HECToR Monthly Report, February 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 February 2012 to 08:00 1 March 2012
Number of hours: 696

1: Availability

Scheduled down time: 11 hours 18 minutes. This includes closing for the Phase 3 launch event on 13 February 2012.

Incidents

The following incidents were recorded:

SeverityNumber
10
21
317
40

Of the four severity levels, level 1 corresponds to a contractual failure.

Out of the 17 SEV-3 Incidents, 17 were attributed to node failure events.

Details of severity level 1 incidents

None this month.

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray000:00100.0%
Site000:00100.0%
External000:00 100.0%
Other/Unknown000:00 100.0%
Overall000:00 100.0%
  • 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
Kernel panic (Out-of-memory error/Opteron error) 4
MCA bank 4 error 3
Admindown by Node Health Check script(*) 3
HT lockup error 2
MCE threshold exceeded 2
Thermtrip on Opteron processor 1
xtbounce failure during PM. [Node not returned at end of PM](*) 1
Gemini failure 1

(*) No user job lost

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 Every Friday in February 30 24 0 0 24
Introduction to HECToR, NAG Oxford 6 February 2012 12 3 0 0 3
Debugging, Profiling and Optimising, NAG Oxford 7 - 9 February 2012 6 0 0 0 6
Parallel Programming with MPI, University of Sheffield 8 - 10 February 2012 30 22 0 0 22
Introduction to HECToR, NAG Oxford 20 February 2012 12 1 0 0 1
Debugging, Profiling and Optimising, NAG Oxford 21 - 23 February 2012 12 5 0 0 5

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 100.0%
Technology throughput 7000 hours 8367 hours 8648 hours
Capability job completion rate 70% 90% 100%
Technology MTBF 100 hours 126.4 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% 98.9%
Number of SP FTEs 7.3 8.0 8.7 8.6
SP Serviceability 80% 99% 99.5% 100%