HECToR Monthly Report, November 2011

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 2011 to 08:00 1 December 2011
Number of hours: 720

1: Availability

Scheduled down time: 91 hours 11 minutes. This includes extended maintenance required for the Phase 3 upgrade.

Incidents

The following incidents were recorded:

SeverityNumber
13
20
32
40

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

Out of the 2 SEV-3 Incidents, 2 were attributed to node failure events.

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-6929 14/11/2011 esFS problem 34:49 Cray
Incident-6931 18/11/2011 Loss of cooling water 06:57 Site
Incident-6931 28/11/2011 Plant cooling failure 07:14 Site

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray1 732 34:4994.5%
Site2 366 14:1197.7%
External000:00 100.0%
Other/Unknown000:00 100.0%
Overall3 244 49:00 92.2%
  • 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
MCA bank 4 error 2

2: Courses

This information is supplied by NAG Ltd
Title of Course Dates Available Places Ordinary Attendees Paying Attendees CSE Staff Total Attending
Parallel Programming with MPI, King's College London 7 - 9 November 2011 45 21 0 0 21
OpenMP, King's College London 10 - 11 November 2011 45 14 0 5 14
An Introduction to CUDA Programming, NAG Manchester 21 - 22 November 2011 25 13 2 0 15
An Introduction to OpenCL Programming, NAG Manchester 24 - 25 November 2011 25 12 0 0 12

3: Quality Tokens

None set this month.

4: Hours Worked

GroupDays workedFTEs
USL 78.9 4.4
OSG 73.0 4.1

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 94.5%
Technology throughput 7000 hours 8367 hours 7101 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% 98.2%
Number of SP FTEs 7.3 8.0 8.7 8.5
SP Serviceability 80% 99% 99.5% 97.7%