HECToR Monthly Report, January 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 January 2008 to 08:00 1 February 2008
Number of hours: 744
1: Availability
Scheduled down time: 15 hours 15 minutes
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 5 |
| 2 | 0 |
| 3 | 19 |
| 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-92 | 16/01/2008 | L0 reboot which took out a module and brought whole system down | 1:59:00 | Cray |
| Incident-95 | 18/01/2008 | Compute nodes locked and allocated | 2:00:00 | Cray |
| Incident-96 | 22/01/2008 | Flood event started by lustre nodes | 1:56:00 | Cray |
| Incident-98 | 23/01/2008 | DDN Disk controller failure | 4:05:00 | Cray |
| Incident-105 | 31/01/2008 | University network failure | 1:03:00 | UoE |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 4 | 183 | 10:00:00 | 98.6% |
| Site | 1 | 732 | 01:03:00 | 99.9% |
| External | 0 | - | 00:00:00 | 100% |
| Other | 0 | - | 00:00:00 | 100% |
| Overall | 5 | 146 | 11:03:00 | 98.5% |
- 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 |
| Introduction to HECToR | 16/1/2008 | 1 | 20 | 1 | 2 |
3: Quality tokens
| Jan 18, 2008 10:50:09 AM | Dr Richard D Sandberg | * * * * * | System very reliable and available |
4: Hours worked
| Group | Days worked | FTEs |
| USL | 70.7 | 4.0 |
| OSG | 41.7 | 4.8 |
5: Performance metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 98.6% |
| Technology throughput | 7000 hours | 8367 hours | 8468 hours |
| Capability job completion rate | 70% | 90% | 93.5% |
| 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 | 8.8 |
| SP serviceability | 80% | 99% | 99.5% | 99.9% |
