HECToR Monthly Report, January 2010
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 January 2010 to 08:00 1 February 2010
Number of hours: 744
1: Availability
Scheduled down time: 11 hours 50 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 3 |
| 2 | 2 |
| 3 | 13 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 13 SEV-3 Incidents, 13 were attributed to single node failures.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-2777 | 12/01/2010 | Module fault: c19-2c1s0 | 02:16 | Cray |
| Incident-2787 | 20/01/2010 | Maintenance session overrun | 03:50 | Cray |
| Incident-2827 | 25/01/2010 | High Speed Network failure | 05:24 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 3 | 244 | 11:30:00 | 98.4% |
| Site | 0 | ∞ | 00:00:00 | 100% |
| External | 0 | ∞ | 00:00:00 | 100% |
| Other | 0 | ∞ | 00:00:00 | 100% |
| Overall | 3 | 244 | 11:30:00 | 98.4% |
- 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 |
| UME bk4 (Dimms) | 2 |
| UME bk 0-4 (Internal Opteron) | 3 |
| RX message header CRC Error | 5 |
| RX message CRC Error | 1 |
| RX packet sequence number 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, Imperial | 4 - 6 January 2010 | 30 | 17 | 0 | 0 | 17 |
| OpenMP, Imperial | 7 - 8 January 2010 | 30 | 11 | 0 | 0 | 11 |
| Best Practice in HPC Software Development | 11 - 15 January 2010 | 14 | 6 | 0 | 0 | 6 |
| Parallel Programming with MPI, University of Bath | 26 - 28 January 2010 | 30 | 11 | 1 | 0 | 12 |
3: Quality Tokens
None set this month.4: Hours Worked
| Group | Days worked | FTEs |
| USL | 65.4 | 3.7 |
| OSG | 78.2 | 4.4 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 98.4% |
| Technology throughput | 7000 hours | 8367 hours | 8504 hours |
| Capability job completion rate | 70% | 90% | 96.9% |
| Technology MTBF | 100 hours | 126.4 hours | 244 |
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 | 8.1 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
