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Agenda-16-05-2011
Detailed agenda: Grid Operations Meeting 16 May 2011
1. Middleware releases and staged rollout
1.1. Update on the status of EMI-1 release (Cristina)
1.2. Staged Rollout (Mario)
gLite 3.2 components:
- VOBOX has been tested at LIP, is now in ready for production.
- L&B 2.1.21 under staged rollout by IFIC, first feedback OK.
- CREAM 1.6.6 and SGE_Utils under staged rollout by LIP. A problem seen due to the latest update of glibc.
The glibc has been updated from glibc-2.5-49 to glibc-2.5-58, before the update of the cream and sge_utils, and we saw segmentation faults in the BLAH component. This may turn to be more general. Sites running cream should check at least the BUpdater<LRMS>.
1.4 Interoperability
2. Operational Issues
2.1 Workdir and tmpdir for parallel jobs
New input from NGI_CH: Currently at CSCS the solutions in use are: CREAM JobWrapper and ARC custom submission scripts. Those solutions are obviously middleware specific.
The custom TMPDIR should be used also to solve the local disk throughput limits: with 16 or 32 cores the local disk can be stressed beyond its limit, and high performance network file systems have better performance. Experiences from other site administrator on this topic performance are needed to consider solutions for this problem.
The customization of a job workdir should consider both the job type and the job disk performance requirements. Can the second requirement be attached to the job submission? Is really needed?
2.2 Open Issues
- gLite 3.2 VOMS not published in the information system.
- It is not easy to automatically check the progression of this task, please ask to your site admin to take care of this.
- Upcoming surveys (will be announced in the tomorrow's OMB)
- Batch system utilization and distribution
- BDII high availability best practices.
3. AOB
3.2 Next meeting
Proposal: Monday 30 of May 14:00