HECToR Monthly Report, July 2009
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 July 2009 to 08:00 1 August 2009
Number of hours: 744
Scheduled down time: 50 hours 21 minutes. This includes downtime for Phase 2A upgrade.
The following incidents were recorded:
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 47 SEV-3 Incidents, 47 were attributed to single node failures.
Details of severity level 1 incidents
|Incident-1771||02/07/2009||HSN contention caused full system failure||01:44||Cray|
|Incident-1806||06/07/2009||/etc/nologin set by closedown script||00:15||OSG|
|Incident-1846||09/07/2009||Link Inactive error||01:08||Cray|
|Incident-1996||24/07/2009||Link Inactive error||01:30||Cray|
MTBF and Serviceability
- Note 1: Serviceability%= 100*(WCT-SDT-UDT)/(WCT-SDT)
- Note 2: MTBF (Mean Time Between Failures) is defined as 732/Number of failures.
Details of XT single node failures
|UME bk0/bk4 (Dimms)||27|
|RX message header CRC Error||16|
2: CoursesThis information is supplied by NAG Ltd
|Title of Course||Dates||Available Places||Ordinary Attendees||Paying Attendees||CSE Staff||Total Attending|
|OpenMP and Mixed Mode Programming, Queens University of Belfast||1 - 2 July 2009||24||12||0||0||12|
|NERC Summer School, Beginner Stream, BAS Cambridge||8 - 9 July 2009||17||17||0||0||17|
|NERC Summer School, Advanced Stream, BAS Cambridge||8 - 9 July 2009||16||16||0||0||16|
3: Quality TokensNone set this month.
4: Hours Worked
5: Performance Metrics
|Technology throughput||7000 hours||8367 hours||8124 hours|
|Capability job completion rate||70%||90%||96.3 %|
|Technology MTBF||100 hours||126.4 hours||244 hours|
Note: Technology throughput is calculated: 12*(732-UDT-SDT); 732 - annual average number of hours in a month
Note: MTBF is calculated as 732/number of failures
|Percentage of non-in-depth |
queries resolved within one day
|Number of SP FTEs||7.3||8.0||8.7||9.0|