HECToR Monthly Report, March 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 March 2008 to 08:00 1 April 2008
Number of hours: 744
1: Availability
Scheduled down time: 11 hours 20 minutes
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 5 |
| 2 | 0 |
| 3 | 20 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-143 | 01/03/2008 | Power problem on module takes out HSN | 02:15 | Cray |
| Incident-150 | 10/03/2008 | OST nodes fail after "portals" problem | 02:38 | Cray |
| Incident-155 | 13/03/2008 | Boot Node Drop | 0:12 | Cray |
| Incident-168 | 26/03/2008 | System down after OST 4node failure | 03:54 | Cray |
| Incident-171 | 30/03/2008 | Failure of external network | 25:45 | External |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 4 | 183 | 08:59:00 | 98.8% |
| Site | 0 | ~ | 00:00:00 | 100% |
| External | 1 | 732 | 25:45:00 | 96.5% |
| Other | 0 | ~ | 00:00:00 | 100% |
| Overall | 5 | 146 | 34:44:00 | 95.3% |
- 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 |
| 3 March 2008 | Introduction to HECToR | 20 | 3 | 2 | 0 |
| 4 - 5 March 2008 | Pitfalls of Numerical Engineering | 12 | 0 | 0 | 0 |
| 6 - 7 March | Techniques for Achieving Scalability | 12 | 5 | 1 | 3 |
3: Quality tokens
| Mar 25, 2008 4:36:14 PM | Dr Lee Margetts | * * * * * | I had the pleasure of attending a workshop at the University of Durham on multiscale modelling. Guy Robinson was in attendance for the workshop. I am very grateful for Guy's professionalism and patience in answering many questions about the HECToR service |
| Mar 27, 2008 10:20:43 AM | MR Laszlo Oroszlany | x x | nor the help nor the wiki page is full enough |
4: Hours worked
| Group | Days worked | FTEs |
| USL | 74 | 4.2 |
| OSG | 67.2 | 3.8 |
5: Performance metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 98.8% |
| Technology throughput | 7000 hours | 8367 hours | 8231 hours |
| Capability job completion rate | 70% | 90% | 98% |
| Technology MTBF | 100 hours | 126.4 hours | 183 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% | 99% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.0 |
| SP serviceability | 80% | 99% | 99.5% | 100% |
