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, September 30 2011

September 30, 2011 5:31 pm EDT

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

 

ANNOUNCEMENTS

AACP Seminar Series

October 3, 2011 7:30 PM – 9:00 PM
MoSE G011
Prof. Steve Buratto, University of California, Santa Barbara
Photophysics of Organic Semiconductors Probed by Single Molecule Fluorescence and High Spatial Resolution Chemical Imaging

School Colloquium

October 6, 2011 4:00 PM – 5:00 PM
MoSE G011
Prof. Donald Darensbourg, Texas A & M University
Polymers derived from cyclic ethers and carbon dioxide

COPE Seminar Series

October 7, 2011 4:00 PM – 5:00 PM
MoSE G011
Prof. Mark Thompson, University of Southern California
Exciton Management in Organic Solar Cells

STATISTICS

GGATE

Uptime: 104 days
/home directory usage: 45% (6.3 TB available)
/backups directory usage: 95%

Utilization for period from: 08/30/2011 to: 09/29/2011

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: 68 days
/home directory usage: 80% (1.2 TB available)
/backups directory usage: 87%

LSF usage for Week 38 (9/19-9/25) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 78 177573 9% 2277 54 3383
Hernandez 3 335 0% 112 0 86
Sherrill 5047 480358 25% 95 501 604
Other 2 2196 0% 1098 0 1127
Total 5130 660460 34% 129 493 647

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

Most productive user of the Week: parker 347430.

EGATE

Uptime: 9 days
/theoryfs/common directory usage: 44% (372 GB available)
/theoryfs/ccmst directory usage: 96% (40 GB available)

LSF usage for Week 38 (9/19-9/25) (times are in minutes)
GroupJobsTotal CPUAvg CPUAvg WaitAvg Trnr.
Bredas 16 0 0% 0 0 0
Hernandez 53 6780 0% 128 0 171
Sherrill 38 109778 7% 2889 0 2943
Other 50 62854 4% 1257 0 1327
Total 157 179413 12% 1143 0 1193

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

Most productive user of the Week: rnear 62854.

TIP OF THE WEEK

By Massimo

Password Security

Let's review some good practices for password security:

  • A password should be at least 7 characters (more is better)
  • It should contain characters from at least three of the following four character sets (having all four is better): lower case letters, upper case letters, numbers, punctuation and general characters: ~!@#$%^&*()_+{}[].
  • It should not be based on a dictionary word.
  • Finally, and this is quite important, one should never use the same password for different accounts.

Given these rules, here are some suggestions on how to obtain a series of passwords that follow the above rules while being easy to remember (this is just an example, do not copy it!):

  • One could start with a mnemonic phrase, say "The Little Frog Jumped Into The Pond," and pick the first letter of each word. This gives us tlfjitp
  • Now let's capitalize a letter, say the third one: tlFjitp.
  • Now we substitute one or more letter with a number: tlFj1tp
  • Finally we add a keyboard character at the end (or other position of your liking): tlFj1tp#

This is a strong base password. Now say we have three accounts: Gmail, Yahoo and Facebook, and we want to use the base password to create passwords for these accounts.

  • Let's pick the first two letters of each account, one upper and one lower case: Gm Ya Fa.
  • Now we add the three letters to the base password following a fixed pattern (say beginning and end), and we have the final passwords:
  • Gmail: GtlFj1tp#m
  • Yahoo: YtlFj1tp#a
  • Facebook: FtlFj1tp#a

If one of the passwords is compromised, it will be very difficult to guess the other two without knowing the process you used to build them. On the other hand it is fairly easy to remember the password sequence.

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.