HECToR Monthly Report, February 2010
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 2010 to 08:00 1 March 2010
Number of hours: 672
1: Availability
Scheduled down time: 13 hours 06 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 4 |
| 2 | 0 |
| 3 | 26 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 26 SEV-3 Incidents, 26 were attributed to single node failures.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-2972 | 12/02/2010 | High Speed Network Failure | 04:55 | Cray |
| Incident-2977 | 12/02/2010 | High Speed Network Failure | 02:40 | Cray |
| Incident-3017 | 18/02/2010 | PBS Failure | 11:59 | Cray |
| Incident-3062 | 24/02/2010 | High Speed Network Failure | 01:06 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 4 | 183 | 20:40:00 | 96.9% |
| Site | 0 | ∞ | 00:00:00 | 100% |
| External | 0 | ∞ | 00:00:00 | 100% |
| Other | 0 | ∞ | 00:00:00 | 100% |
| Overall | 4 | 183 | 20:40:00 | 96.9% |
- 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 single node failures
| Error Type | Number |
| UME bk4 (Dimms) | 1 |
| UME bk 0-4 (Internal Opteron) | 1 |
| RX message header CRC Error | 11 |
| RX packet sequence number error | 5 |
| MCA bk0 error (internal Opteron cache error) | 1 |
| Software/application Related Error | 5 |
| Admin Down/out of config | 2 |
2: Courses
This information is supplied by NAG Ltd| Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
| Introduction to HECToR, Oxford | 3 February 2010 | 12 | 1 | 0 | 0 | 1 |
| Quad Core Programming, Oxford | 4 - 5 February 2010 | 12 | 2 | 0 | 0 | 2 |
| Advanced Computational Methods, University of Southampton | Every Thursday in Feb (4,11,18,25) | 20 | 12 (of which 9 MSc students) | 0 | 0 | 12 (numbers vary slightly from week to week) |
3: Quality Tokens
| Date | Tokens Awarded | Comment | Consortium |
| 18-Feb-2010 21:32:35 | • | Negative feedback. No comments added by user | n02 |
| 16-Feb-2010 10:18:31 | * * * * * | Positive feedback. No comments added by user | e142 |
| 05-Feb-2010 08:36:35 | * * * * * | Excellent user support on HECToR | e124 |
4: Hours Worked
| Group | Days worked | FTEs |
| USL | 74.0 | 4.2 |
| OSG | 80.0 | 4.5 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 96.9% |
| Technology throughput | 7000 hours | 8367 hours | 8378 hours |
| Capability job completion rate | 70% | 90% | 100% |
| Technology MTBF | 100 hours | 126.4 hours | 183 |
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 | 8.7 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
