HECToR Monthly Report, May 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 May 2009 to 08:00 1 June 2009
Number of hours: 744
Scheduled down time: 15.4 hours.
The following incidents were recorded:
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 23 SEV-3 Incidents, 23 were attributed to single node failures.
Details of severity level 1 incidents
|Incident-1406||03/05/2009||Failure of IO riser to OST15||08:16||Cray|
|Incident-1506||20/05/2009||Maintenance session over-run||00:23||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
|RX message header CRC Error||9|
|MCA bk0/bk2 error (Internal Opteron)||3|
|UME bk0/bk4 (Dimms)||3|
|Coldstart error (node failing to restart after reboot)||4|
Note: During "coldstart" errors, no user jobs were affected.
2: CoursesThis information is supplied by NAG Ltd
|Title of Course||Dates||Available places||Ordinary attendees||Paying attendees||CSE Staff||Total attending|
|Tools and Techniques for Optimising Parallel Codes, NAG Manchester||13 - 15 May 2009||8||4||0||1||5|
|Introduction to High Performance Computing, University of Warwick||18 - 19 May 2009||25||14||0||0||14|
3: Quality tokensNone set this month.
4: Hours worked
5: Performance metrics
|Technology throughput||7000 hours||8367 hours||8495 hours|
|Capability job completion rate||70%||90%||100%|
|Technology MTBF||100 hours||126.4 hours||366 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||8.9|