun ripple tests - Amanda to data process?
- Engineering tests need Anish, maybe in GB.
- Deadline for delivery mod-August
- DIBAS upgrade plans / assistance
- John is working with SHAO on getting the environment settled. John can help with FPGA, but need software assistance (Ray & Joe)
- Will send them SDD direct contact information for Ray & Paul depending on area of system that needs support, Richard to send information.
- Paul & Joe will not be available until next week and mid August respectively.
- need to send them DIBAS models
- Plans for test time
- Unscheduled request(s): Demo/training [Richard/Alyson]
- Tuesday
- Wednesday
- Thursday
- Monday (8/4)
Other
- Please make sure to properly code your timesheets for the current time period and going forward.
- Software engineers should be using a GBT ops software CM&E account - Account 893252
- Electronic engineers should be using a GBT ops electronics CM&E account - Account 432510
- Commissioning activities should be getting charged to hardware support and testing - Account 432510
- Scientists assisting with shared-risk commissioning should be charging an observer support account
- 432540 for the most part. Accounts 142020 (GB-based staff) and 142010 (CV-based staff) for when you are helping with overarching observing support (not problem solving, VEGAS specific)
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MartyBloss - 2014-07-28