HECToR Monthly Report, December 2007
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 December 2007 to 08:00 1 January 2008
Number of hours: 744
1: Availability
Scheduled down time: 11 hours 25 minutes
Incidents
The following incidents were recorded:
Severity | Number |
1 | 1 |
2 | 0 |
3 | 11 |
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-76 | 27/12/2007 | OST nodes fail on partial HSN collapse | 2:31:00 | Cray |
MTBF and Serviceability
Attribution | Failures | MTBF | UDT | Serviceability |
Cray | 1 | 744 | 02:31:00 | 99.6% |
Site | 0 | - | 00:00:00 | 100% |
External | 0 | - | 00:00:00 | 100% |
Other | 0 | - | 00:00:00 | 100% |
Overall | 1 | 744 | 02:31:00 | 99.6% |
- 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 | Length (Days) | Available places | HECToR User Days | HECToR Staff Days |
Programming for Porting and Maintenance | 4/12/07 - 5/12/07 | 2 | 12 | 0 | 0 |
Programming Tricks for HECToR | 11/12/07 - 12/12/07 | 2 | 12 | 0 | 0 |
Techniques for Achieving Scalability | 13/12/07 - 14/12/07 | 2 | 12 | 0 | 0 |
3: Quality tokens
Dec 17, 2007 4:20:20 PM | Prof Dario Alfe` | * * * * * | very good machine, staff extremely helpful |
4: Hours worked
Group | Days worked | FTEs |
USL | 73.2 | 4.3 |
OSG | 68.2 | 3.8 |
5: Performance metrics
Technology Provision
Description | TSL | FSL | Value |
Technology reliability | 85% | 98.5% | 99.6% |
Technology throughput | 7000 hours | 8367 hours | 8617 hours |
Capability job completion rate | 70% | 90% | 98% |
Technology MTBF | 100 hours | 126.4 hours | 744 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 | 8.1 |
SP serviceability | 80% | 99% | 99.5% | 100% |