HECToR Monthly Report, June 2012
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 June 2012 to 08:00 1 July 2012
Number of hours: 720
1: Availability
Scheduled down time: 11 hours 06 minutes.
Incidents
The following incidents were recorded:
Severity | Number |
1 | 2 |
2 | 0 |
3 | 8 |
4 | 0 |
Of the four severity levels, level 1 corresponds to a contractual failure.
Out of the 8 SEV-3 Incidents, 8 were attributed to node failure events.
Details of severity level 1 incidents
ID | Date | Description | Length | Attribution |
Incident-7591 | 14/06/2012 | Problem with esFS2 | 00:53 | Cray |
Incident-7601 | 20/06/2012 | Maintenance overrun | 02:38 | Cray |
MTBF and Serviceability
Attribution | Failures | MTBF | UDT | Serviceability |
Cray | 2 | 366 | 03:31 | 99.5% |
Site | 0 | ∞ | 00:00 | 100.0% |
External | 0 | ∞ | 00:00 | 100.0% |
Other/Unknown | 0 | ∞ | 00:00 | 100.0% |
Overall | 2 | 366 | 03:31 | 99.5% |
- 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 |
Node Admindown (*) | 2 |
Node voltage fault | 3 |
Kernel panic (Opteron error) | 1 |
MCA bank 4/bank 6 error | 2 |
(*) No user job lost
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, UCL | 12 - 14 June 2012 | 30 | 23 | 1 | 0 | 24 |
Parallel I/O, NAG Manchester | 26 June 2012 | 12 | 2 | 1 | 2 | 5 |
3: Quality Tokens
None set this month
4: Hours Worked
Group | Days worked | FTEs |
USL | 69.2 | 3.9 |
OSG | 76.7 | 4.3 |
5: Performance Metrics
Technology Provision
Description | TSL | FSL | Value |
Technology reliability | 85% | 98.5% | 99.5% |
Technology throughput | 7000 hours | 8367 hours | 8602 hours |
Capability job completion rate | 70% | 90% | 100% |
Technology MTBF | 100 hours | 126.4 hours | 366 hours |
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% | 99.2% |
Number of SP FTEs | 7.3 | 8.0 | 8.7 | 8.2 |
SP Serviceability | 80% | 99% | 99.5% | 100% |