HECToR Monthly Report, June 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 June 2011 to 08:00 1 July 2011
Number of hours: 720
1: Availability
Scheduled down time: 16 hours 46 minutes.
This includes a scheduled site powerdown for electrical testing (12 hours scheduled,
10 hours 47 minutes actual)
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 1 |
| 2 | 0 |
| 3 | 14 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 14 SEV-3 Incidents, 14 were attributed to node failure events.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-6326 | 16/06/2011 | Computer Room 1 safety system tripped | 02:05 | Site |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 0 | ∞ | 00:00 | 100.0% |
| Site | 1 | 732 | 02:05 | 99.7% |
| External | 0 | ∞ | 00:00 | 100.0 % |
| Other | 0 | ∞ | 00:00 | 100.0% |
| Overall | 1 | ∞ | 02:05 | 99.7% |
- 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 (bug #771936) | 5 |
| HT lockup | 1 |
| MCA bank 1/ bank 4 error | 4 |
| Admindown due to failed Node health check | 3 |
| Module voltage fault | 1 |
2: Courses
This information is supplied by NAG Ltd| Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
| Parallel Programming with MPI, University College London | 14-16 June 2011 | 12 | 9 | 0 | 0 | 9 |
3: Quality Tokens
| Date | Tokens Awarded | Comment | Consortium |
| 07/06/2011 | * * * * | Four positive tokens. No comment from the user | e05 |
| 22/06/2011 | * * * * * | Five positive tokens. No comment from the user | n01/n02 |
4: Hours Worked
| Group | Days worked | FTEs |
| USL | 103 | 5.8 |
| OSG | 74.5 | 4.2 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 100% |
| Technology throughput | 7000 hours | 8367 hours | 8557 hours |
| Capability job completion rate | 70% | 90% | 100.0% |
| 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% | 97.2% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 10.0 |
| SP Serviceability | 80% | 99% | 99.5% | 99.7% |
