HECToR Monthly Report, September 2013
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 September 2013 to 08:00 1 October 2013
Number of hours: 720
1: Availability
Scheduled down time: none.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 1 |
| 2 | 0 |
| 3 | 9 |
| 4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 10 SEV-3 Incidents, 10 were attributed to node failure events.
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-8776 | 05/09/2013 | /esfs1 problem | 00:20 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 1 | 732 | 00:20 | 99.95% |
| Site | 0 | ∞ | 00:00 | 100% |
| External | 0 | ∞ | 00:00 | 100% |
| Overall | 1 | 732 | 00:20 | 99.95% |
- 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 bk4 error (Opteron) | 2 |
| Node voltage fault | 2 |
| Node heartbeat error | 2 |
| Kernel panic (LBUG) | 1 |
| Node thermtrip | 1 |
| Out of Memory errors (bug 790101) | 1 |
| Disabled at system boot time | 1 |
2: Courses
This information is supplied by NAG Ltd
| Title of Course | Dates | Available Places | Ordinary Attendees | Paying Attendees | CSE Staff | Total Attending |
| An Introduction to Unified Parallel C (UPC), Culham Science Centre | 6 September 2013 | 18 | 1 | 0 | 2 | 3 |
| Parallel Programming with MPI, University of Loughborough | 10-12 September 2013 | 40 | 30 | 0 | 0 | 30 |
| Accelerating Applications with CUDA, NAG Manchester | 17-19 September 2013 | 18 | 13 | 2 | 0 | 15 |
| Fortran 95, NAG Manchester | 23-25 September 2013 | 18 | 9 | 0 | 2 | 11 |
| An Introduction to Unified Parallel C (UPC), University of Warwick | 26 September 2013 | 30 | 10 | 0 | 0 | 10 |
| Coarray Fortran, University of Warwick | 27 September 2013 | 30 | 12 | 0 | 0 | 12 |
3: Quality Tokens
None set this month.4: Hours Worked
| Group | Days worked | FTEs |
| USL | 85.1 | 4.8 |
| OSG | 71.0 | 4.0 |
5: Performance Metrics
Technology Provision
| Description | TSL | FSL | Value |
| Technology reliability | 85% | 98.5% | 99.9% |
| Technology throughput | 7000 hours | 8367 hours | 8780 hours |
| Capability job completion rate | 70% | 90% | 100% |
| 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% | 98.4% |
| Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.6 |
| SP Serviceability | 80% | 99% | 99.5% | 100% |
