HECToR Monthly Report, November 2007
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 November 2007 to 08:00 1 December 2007
Number of hours: 720
1: Availability
Scheduled down time: 11 hours 45 minutes
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 6 |
| 2 | 0 |
| 3 | 15 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-52 | 11/11/2007 | OST nodes fail on partial HSN collapse | 3:22:00 | Cray |
| Incident-53 | 12/11/2007 | UoE DNS server failure - no external access | 0:42:00 | Site |
| Incident-55 | 14/11/2007 | System lockup after partial HSN failure | 1:58:50 | Cray |
| Incident-57 | 15/11/2007 | Link failures take HSN down | 5:37:00 | Cray |
| Incident-60 | 21/11/2007 | Service down | 11:09:00 | Cray |
| Incident-62 | 23/11/2007 | Blower failure - service down | 1:44:00 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 5 | 146 | 23:50:50 | 96.6% |
| Site | 1 | 732 | 0:42:00 | 99.9% |
| External | 0 | - | 00:00:00 | 100% |
| Other | 0 | - | 00:00:00 | 100% |
| Overall | 6 | 122 | 24:32:50 | 96.5% |
- Note 1: Serviceability%= 100*(WCT-SDT-UDT)/(WCT-SDT)
- Note 2: MTBF (Mean Time Between Failures) is defined as 732/Number of failures.
2: Courses
This information is supplied by NAG Ltd
| Title of Course | Dates | Length (Days) | Available places | HECToR User Days | HECToR Staff Days |
| Techniques for Achieving Scalability | 1/11/07 - 2/11/07 | 2 | 12 | 3 | 0 |
| Testing and Benchmarking | 6/11/07 - 7/11/07 | 2 | 12 | 4 | 0 |
| Tools and Techniques for Optimising Codes | 8/11/07 - 9/11/07 | 2 | 12 | 5 | 1 |
3: Quality tokens
None set this month.4: Hours worked
| Group | Days worked | FTEs |
| USL | 96.5 | 5.4 |
| OSG | 33.0 | 3.5 |
5: Performance metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 96.6% |
| Technology throughput | 7000 hours | 8367 hours | 8348 hours |
| Capability job completion rate | 70% | 90% | 97% |
| Technology MTBF | 100 hours | 126.4 hours | 146 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
Service Provision
| Description | TSL | FSL | USL | Value |
| Percentage of non-in-depth queries resolved within one day | 85% | 97% | 99% | 100% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.9 |
| SP serviceability | 80% | 99% | 99.5% | 99.9% |
