HECToR Monthly Report, February 2008
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 February 2008 to 08:00 1 March 2008
Number of hours: 696
1: Availability
Scheduled down time: 21 hours 48 minutes
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 7 |
| 2 | 0 |
| 3 | 26 |
| 4 | 2 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-115 | 06/02/2008 | Inactive link between c18-0c0s4s3 and c16-0c0s4s3 | 1:30:00 | Cray |
| Incident-120 | 12/02/2008 | HSN collapse after link inactive failure | 1:18:00 | Cray |
| Incident-125 | 16/02/2008 | System reloaded due to nodes out of memory | 2:53:00 | Cray |
| Incident-126 | 17/02/2008 | Reload required due to Lustre problems | 0:58:00 | Cray |
| Incident-130 | 23/02/2008 | OST nodes fail after Lustre errors | 2:46:00 | Cray |
| Incident-131 | 24/02/2008 | OST/MDS nodes fail after Lustre errors | 1:59:00 | Cray |
| Incident-142 | 29/02/2008 | OST nodes fail after Lustre errors | 3:11:00 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 7 | 105 | 14:35:00 | 97.8% |
| Site | 0 | - | 01:03:00 | 100% |
| External | 0 | - | 00:00:00 | 100% |
| Other | 0 | - | 00:00:00 | 100% |
| Overall | 7 | 105 | 11:03:00 | 97.8% |
- 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 | Available places | Total attending | HECToR Users | HECToR Staff |
| 18 Feb | Introduction to HECToR | 20 | 14 | 4 | 1 |
| 19-20 Feb | Tools and Techniques | 12 | 10 | 5 | 1 |
| 21-22 Feb | Testing and Benchmarking | 12 | 8 | 4 | 1 |
| 27-28 Feb | Scientific Visualisation | 12 | 4 | 1 | 3 |
3: Quality tokens
| Feb 4, 2008 3:05:04 PM | Mr Anthony J Devey | * * * * * |
4: Hours worked
| Group | Days worked | FTEs |
| USL | 71.0 | 4.0 |
| OSG | 69.3 | 3.9 |
5: Performance metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 97.8% |
| Technology throughput | 7000 hours | 8367 hours | 8347 hours |
| Capability job completion rate | 70% | 90% | 97% |
| Technology MTBF | 100 hours | 126.4 hours | 105 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 | 7.9 |
| SP serviceability | 80% | 99% | 99.5% | 100% |
