HECToR Monthly Report, January 2010

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

Dates covered: 08:00 1 January 2010 to 08:00 1 February 2010
Number of hours: 744

1: Availability

Scheduled down time: 11 hours 50 minutes.

Incidents

The following incidents were recorded:

SeverityNumber
13
22
313
40

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

Out of the 13 SEV-3 Incidents, 13 were attributed to single node failures.

Details of severity level 1 incidents

ID Date Description Length Attribution
Incident-2777 12/01/2010 Module fault: c19-2c1s0 02:16 Cray
Incident-2787 20/01/2010 Maintenance session overrun 03:50 Cray
Incident-2827 25/01/2010 High Speed Network failure 05:24 Cray

MTBF and Serviceability

AttributionFailuresMTBFUDTServiceability
Cray324411:30:0098.4%
Site000:00:00100%
External000:00:00100%
Other000:00:00100%
Overall324411:30:0098.4%
  • 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 5
RX message CRC Error 1
RX packet sequence number 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, Imperial 4 - 6 January 2010 30 17 0 0 17
OpenMP, Imperial 7 - 8 January 2010 30 11 0 0 11
Best Practice in HPC Software Development 11 - 15 January 2010 14 6 0 0 6
Parallel Programming with MPI, University of Bath 26 - 28 January 2010 30 11 1 0 12

3: Quality Tokens

None set this month.

4: Hours Worked

GroupDays workedFTEs
USL65.43.7
OSG78.24.4

5: Performance Metrics

Technology Provision

Description TSL FSL Value
Technology reliability 85% 98.5% 98.4%
Technology throughput 7000 hours 8367 hours 8504 hours
Capability job completion rate 70% 90% 96.9%
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 8.1
SP Serviceability 80% 99% 99.5% 100%