HECToR Monthly Report, November 2010
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
This report relates to the Phase 2a service only. Performance statistics for the non-contractual Phase 2b system can be found here.
Dates covered: 08:00 1 November 2010 to 08:00 1 December 2010
Number of hours: 720
1: Availability
Scheduled down time: 5 hours 50 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 1 |
| 2 | 0 |
| 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 single node failure events.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-4896 | 30/11/2010 | HT error caused esfs hangup | 03:59 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 1 | 732 | 03:59 | 99.4% |
| Site | 0 | ∞ | 00:00 | 100% |
| External | 0 | ∞ | 00:00 | 100% |
| Other | 0 | ∞ | 00:00 | 100% |
| Overall | 1 | 732 | 03:59 | 99.4% |
- 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 |
| RX message CRC Error | 1 |
| RX message header CRC Error | 4 |
| RX packet sequence number error | 2 |
| MCA bank 0 error (internal Opteron cache error) | 1 |
| Software error - kernel panic | 1 |
2: Courses
This information is supplied by NAG Ltd| Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
| Debugging, Profiling and Optimising, University of Warwick | 8 - 9 November 2010 | 20 | 11 | 0 | 0 | 11 |
| Parallel Programming with MPI, University of Edinburgh | 8 - 10 November 2010 | 15 | 15 | 0 | 0 | 15 |
| OpenMP, University of Edinburgh | 11 - 12 November 2010 | 15 | 12 | 0 | 0 | 12 |
3: Quality Tokens
| Date | Tokens Awarded | Comment | Consortium |
| 30-Nov-2010 11:45:23 | * * * * | 4 star tokens, no comments from the user | x01 |
| 30-Nov-2010 11:45:23 | • | Filesystem response time is unacceptable!!! | e05 |
4: Hours Worked
| Group | Days worked | FTEs |
| USL | 81.2 | 4.6 |
| OSG | 78.7 | 4.4 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 99.4% |
| Technology throughput | 7000 hours | 8367 hours | 8665 hours |
| Capability job completion rate | 70% | 90% | 92.9% |
| Technology MTBF | 100 hours | 126.4 hours | 732 |
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% | 99.5% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 9.0 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
