HECToR Monthly Report, February 2014
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 2014 to 08:00 1 March 2014
Number of hours: 672
1: Availability
Scheduled down time: none this month.
Incidents
The following incidents were recorded:
Severity | Number |
1 | 1 |
2 | 0 |
3 | 6 |
4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 6 SEV-3 Incidents, 6 were attributed to node failure events.
Details of severity level 1 incidents
ID | Date | Description | Length | Attribution |
Incident-9086 | 01/02/2014 | DDN problems | 41:28 | Cray |
MTBF and Serviceability
Attribution | Failures | MTBF | UDT | Serviceability |
Cray | 1 | 732 | 41:28 | 93.8% |
Site | 0 | ∞ | 00:00 | 100% |
External | 0 | ∞ | 00:00 | 100% |
Overall1 | 732 | 41:28 | 93.8% |
- 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 |
MCE bk0 - bk4 error (Opteron) | 2 |
Heartbeat fault | 1 |
Software error - kernel panic | 1 |
Kernel panic caused by Memory DIMM | 1 |
Module voltage fault | 1 |
2: Courses
This information is supplied by NAG Ltd
Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
Advanced Computational Methods II (MSc), University of Southampton | 7, 14, 21, 28 February 2014 | 50 | 40 | 0 | 0 | 40 |
3: Quality Tokens
None set this month.4: Hours Worked
Group | Days worked | FTEs |
USL | 71.1 | 4.0 |
OSG | 76.3 | 4.3 |
5: Performance Metrics
Technology Provision
Description | TSL | FSL | Value |
Technology reliability | 85% | 98.5% | 93.8% |
Technology throughput | 7000 hours | 8367 hours | 8286 hours |
Capability job completion rate | 70% | 90% | 98.1% |
Technology MTBF | 100 hours | 126.4 hours | 732 |
Note: Technology throughput is calculated: 12*(732-UDT-SDT), where 732 is the 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% | 96.5% |
Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.3 |
SP Serviceability | 80% | 99% | 99.5% | 100% |