HECToR Monthly Report, February 2012
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 February 2012 to 08:00 1 March 2012
Number of hours: 696
1: Availability
Scheduled down time: 11 hours 18 minutes. This includes closing for
the Phase 3 launch event on 13 February 2012.
Incidents
The following incidents were recorded:
Severity | Number |
1 | 0 |
2 | 1 |
3 | 17 |
4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 17 SEV-3 Incidents, 17 were attributed to node failure events.
Details of severity level 1 incidents
None this month.MTBF and Serviceability
Attribution | Failures | MTBF | UDT | Serviceability |
Cray | 0 | ∞ | 00:00 | 100.0% |
Site | 0 | ∞ | 00:00 | 100.0% |
External | 0 | ∞ | 00:00 | 100.0% |
Other/Unknown | 0 | ∞ | 00:00 | 100.0% |
Overall | 0 | ∞ | 00:00 | 100.0% |
- 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 single node failures
Error Type | Number |
Kernel panic (Out-of-memory error/Opteron error) | 4 |
MCA bank 4 error | 3 |
Admindown by Node Health Check script(*) | 3 |
HT lockup error | 2 |
MCE threshold exceeded | 2 |
Thermtrip on Opteron processor | 1 |
xtbounce failure during PM. [Node not returned at end of PM](*) | 1 |
Gemini failure | 1 |
(*) No user job lost
2: Courses
This information is supplied by NAG LtdTitle of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
Advanced Computational Methods II (MSc), University of Southampton | Every Friday in February | 30 | 24 | 0 | 0 | 24 |
Introduction to HECToR, NAG Oxford | 6 February 2012 | 12 | 3 | 0 | 0 | 3 |
Debugging, Profiling and Optimising, NAG Oxford | 7 - 9 February 2012 | 6 | 0 | 0 | 0 | 6 |
Parallel Programming with MPI, University of Sheffield | 8 - 10 February 2012 | 30 | 22 | 0 | 0 | 22 |
Introduction to HECToR, NAG Oxford | 20 February 2012 | 12 | 1 | 0 | 0 | 1 |
Debugging, Profiling and Optimising, NAG Oxford | 21 - 23 February 2012 | 12 | 5 | 0 | 0 | 5 |
5: Performance Metrics
Technology Provision
Description | TSL | FSL | Value |
Technology reliability | 85% | 98.5% | 100.0% |
Technology throughput | 7000 hours | 8367 hours | 8648 hours |
Capability job completion rate | 70% | 90% | 100% |
Technology MTBF | 100 hours | 126.4 hours | ∞ |
Note: Technology throughput is calculated: 12*(732-UDT-SDT), where 732 is the annual average number of hours in a month.
Note: MTBF is calculated as 732/number of failures
Service Provision
Description | TSL | FSL | USL | Value |
Percentage of non-in-depth queries resolved within one day | 85% | 97% | 99% | 98.9% |
Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.6 |
SP Serviceability | 80% | 99% | 99.5% | 100% |