HECToR Monthly Report, February 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 February 2008 to 08:00 1 March 2008
Number of hours: 696

1: Availability

Scheduled down time: 21 hours 48 minutes

Incidents

The following incidents were recorded:

SeverityNumber
17
20
326
42

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

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-115 06/02/2008 Inactive link between c18-0c0s4s3 and c16-0c0s4s3 1:30:00 Cray
Incident-120 12/02/2008 HSN collapse after link inactive failure 1:18:00 Cray
Incident-125 16/02/2008 System reloaded due to nodes out of memory 2:53:00 Cray
Incident-126 17/02/2008 Reload required due to Lustre problems 0:58:00 Cray
Incident-130 23/02/2008 OST nodes fail after Lustre errors 2:46:00 Cray
Incident-131 24/02/2008 OST/MDS nodes fail after Lustre errors 1:59:00 Cray
Incident-142 29/02/2008 OST nodes fail after Lustre errors 3:11:00 Cray

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray710514:35:0097.8%
Site0 - 01:03:00100%
External0 - 00:00:00100%
Other0 - 00:00:00100%
Overall710511:03:0097.8%
  • 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
18 Feb Introduction to HECToR 20 14 4 1
19-20 Feb Tools and Techniques 12 10 5 1
21-22 Feb Testing and Benchmarking 12 8 4 1
27-28 Feb Scientific Visualisation 12 4 1 3

3: Quality tokens

Feb 4, 2008 3:05:04 PM Mr Anthony J Devey * * * * *  

4: Hours worked

GroupDays workedFTEs
USL 71.0 4.0
OSG 69.3 3.9

5: Performance metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 97.8%
Technology throughput 7000 hours 8367 hours 8347 hours
Capability job completion rate 70% 90% 97%
Technology MTBF 100 hours 126.4 hours 105 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 7.9
SP serviceability 80% 99% 99.5% 100%