HECToR Monthly Report, November 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 November 2011 to 08:00 1 December 2011
Number of hours: 720
1: Availability
Scheduled down time: 91 hours 11 minutes. This includes extended maintenance
required for the Phase 3 upgrade.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 3 |
| 2 | 0 |
| 3 | 2 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 2 SEV-3 Incidents, 2 were attributed to node failure events.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-6929 | 14/11/2011 | esFS problem | 34:49 | Cray |
| Incident-6931 | 18/11/2011 | Loss of cooling water | 06:57 | Site |
| Incident-6931 | 28/11/2011 | Plant cooling failure | 07:14 | Site |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 1 | 732 | 34:49 | 94.5% |
| Site | 2 | 366 | 14:11 | 97.7% |
| External | 0 | ∞ | 00:00 | 100.0% |
| Other/Unknown | 0 | ∞ | 00:00 | 100.0% |
| Overall | 3 | 244 | 49:00 | 92.2% |
- 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 |
| MCA bank 4 error | 2 |
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, King's College London | 7 - 9 November 2011 | 45 | 21 | 0 | 0 | 21 |
| OpenMP, King's College London | 10 - 11 November 2011 | 45 | 14 | 0 | 5 | 14 |
| An Introduction to CUDA Programming, NAG Manchester | 21 - 22 November 2011 | 25 | 13 | 2 | 0 | 15 |
| An Introduction to OpenCL Programming, NAG Manchester | 24 - 25 November 2011 | 25 | 12 | 0 | 0 | 12 |
3: Quality Tokens
None set this month.4: Hours Worked
| Group | Days worked | FTEs |
| USL | 78.9 | 4.4 |
| OSG | 73.0 | 4.1 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 94.5% |
| Technology throughput | 7000 hours | 8367 hours | 7101 hours |
| Capability job completion rate | 70% | 90% | 100% |
| Technology MTBF | 100 hours | 126.4 hours | 732 |
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% | 98.2% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.5 |
| SP Serviceability | 80% | 99% | 99.5% | 97.7% |
