HECToR Monthly Report, August 2009
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 August 2009 to 08:00 1 September 2009
Number of hours: 744
1: Availability
Scheduled down time: 15 hours 6 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 4 |
| 2 | 0 |
| 3 | 22 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 22 SEV-3 Incidents, 21 were attributed to single node failures, and another 1 nodes closed down by administrators
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-2091 | 12/08/2009 | Link Inactive c17-1c1s7s0l5 c17-2c1s7s3l0 | 06:53 | Cray |
| Incident-2127 | 19/08/2009 | Maintenance session over-run | 00:12 | Cray |
| Incident-2157 | 23/08/2009 | Blue Arc problem - /nfs02 filesystems unmounted | 16:11 | Cray |
| Incident-2187 | 28/08/2009 | Link Inactive error | 01:23 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 4 | 183 | 24:39:00 | 96.6% |
| Site | 0 | ∞ | 00:00:00 | 100% |
| External | 0 | ∞ | 00:00:00 | 100% |
| Other | 0 | ∞ | 00:00:00 | 100% |
| Overall | 4 | 183 | 24:39:00 | 96.6% |
- 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 XT single node failures
| Error Type | Number |
| UME bk0/bk4 (Dimms) | 13 |
| RX message header CRC Error | 6 |
| MCA bk0 error (internal Opteron) | 2 |
| Admin down | 1 |
2: Courses
This information is supplied by NAG Ltd| Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
| X2 Training, Imperial College London | 5 August 2009 | 6 | 4 | 0 | 0 | 4 |
| Introduction to HECToR, NAG Oxford | 26 August 2009 | 12 | 3 | 0 | 0 | 3 |
3: Quality Tokens
None set this month.4: Hours Worked
| Group | Days worked | FTEs |
| USL | 73.0 | 4.1 |
| OSG | 76.2 | 4.3 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 96.6% |
| Technology throughput | 7000 hours | 8367 hours | 8307 hours |
| Capability job completion rate | 70% | 90% | 100 % |
| 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% | 100% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.4 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
