Actions
2015-11-30-MEMO-CSw¶
Offline:¶
- Tracker sign flip
- Problem identified.
- fibers were counted in the 'wrong' direction (wrt hardware design) in the reconstruction (code) & MC (description)
- the two stereo-views had their rotations flipped in the geometry description
- the rotation direction in geant goes the opposite way wrt reconstruction
- Implementation & Testing in progress
- Code:
- Fix interpretation of mapping — counting of fibers to be consistent with h/w map
- MC:
- Fix fiber numbering in the geometry description (to be consistent with h/w and reconstruction)
- handle geant-reco rotation difference in the gdml translation
- C. Heidt has implemented
- DR has re-processed a test run with the fixes, C.H is looking at the output
- Fixes to go into production geometry & MAUS after testing
- Code:
- Problem identified.
- Tracker momentum reconstruction
- CHunt investigating: Energy loss handling in Kalman, field non-uniformity, field underestimation in MAUS
- Geometry
- the EMR geometry has been fixed by RB (sensitive detector definitions in the GDML description)
- FD has been working on structural improvements to the EMR reconstruction, will look at geometry next & validate
- the EMR geometry has been fixed by RB (sensitive detector definitions in the GDML description)
Infrastructure¶
- EPICS failover tests (partially) done
- tested the failover of miceeccserv1
- will need to be repeated with both backups once miceecserv nodes get static IPs
- CDB failover tested
- procedure now documented
- triggering the read-only-slave to become a read-write-master takes < 5 minutes.
- cooling channel currents for past runs now in CDB, so one can retrieve currents by run number
- PMH has also started writing cooling channel information to CDB from RC now
- JM & DR to work on better automation and job submission/processing bookkeeping on offrec computer
C&M network reconfiguration¶
- Guideline: communication with critical devices should not go through any intermediate server
- implies static IP addresses & avoiding nameserver resolution (communicate explicitly to a static IP )
- lockout ssh connections into critical machines during running (except for superuser)
- requires
- list of C&M machines -- with the networked devices they talk to (ACTION: PMH, PF)
- configuration changes on C&M machines & networked h/w devices to assign a static IP (PMH, PF)
- avoid nameserver resolution by listing names in local lookup table (/etc/hosts) -- sync has to be handled carefully (PF)
- shared mounts to be referenced by IP, not name (PF)
- code changes to communicate to devices by IP (not name) (PMH)
- define PV to indicate running/testing mode (PMH), and script ssh-lockout based on PV (PF)
- PF documenting detailed procedure (in progress: https://micewww.pp.rl.ac.uk/projects/cm/wiki/Static_IP_implementation)
- Estimate ~40 hours (~20 machines + h/w devices), needs to be done when disruptions to C&M & network are acceptable
Updated by Rajaram, Durga about 8 years ago · 3 revisions