The HECToR Service is now closed and has been superceded by ARCHER.

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:

SeverityNumber
12
20
38
40

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

AttributionFailuresMTBFUDTServiceability
Cray2 366 03:3199.5%
Site000:00100.0%
External000:00 100.0%
Other/Unknown000:00 100.0%
Overall2366 03:3199.5%
  • 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 Ltd
Title 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

GroupDays workedFTEs
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%