HECToR

HECToR Monthly Report, August 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 August 2012 to 08:00 1 September 2012
Number of hours: 744

1: Availability

Scheduled down time: 10 hours 48 minutes.

Incidents

The following incidents were recorded:

Severity	Number
1	0
2	2
3	10
4	0

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

Out of the 10 SEV-3 Incidents, 10 were attributed to node failure events.

Details of severity level 1 incidents

None this month.

MTBF and Serviceability

Attribution	Failures	MTBF	UDT	Serviceability
Cray	0	∞	00:00	100.0%
Site	0	∞	00:00	100.0%
External	0	∞	00:00	100.0%
Other/Unknown	0	∞	00:00	100.0%
Overall	0	∞	00:00	100.0%

• 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 error	4
Node Admindown	3
MCE threshold exceeded error	2
Heartbeat error	1

2: Courses

This information is supplied by NAG Ltd

None this month.

3: Quality Tokens

None set this month

4: Hours Worked

Group	Days worked	FTEs
USL	86.4	4.9
OSG	74.7	4.2

5: Performance Metrics

Technology Provision

Description	TSL	FSL	Value
Technology reliability	85%	98.5%	100%
Technology throughput	7000 hours	8367 hours	8654 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%	97.3%
Number of SP FTEs	7.3	8.0	8.7	9.1
SP Serviceability	80%	99%	99.5%	100%