The HECToR Service is now closed and has been superceded by ARCHER.

HECToR Monthly Report, February 2013

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 2013 to 08:00 1 March 2013
Number of hours: 744

1: Availability

Scheduled down time: 3 hours 42 minutes.

Incidents

The following incidents were recorded:

SeverityNumber
10
22
315
40

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

Out of the 15 SEV-3 Incidents, 15 were attributed to node failure events.

Details of severity level 1 incidents

None this month

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray000:00100%
Site000:00100%
External000:00 100%
Other/Unknown000:00 100%
Overall000:00100%
  • 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 4
User application causing nodes to admindown (bug#793934) 4
Heartbeat error 3
MCE threshold exceeded error 2
MCE bk4 error (Opteron) 1
Gemini network link failed to node 1

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 1, 8, 15, 22 February 2013 30 30 0 0 30
Parallel Programming with MPI, University of Sheffield 13-15 February 2013 25 19 0 0 19

3: Quality Tokens

None set this month.

Date Tokens Awarded Comment Consortium
21 February 2013 * * * * (four positive tokens) No comment from user d45

4: Hours Worked

GroupDays workedFTEs
USL 72.4 4.1
OSG 76.3 4.3

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 200%
Technology throughput 7000 hours 8367 hours 8746 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), 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% 98.4%
Number of SP FTEs 7.3 8.0 8.7 8.4
SP Serviceability 80% 99% 99.5% 100%