EGI-InSPIRE:Switzerland-QR6
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Inspire reports menu: | Home • | SA1 weekly Reports • | SA1 Task QR Reports • | NGI QR Reports • | NGI QR User support Reports |
Quarterly Report Number | NGI Name | Partner Name | Author |
---|---|---|---|
QR6 | NGI_CH | SWITCH | Andres Aeschlimann |
1. MEETINGS AND DISSEMINATION
1.1. CONFERENCES/WORKSHOPS ORGANISED
Date | Location | Title | Participants | Outcome (Short report & Indico URL) |
---|---|---|---|---|
05-09.09.2011 | Karlsruhe | Swiss Grid School 2011 (co-organized with GridKa School 2011) | 80 | Organized and held lectures and tutorials on the ARC middleware http://www.swing-grid.ch/event/285525-swiss-grid-school-2011 |
1.2. OTHER CONFERENCES/WORKSHOPS ATTENDED
ETHZ only attended conferences, which are related to the physics exploitation, which actually relies nearly exclusively on the proper operation of the grid.
Date | Location | Title | Participants | Outcome (Short report & Indico URL) |
---|---|---|---|---|
19.09.2011-23.09.2011 | Lyon | EGI 2011 Technical Forum | 1 (ETHZ) + 2 (UZH) + 3 (SWITCH) | http://tf2011.egi.eu/ |
11.10.2011 | SWITCH | NGI_CH InSPIRE project meeting | 4 (ETHZ) + 2 (SwiNG) + 1 (FMI) + 2 (SWITCH) | https://wiki.swing-grid.ch/doku.php?id=inspire:swissinspiremeetings#section11102011 (protected) |
05.10.2011 - 08.10.2011 | Kiev | Nordugrid technical workshop 2011 | 1 (UZH) | http://indico.hep.lu.se//conferenceDisplay.py?confId=1118 |
1.3. PUBLICATIONS
These publications include also some which could be realized thanks to the Grid.
Publication title | Journal / Proceedings title | Journal references Volume number Issue Pages from - to |
Authors 1. 2. 3. Et al? |
---|---|---|---|
Measurement of B-Bbar Angular Correlations at √s 7 TeV with the CMS Experiment. | CMS-CR-2011-169 arXiv:1110.4751 | http://inspirehep.net/record/940807 | Christoph Grab |
Jet Production Rates in Association with W and Z Bosons in pp Collisions at sqrt(s) = 7 TeV. | CMS-EWK-10-012, CERN-PH-EP-2011-125 arXiv:1110.3226 | http://inspirehep.net/record/940012 | Serguei Chatrchyan et al. (2258 authors) |
Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC. | CMS-EWK-11-003, CERN-PH-EP-2011-159 arXiv:1110.2682 | http://inspirehep.net/record/939559 | Serguei Chatrchyan et al. (2254 authors) |
Measurement of energy flow at large pseudorapidities in pp collisions at sqrt(s) = 0.9 and 7 TeV. | CMS-FWD-10-011, CERN-PH-EP-2011-086 arXiv:1110.0211 | http://inspirehep.net/record/930319 | Serguei Chatrchyan et al. (2208 authors) |
Forward Energy Flow, Central Charged-Particle Multiplicities, and Pseudorapidity Gaps in W and Z Boson Events from pp Collisions at 7 TeV | CMS-FWD-10-008, CERN-PH-EP-2011-141 arXiv:1110.0181 | http://inspirehep.net/record/930318 | Serguei Chatrchyan et al. (2239 authors) |
Search for a Vector-like Quark with Charge 2/3 in t + Z Events from pp Collisions at sqrt(s) = 7 TeV. | CMS-EXO-11-005, CERN-PH-EP-2011-139 arXiv:1109.4985 | http://inspirehep.net/record/928282 | Serguei Chatrchyan et al. (2252 authors) |
Search for Supersymmetry at the LHC in Events with Jets and Missing Transverse Energy. | arXiv:1109.2352 | http://inspirehep.net/record/927049 | Serguei Chatrchyan et al. (2255 authors) |
Measurement of the t $\bar{t} Production Cross Section in pp Collisions at 7 TeV in Lepton + Jets Events Using b-quark Jet Identification. | CMS-TOP-10-003, CERN-PH-EP-2011-085 arXiv:1108.3773 | http://inspirehep.net/record/924377 | Serguei Chatrchyan et al. (2211 authors) |
Measurement of the Differential Cross Section for Isolated Prompt Photon Production in pp Collisions at 7 TeV. | CMS-QCD-10-037, CERN-PH-EP-2011-128 arXiv:1108.2044 | http://inspirehep.net/record/922830 | Serguei Chatrchyan et al. (2256 authors) |
Measurement of the Drell-Yan Cross Section in pp Collisions at sqrt(s) = 7 TeV. | CMS-EWK-10-007, CERN-PH-EP-2011-093 arXiv:1108.0566 | http://inspirehep.net/record/921788 | Serguei Chatrchyan et al. (2255 authors) |
2. ACTIVITY REPORT
2.1. Progress Summary
2.1.1. ETHZ
- Tier-2 operated according to the MoU Switzerland-- WLCG.
