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, December 10 2010

December 10, 2010 2:56 pm EST

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

ANNOUNCEMENTS

Suspension of Old User Account on Egate and Fgate

In preparation for the arrival of the new Greengate cluster (the first part of the new machine should arrive and be installed by the end of next week, although this is not yet 100% confirmed at the time of this writing) there will be a clean up of the existing user accounts on egate and fgate. During next week I the accounts that have not been used during the year 2010 will be blocked (this does not apply to the group leaders accounts). Note that the user data will NOT be deleted, only the login privileges will be suspended, and can be reactivated upon request.

For information please conctact Massimo (massimo.malagoli@chemistry.gatech.edu).

STATISTICS

FGATE

Uptime: 121 days
/home directory usage: 81% (1.1 TB available)
/backups directory usage: 100%

LSF usage for Week 48 (11/29-12/5) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 481 220936 11% 459 165 638
Hernandez 585 356575 18% 610 264 918
Sherrill 130 138514 7% 1065 743 1902
Other 15 35855 2% 2390 20 1900
Total 1211 751880 39% 621 273 925

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

Most productive user of the Week: galen 204890.

LSF usage for Month of November (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 340 552593 7% 1625 2653 4433
Hernandez 10738 928511 11% 86 298 395
Sherrill 1521 1027542 12% 676 2218 2968
Other 27 243714 3% 9026 36 8722
Total 12626 2752349 33% 218 592 831

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

EGATE

Uptime: 45 days
/theoryfs/common directory usage: 37% (419GB available)
/theoryfs/ccmst directory usage: 86% (123 GB available)

LSF usage for Week 48 (11/29-12/5) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 2 0 0% 0 0 0
Hernandez 633 329272 22% 520 387 922
Sherrill 1008 834818 55% 828 40 877
Other 95 55251 4% 582 0 586
Total 1738 1219340 81% 702 164 876

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

Most productive user of the Week: loriab 827135.

LSF usage for Month of November (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 5 0 0% 0 170 170
Hernandez 1188 1182355 18% 995 85 1093
Sherrill 6962 3560953 55% 511 759 1293
Other 544 575840 9% 1059 210 1284
Total 8699 5319132 82% 611 633 1264

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

 

TIP OF THE WEEK

By Massimo, Thodoris and Lucas

Using SSHFS to Access Remote Files

Sshfs (http://fuse.sourceforge.net/sshfs.html) is a filesystem client based on the SSH (Secure Shell) File Transfer Protocol.It allows a user to mount locally the files of a remote hosts supporting the SSHFTP protocol (SSHFTP is usually supported by any host supporting SSH). This might be very useful if you need to work locally on a remote file, and do not want to manually transfer back and forth modified version of  a file.

To install sshfs (on Linux) the easiest thing is to install the precompiled packages, for instance on Fedora Linux you can try typing (as the root user) yum install fuse-sshfs. This should take care of installing the software and the dependencies. On Debian based Linux distributions (for instance Ubuntu), you can foolow the instructions of this HOWTO.

Once the software is installed, there is one more operation needed before using it: you have to add your username to the fuse group, so that you are allowed to issue the fusemount command. To do this, edit (as root) the /etc/group file and add your username to the fuse group, for instance:

fuse:x:106:malagoli

You are now ready to start. To mount you home directory of, say, fgate, do the following:

  1. Create the mount point directory, let's call it f: mkdir f.
  2. Mount the remote files: sshfs user@fgate.chemistry.gatech.edu:~/ f. Here substitute user with your user name. If the remote user name is the same as in your local machine, you can omit it.
  3. Now under the local directory f you can see your home directory of fgate.
  4. When you are done with the remote files, you can unmount them by typing: fusemount -u f

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.