The HECToR Service is now closed and has been superceded by ARCHER.

HECToR Monthly Report, April 2012

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

Dates covered: 08:00 1 April 2012 to 08:00 1 May 2012
Number of hours: 720

1: Availability

Scheduled down time: 8 hours 33 minutes.

Incidents

The following incidents were recorded:

SeverityNumber
10
20
37
40

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

Out of the 16 SEV-3 Incidents, 16 were attributed to node failure events.

Details of severity level 1 incidents

None this month.

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray000:00100.0%
Site000:00100.0%
External000:00 100.0%
Other/Unknown000:00 100.0%
Overall000:00100.0%
  • 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/bank 2 error 3
Software error - kernel panic 1
MCE threshold exceeded 1
Module voltage fault 1
Node down following PM (*) 1

(*) No user job lost

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, University of Bath 11-13 April 30 8 0 0 8
DL_POLY, University of Warwick 16-18 April 20 14 0 0 14
Advanced Computational Methods II (MSc), University of Southampton 20, 27 April 30 24 0 0 24
Scientific Visualisation, Culham Science Centre 21 April 21 21 0 0 21

3: Quality Tokens

Date Tokens Awarded Comment Consortium
13 April 2012 * * * (three positive tokens) No comment from user e10
22 April 2012 * * * * * (Five positive tokens) So far, so good x10

4: Hours Worked

GroupDays workedFTEs
USL 75.6 4.2
OSG 75.0 4.2

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 100%
Technology throughput 7000 hours 8367 hours 8681 hours
Capability job completion rate 70% 90% 100%
Technology MTBF 100 hours 126.4 hours

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% 100%
Number of SP FTEs 7.3 8.0 8.7 8.4
SP Serviceability 80% 99% 99.5% 100%