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Location: Conference room of computer center

Time: 10am-11:30am Aug 23rd 2011

Attendants: Gongxing sun, Ziyan Deng, Lei Yang, Xiaofei Yan, Xiaomei Zhang, Qiulan Huang, Jinyan Shi, Wenjing Wu

Record: Wenjing Wu

Meeting Minutes:

GOS:

have successfully setup the local environment of HK site and submitted test jobs. Some of the jobs succeed, some fail after running for a while,

will retrieve log files to debug the problems.

Suggestion:

1 . get root account for a better control of the local resources.

2. further tests with BES file transferring system

DIRAC:

Have sent hundreds of jobs via Ganga:

1) Ganga+PBS local job submission to IHEP cluster(400 jobs), no problems appear.

2).Ganga+DIRAC , remote job submission to GUGAS(100jobs)

Discussion:

1) how to transfer job output back to SE? develop a simple model based on the experience of CMS and ATLAS model.

2) job split

Metadata:

Have setup an AMGA sever, and gained some hands on experience on AMGA client commands.

Run into a problem: Insert the first attribute of an entry will result errors.

Cloud Computing:

1 the current OS image file is 30GB, investigating how to distribute the big image file

2. trying connect Opennebula with PBS, so Opennebula can decide to start/stop virtual machines base don the information from PBS queues.

BES File transfer system:

the client is not stable enough. Need further work

Volunteer Computing:

Problem: job retrieved by client aborts immediately. Can not decide if this is a server problem or application failure.

Solution: set up a new BOINC test bed, starting from scratch, to identify the problem.

CVMFS Installation on IHEP cluster work nodes:

Have found out why CVMFS client failed at connecting local squid servers, needs to clean up the residue, modify the quattor template,

and redeploy CVMFS clients to all work nodes.

-- WenjingWu - 2011-08-23

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Topic revision: r2 - 2011-09-06 - WenjingWu
 
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