Difference between revisions of "OWG Meeting 31-Mar-2010"
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'''DAQ''' | '''DAQ''' | ||
− | * Bryan reported that they now get 80 MB/s | + | * Bryan reported that they now get 80 MB/s network data throughtput. |
+ | * Across the VME backplane they get 200 MB/s from the FADC using two-edge source-synchronous transfers. |
Latest revision as of 12:29, 2 April 2010
Contents
Agenda
- Announcements
- CNU student
- Review of minutes from 17-Mar-2010 meeting
- Emerson visit - Dave A, Elliott
- cMsg and SSH tunnels - Carl T, David L, Elliott
- JANA/CLARA - Dave L
- DANAEVIO and EVIO improvements - Elliott
- Trigger test stand - Alex S
- Coil test update - Elliott, Yi
- Other electronics and trigger status reports - Fernando, Chris, Ben, Ed, Alex, Dave, William, Bryan
Time/Location
1:30 PM Wed 31-Mar-2010 CC F326
Announcements
Next Meeting
Tentative: 1:30 PM Wed 14-Apr-2010
New Action Items from this Meeting
Minutes
Attendees: Elliott W, Simon T, Beni Z, Dave A, Carl T, William G, Dave L, Bryan M, Yi Q, Alex S.
Emerson Technical Sales personnel visit
- Emerson purchased the division of Motorolla that supplied VME single board processors.
- They continue to design new PPC boards and have just introduced an Intel-based board (Core i7).
- All boards run Linux and VxWorks. The Intel-based boards can run Windows (sorry, Beni...).
- Dave Abbott wants to move everyone to Intel-based boards, although VxWorks will be around for a while.
- Dave will purchase Emerson, GE-Fanuc and other boards, test them, and make recommendations to the halls.
- Full order from JLab for 12 GeV will be large, perhaps as many as 150 boards (maybe more!).
- Order will involve staged delivery and payment, back-end loaded as much as possible.
- Hall D needs around 70 boards, maybe more for spares and test setups.
- Hall D owns two GE-Fanuc boards; one is at IU and Dave has the other (for software development).
- Embedded processors use less power, but are less powerful.
- Emerson expects seven year processor family lifetime from Intel.
- New boards have lots of on-board memory, can boot from local memory instead of network if desired.
cMsg Tunnels
- Carl reported that ssh tunnels now work with cMsg.
- He had to modify the internal protocol to accommodate tunnels, so latest version is NOT backwards compatible.
- Dave L will test with RootSpy.
JANA/CLARA
- JANA is the Hall D reconstruction/analysis framework (author Dave Lawrence).
- CLARA is the Hall B service-oriented architecture framework (author Vardan Gyurjyan).
- Hall B is considering using JANA, and Hall D is considering using CLARA.
- Possible CLARA applications for Hall D are in the online monitoring farm and to distribute calibration constants, the B field, etc.
- Dave and Elliott will investigate how well CLARA can work with JANA.
DANAEVIO
- Elliott is almost done with serializing DANA objects into an EVIO file (everything is checked in).
- Currently 19 DANA objects are converted, including object id's and associated objects.
- Elliott will add additional DANA objects as needed (not difficult).
- Default EVIO tag/num dictionary provided, user can override if desired.
- Last thing to do on DANA->EVIO is addition of bank of strings, currently not supported in EVIO. Elliott will add this to EVIO and finish DANAEVIO in the next week or so.
- Next big step is to read EVIO file and fill DANA objects. Dave L will work on this with help from Elliott.
Trigger Test Stand
- Alex reported on the latest progress in the trigger test stand.
- Hai is almost done programming the FPGA to allow loading of test pulse height data to test trigger algorithms ("flash replay mode").
- Dave A will provide libraries to allow access to the new FPGA features.
- One constraint is that all 16 channels use the same fake data.
Coil Test
- Controls racks constructed, wiring has begun.
- We will get technical help from Accelerator groups now that the accelerator is running.
- Coil 2 is being opened up.
- Coil 1 is being closed.
- IUCF wants 6 months to complete coil 3 LN2 shield replacement.
- When coil 1 can be moved we will begin construction of the test apparatus.
- EWEB module appears to be working, Elliott created some test web pages that display real PLC data.
- Yi is just getting started with the HMI software. He hopes to borrow screens from Hall C.
- Preparations have begun for OSP and COO reviews. Authors and subject matter experts have been (tentatively) identified.
DAQ
- Bryan reported that they now get 80 MB/s network data throughtput.
- Across the VME backplane they get 200 MB/s from the FADC using two-edge source-synchronous transfers.