- Delivered the pledged resources to WLCG;
- Planning of upgrades.
2.1.2. UZH
- Provided ARC EA activities as well as coordination with other ARC EA teams.
- Consolidated the infrastructure for Early Adopter activities with more flexible VMs.
- Reinforced the connections with the other ARC EA teams to better distribute tests.
- Feedback sent to EA manager on shortcomings of current validation procedures.
2.1.3 SWITCH
Coordination
2.2. Main Achievements
2.2.1 ETHZ
Overall for ETHZ (representing CHIPP) :
The main activity was concentrated on
- the routine operation of the Swiss Tier-2 being part of WLCG; delivering the resources as pledged to WLCG.
- Performing necessary upgrades of the Tier-2 for 2011. Planning upgrades for 2012 - 2014.
- Operations and upgrade planning for the Swiss Tier-3s (Geneva, Bern, EPFL, UZH, ETHZ).
- Overall securing of personnell and funding for the Swiss Grid operation.
CSCS:
- Redeployment of one CREAM-CE server in physical hardware to improve overall performance and reliability.
- Configure CREAM servers to use local sandbox (vs. sandbox in shared filesystem) and utilization of ARGUS servers for authentication.
- Updated software versions of CREAM-CE, ARGUS and APEL to subsequent UMD releases.
- Fixed many problems and errors with CREAM software detected by Swiss CMS community. Specifically, regarding the information system of CREAM-CE.
- Managed to integrate ARC-CEs in the production BDII.
- Started using KVM in preproduction with the intention to replace Xen in the near future.
- Added new Nagios monitoring for local systems as well as included Pakiti to check vulnerabilities in software packages.
- Improved integration of monitoring tools to create a pseudo control-center that makes easier to manage/organize CSCS-LCG2.
2.3. Issues and mitigation
Issue Description | Mitigation Description |
---|---|
CSCS: Scratch FS lustre cannot keep up with the load that some jobs put it to. | Working on deploying GPFS with metadata on SSDs. Expected final deployment: QR7. |
CSCS: Increasing number of CREAM bugs that make operations unreliable. | Updated CREAM CEs to latest versions and planning to stay stable for some time. |
CSCS: Affected by some ARGUS and YAIM bugs that disallows the use of ARGUS in HA. | Tickets were solved and new updates will be put in upcoming software releases. |
CSCS: Many hardware problems with some of our WNs (old SUN Blades). | Faulty parts replaced with spares. |
https://xgus.ggus.eu/ngi_ch/?mode=ticket_info&ticket_id=99 | Update CREAM CE to EMI 1 Update 4 |
https://ggus.eu/ws/ticket_info.php?ticket=74824 | waiting since 2011-10-05 11:12 orphaned ticket? |
https://ggus.eu/tech/ticket_show.php?ticket=74787 | waiting for answer from Condor team |
https://ggus.eu/ws/ticket_info.php?ticket=74338 | waiting for answer from torque developers |
https://ggus.eu/tech/ticket_show.php?ticket=73221 | waiting for https://cern.service-now.com/nav_to.do?uri=incident.do?sysparm_query=number=INC072979 |
https://ggus.eu/tech/ticket_show.php?ticket=72640 | waiting for https://savannah.cern.ch/bugs/?84374 |
https://ggus.eu/tech/ticket_show.php?ticket=72260 | waiting |
UZH: As Atlas is now migrating towards ARC1, the monitoring infrastructure needs to be adapted to better test the new services. | Few issues have been already identified. GGUSS tickets will be created accordingly. |
UZH: As the ARC middleware is rarely deployed in production on SL5 platforms, we questioned the usefulness of the entire UMD validation process of ARC being restricted to a single platform | discussion is ongoing within ARC EA teams and the issue has been escalated to EA manager as well as to EGI's Chief Operations Officer. |