How to start the event builder (OBSOLETE at point 8)

Connect to the machine where to run the event building :

  • CPPM : marmuon4 with login cc ( ssh cc@marmuon4.in2p3.fr )
  • CERN : hlte0901 or hlte0902 with login piyvduval ( ssh piyvduval@hlte0901 from a lbgw gateaway machine - see L0MuonHowToUsedMachines)

Preliminary checks :

Check that a dns server is running : ps waux | grep dns

Set the environment with the dedicated script : source $CMT_SW_SCRIPTS/l0muonRxEnv.sh

Launch the event builder

After running the previous script, you should be in : /group/trg/l0muon/sw/event_builder.

From there, type : source ./l0muonRx.sh

PS: many (~11) windows should pop up. MBMMon is perhaps the most useful.

Tips :

How to modify the output file name
Edit the file options/DiskWR.opts

How to specify the source boards address and receiver IP
Edit and modify the file options/EBTMU.opts

How to stop the event builder
pkill Gaudi.exe

or

source ./cleanall.sh

How to know if packets are received by the event builder
Check the proper connections of GBE links of the TELL1 with the following script showMac.py used for the active L1 board monitoring. It is available in the directory /group/online/showMac/.

/group/online/showMac/showMac.py

This script is to discover all the active L1 Read-out Boards, which are connected to the aggregation switches ( sw-agg-01 and sw-agg-02 ) and sending data through the DAQ switch (sw-daq-02), and list their mac-addresses and their names in the order of mac-address. And the traffics are also monitored as well.

For most detail, please see https://twiki.cern.ch/twiki/bin/view/LHCb/ActiveL1BoardMonitoring

Also the program wireshark to spy ETHERNET packets is available on the event builder machines:

sudo wireshark &

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Project_Administrator.png r1 manage 63.8 K 2007-10-09 - 18:34 JeanPierreCachemiche Project Admisnistrator window
Edit | Attach | Watch | Print version | History: r10 < r9 < r8 < r7 < r6 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r10 - 2008-04-24 - JulienCogan
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    LHCb All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback