HECToR Monthly Report, November 2009

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

Dates covered: 08:00 1 November 2009 to 08:00 30 November 2009
Number of hours: 720

1: Availability

Scheduled down time: 12 hours 43 minutes.

Incidents

The following incidents were recorded:

SeverityNumber
14
20
318
40

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

Out of the 18 SEV-3 Incidents, 18 were attributed to single node failures.

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-2502 06/11/2009 Link inactive failure 01:12 Cray
Incident-2532 15/11/2009 Close for security vulnerability 30:56 External
Incident-2547 19/11/2009 Reload after PSU failure on module c16-2c2s0 02:13 Cray
Incident-2572 22/11/2009 Link inactive failure 10:01 Cray

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray324413:26:0098.1%
Site000:00:00100%
External173230:56:00100%
Other000:00:00100%
Overall418344:22:0093.7%
  • 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
UME bk4 (Dimms) 2
UME bk 0-4 (Internal Opteron) 3
RX message header CRC Error 7
RX packet sequence number error 2
Heartbeat fault 2
Out of memory error 1
Suspected software error 1

2: Courses

This information is supplied by NAG Ltd
Title of Course Dates Available Places Ordinary Attendees Paying Attendees CSE Staff Total Attending
Quad Core Training, NAG Manchester 9 - 10 November 2009 14 11 0 1 12
DLPOLY, NAG Manchester 11 November 2009 20 18 0 1 19

3: Quality Tokens

Date Tokens Awarded Comment Consortium
12-Nov-2009 18:39:45 * * * * Positive tokens, no user comments e82
21-Nov-2009 12:18:27 * * * Positive tokens, no user comments e05

4: Hours Worked

GroupDays workedFTEs
USL76.74.3
OSG87.2 4.9

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 98.1%
Technology throughput 7000 hours 8367 hours 8099 hours
Capability job completion rate 70% 90% 100 %
Technology MTBF 100 hours 126.4 hours 244

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 9.2
SP Serviceability 80% 99% 99.5% 100%