HECToR Monthly Report, January 2011
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
This report relates to the Phase 2a service only. Performance statistics for the non-contractual Phase 2b system can be found here.
Dates covered: 08:00 1 January 2011 to 08:00 1 February 2011
Number of hours: 744
1: Availability
Scheduled down time: 8 hours 18 minutes.
Incidents
The following incidents were recorded:
Severity | Number |
1 | 3 |
2 | 0 |
3 | 13 |
4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 13 SEV-3 Incidents, 13 were attributed to single node failure events.
Details of severity level 1 incidents
ID | Date | Description | Length | Attribution |
Incident-5476 | 06/01/2011 | Cabinet Emergency Power Off Due to Power Supply Failure | 02:23 | Cray |
Incident-5506 | 08/01/2011 | esFS disruption due to module cage problem | 00:36 | Cray |
Incident-5606 | 22/01/2011 | Card cage failure | 01:59 | Cray |
MTBF and Serviceability
Attribution | Failures | MTBF | UDT | Serviceability |
Cray | 3 | 244 | 04:58 | 99.3% |
Site | 0 | ∞ | 00:00 | 100% |
External | 0 | ∞ | 00:00 | 100% |
Other | 0 | ∞ | 00:00 | 100% |
Overall | 3 | 244 | 04:58 | 99.3% |
- 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 |
RX message CRC Error | 3 |
RX message header CRC Error | 6 |
MCA bank 4 error (DIMMs) | 2 |
RX packet sequence number error | 2 |
2: Courses
This information is supplied by NAG LtdTitle of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
Parallel Programming with MPI, Imperial College London | 4-6 January 2011 | 40 | 11 | 1 | 0 | 12 |
OpenMP, Imperial College London | 11-12 January 2011 | 40 | 11 | 0 | 1 | 12 |
Parallel Programming with MPI, University of Bath | 19-21 January 2011 | 32 | 10 | 0 | 0 | 10 |
3: Quality Tokens
Date | Tokens Awarded | Comment | Consortium |
12/01/2011 | * * * * * | Very fast reply to support request from helpdesk | c01/e05/e117 |
17/01/2011 | * * * * * | Five positive tokens. No comment from the user | e05 |
27/01/2011 | * * * * | Four positive tokens. No comment from the user | d23 |
4: Hours Worked
Group | Days worked | FTEs |
USL | 65.2 | 3.67 |
OSG | 79.8 | 4.50 |
5: Performance Metrics
Technology Provision
Description | TSL | FSL | Value |
Technology reliability | 85% | 98.5% | 99.3% |
Technology throughput | 7000 hours | 8367 hours | 8624 hours |
Capability job completion rate | 70% | 90% | 100% |
Technology MTBF | 100 hours | 126.4 hours | 244 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% | 99.6% |
Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.2 |
SP Serviceability | 80% | 99% | 99.5% | 100% |