The HECToR Service is now closed and has been superceded by ARCHER.

HECToR Monthly Report, October 2007

Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.

Dates covered: 08:00 1 October 2007 to 08:00 1 November 2007
Number of hours: 744

1: Availability

Scheduled down time: 7 hours 28 minutes

Incidents

The following incidents were recorded:

SeverityNumber
15
20
327
40

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

Details of severity level 1 incidents

IDDateDescriptionLengthAttribution
Incident-602/10/2007Module failure affecting 4 nodes caused flooding8:40Cray
Incident-704/10/2007Link failure caused total interconnect collapse1:41Cray
Incident-1008/10/2007Blade failure caused seastar network collapse1:39Cray
Incident-3828/10/2007Progressive failure of system5:50Cray
Incident-3929/10/2007Progressive failure of system1:22Cray

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray514619:1297.4%
Site0 - 0:00100%
External0-0:00100%
Other0 - 0:00100%
Overall514619:1297.4%
  • 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 Length (Days) Place days HECToR User Days HECToR Staff Days
Introduction to HECToR 30/10/07 1 20 2 0
Porting Codes to HECToR 31/10/07 1 12 2 0
Techniques for Achieving Scalability 1/11/07 - 2/11/07 2 24 0 0

3: Quality tokens

Date Value Comment
Oct 15, 2007 6:26:07 PM * * * *  

4: Hours worked

Note: Mr Mike Brown (OSG) has reported in total over 246 hours in October 2007.

GroupDays workedFTEs
USL87.114.91
OSG66.573.76

5: Performance metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.50% 97.4%
Technology throughput 7000 hours 8367 hours 8464 hours
Capability job completion rate 70% 90% 100%
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% 98%
Number of SP FTEs 7.3 8.0 8.7 8.7
SP serviceability 80% 99% 99.5% 100%