HECToR Monthly Report, August 2011
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 August 2011 to 08:00 1 September 2011
Number of hours: 744
1: Availability
Scheduled down time: 10 hours 28 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 9 SEV-3 Incidents, 9 were attributed to node failure events.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-6741 | 31/08/2011 | Internal networking problems | 03:04 | Other/Unknown |
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 | 1 | 732 | 03:04 | 99.6% |
| Overall | 1 | 732 | 03:04 | 99.6% |
- 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 |
| Software error (bugs #775526, #774927) | 2 |
| Software problem (related to a user application) | 1 |
| HT lockup | 2 |
| MCA bank 1/4 error | 4 |
2: Courses
No training in August 2011.3: Quality Tokens
| Date | Tokens Awarded | Comment | Consortium |
| 10-Aug-2011 | * | HECToR very sluggish in last 24 hours. | n01 |
| 10-Aug-2011 | * * * * * | Performance back to normal. | n01 |
| 10-Aug-2011 | * * * * | Great service! Could perhaps do with reviewing the current 12 hour run limit though. | e05 |
4: Hours Worked
| Group | Days worked | FTEs |
| USL | 84.9 | 4.8 |
| OSG | 66.3 | 3.7 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 100% |
| Technology throughput | 7000 hours | 8367 hours | 8621 hours |
| Capability job completion rate | 70% | 90% | 98.9% |
| 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% | 98.5% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.5 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
