The HECToR Service is now closed and has been superceded by ARCHER.

HECToR Monthly Report, June 2010

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 2010 to 08:00 1 July 2010
Number of hours: 744

1: Availability

Scheduled down time: 7 hours 22 minutes.


The following incidents were recorded:


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

Out of the 26 SEV-3 Incidents, 26 were attributed to single node failure events. Three of the 5 SEV-2 Incidents were attributed to node fails where multiple nodes were impacted.

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-3722 15/06/2010 Cabinet emergency power down due to power supply failure 04:58 Cray

MTBF and Serviceability

  • 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
RX message header CRC Error 12
RX message CRC Error 6
RX packet sequence number error 2
MCA error (internal Opteron cache error) 2
UME bk4 (bk0 DIMMS) 1
Software/application related error 6

2: Courses

This information is supplied by NAG Ltd

There were no courses held in June.

3: Quality Tokens

Date Tokens Awarded Comment Consortium
14-June-2010 18:49:10 * * * * * Positive feedback. No Comment Supplied x01
14-June-2010 12:31:59 I have been waiting for a response from my query Q90696 for six days and haven't heard anything. This is holding my work up n02

4: Hours Worked

GroupDays workedFTEs
OSG55.0 5.0

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 99.3%
Technology throughput 7000 hours 8367 hours 8636 hours
Capability job completion rate 70% 90% 100%
Technology MTBF 100 hours 126.4 hours 732

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% 98.7%
Number of SP FTEs 7.3 8.0 8.7 10.7
SP Serviceability 80% 99% 99.5% 100%