Center for Computational Molecular Science and Technology Georgia Institute of Technology Center for Computational Molecular Science and Technology School of Chemistry and Biochemistry

CCMST Weekly News, June 3 2011

June 3, 2011 12:55 pm EDT

1. Announcements
2. Statistics
3. Tip of the Week

ANNOUNCEMENTS

Scheduled Power Outage, June 4 2011

Please note that there is a scheduled power outage for the MoSE Building scheduled for this coming Saturday, June 4 2001. This power outage will affect the CCMST clusters fgate and ggate. Both clusters will have to be shut down and powered off. All jobs running will be killed.

Fgate and ggate will be shut down and powered off this Friday, June 3 2001, in the late afternoon. All jobs running at the shutdown time will be killed. The two clusters should be up and running again by Sunday evening.

Note that egate will not be affected by the power outage.

Please contact Massimo (massimo.malagoli@chemistry.gatech.edu) if you have any question.

STATISTICS

GGATE

Uptime: 11 days
/home directory usage: 23% (8.5 TB available)
/backups directory usage: 63%

Utilization for period from: 05/03/2011 to: 06/02/2011

Note: Full statistics for ggate are available online at: http://ggate.chemistry.gatech.edu:8080 (the link works only for the Gatech Chemistry network)

FGATE

Uptime: 140 days
/home directory usage: 83% (1.1 TB available)
/backups directory usage: 98%

LSF usage for Week 21 (5/23-5/29) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 162 52786 3% 326 310 658
Hernandez 72255 75602 4% 1 385 386
Sherrill 749 228770 12% 305 401 739
Other 2 35703 2% 17852 19 4485
Total 73168 392864 20% 5 385 390

Note: percentages refer to the total CPU time available for the period.

Most productive user of the Week: loriab 228770.

EGATE

Uptime: 88 days
/theoryfs/common directory usage: 97% (24 GB available)
/theoryfs/ccmst directory usage: 93% (64 GB available)

LSF usage for Week 21 (5/23-5/29) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 4 1562 0% 391 1 401
Hernandez 21085 1350072 89% 64 8035 8101
Sherrill 25 17830 1% 713 1 735
Total 21114 1369464 91% 65 8024 8090

Note: percentages refer to the total CPU time available for the period.

Most productive user of the Week: galen 1350072.

TIP OF THE WEEK

By Massimo

Xargs

Xargs is a very powerful command that takes the output of a command and pass it as argument of another command. It is particularly useful when the output of the first command is very long, and would exceed the default command line argument length. For instance, when trying to delete too many files using rm, one may get the message: /bin/rm Argument list too long. The use of xargs avoid this problem. For instance, to delete all the core files under a home directory:

find ~ -name core -type f -print0 | xargs -0 /bin/rm -f

To archive all the files of one type (for instance jpg images):

find ~ -name *.jpg -type f -print | xargs tar -cvzf images.tar.gz

 

Do you have usage tips that you want to share with the other CCMST users? Please send them to Massimo (massimo.malagoli@chemistry.gatech.edu) for inclusion in the Tip of the Week section.