HECToR Monthly Report, July 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 July 2011 to 08:00 1 August 2011
Number of hours: 744

1: Availability

Scheduled down time: 11 hours 23 minutes.

Incidents

The following incidents were recorded:

SeverityNumber
10
21
311
40

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

Out of the 11 SEV-3 Incidents, 11 were attributed to node failure events.

Details of severity level 1 incidents

None this month.

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray000:00100.0%
Site000:00 100.0%
External000:00 100.0 %
Other000:00100.0%
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
Software error (bug #774390) 1
Software problem (related to a user application) 2
HT lockup 1
MCA bank 4 error 6
Out Of Memory error (bug 774036) 1

2: Courses

This information is supplied by NAG Ltd
Title of Course Dates Available Places Ordinary Attendees Paying Attendees CSE Staff Total Attending
NERC Summer School Stream Beginner, Liverpool 4-5 July 2011 30 10 0 0 10
NERC Summer School Stream Advanced, Liverpool 4-5 July 2011 30 16 0 0 16

3: Quality Tokens

Date Tokens Awarded Comment Consortium
01/07/2011 * * * * * Everything working beautifully n01

4: Hours Worked

GroupDays workedFTEs
USL 75.9 4.3
OSG 74.8 4.2

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 100%
Technology throughput 7000 hours 8367 hours 8647 hours
Capability job completion rate 70% 90% 97.2%
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% 98.6%
Number of SP FTEs 7.3 8.0 8.7 8.5
SP Serviceability 80% 99% 99.5% 100.0 %