HECToR Monthly Report, June 2008

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 2008 to 08:00 1 July 2008
Number of hours: 720

1: Availability

Scheduled down time: 64 hours 12 minutes. This includes a 48-hour slot for the X2 integration.

Incidents

The following incidents were recorded:

SeverityNumber
15
23
320
40

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

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-260 06/06/2008 HSN collapsed after compute node failure 01:32 Cray
Incident-268 17/06/2008 HSN collapse after compute node failure 03:13 Cray
Incident-270 19/06/2008 Voltage fault on c18-1c2s4n 00:59 Cray
Incident-278 23/06/2008 Close for security problem 15:52 Cray
Incident-282 27/06/2008 PDU fail in cab 9 delayed service return 00:22 Cray

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray514621:58:0096.7%
Site0 ~ 00:00:00100%
External0 ~ 00:00:00100%
Other0 ~ 00:00:00100%
Overall514621:58:0096.7%
  • Note 1: Serviceability%= 100*(WCT-SDT-UDT)/(WCT-SDT)
  • Note 2: MTBF (Mean Time Between Failures) is defined as 732/Number of failures.

2: Courses

This information is supplied by NAG Ltd

Title of Course Dates Available places Total attending HECToR Users HECToR Staff
10-11 June 2008 Programming Tricks for HECToR 12 4 4 4
12-13 June 2008 Techniques for Achieving Scalability 12 1 1 0

3: Quality tokens

None set this month

4: Hours worked

GroupDays workedFTEs
USL73.6 4.1
OSG 74.33 4.2

5: Performance metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 96.7%
Technology throughput 7000 hours 8367 hours 7750 hours
Capability job completion rate 70% 90% 93.3%
Technology MTBF 100 hours 126.4 hours 146 hours

Note: Technology throughput is calculated: 12*(732-UDT-SDT); 732 - 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% 100%
Number of SP FTEs 7.3 8.0 8.7 8.3
SP serviceability 80% 99% 99.5% 100%