FAQ
- Account creation procedure for Non-Purdue users
- How to subscribe cms-t2-users mailing_list
- Where to get support on technical issues
- How can users write to Hadoop user space
- The grp area usage policy
- The scratch area usage policy
- SITECONF issue
- When and where to install a new CMSSW version
- Apply for membership of the CMS HyperNews
- How to see the space usage of /tmp directory and others
- Migration of user's certificate from DOEGrid to CERN CA
Account creation procedure for Non-Purdue users
Non-Purdue users who want to apply for a shell access to our
resources,
please proceed as follows:
1) Download privilege form,
and fill them out and fax them back to Norbert at (765) 494-0706.
In the form, you should fill Norbert Neumeister as your Purdue sponsor,
and be sure to ask accounts for accessing CMS user interfaces, also put
"CMS account" at the comment field.
2) If you have your account you can login to the following machine:
ssh -l username cms.rcac.purdue.edu
3) The default quota with your account is 10G, additional
storage space can be requested.
How to subscribe cms-t2-users mailing list
The benefits to subscribe cms-t2-users@lists.purdue.edu mailing
list are that local users can receive news, events and downtime
notification of Purdue CMS Tier-2 center automatically.
To subscribe the mailing list cms-t2-users@lists.purdue.edu, users shall
send email to cms-t2-users-request@lists.purdue.edu
from email box that you want to be added to the mailing list. Note
that you should put "subscribe" in the subject area and content area
only. Then, you will receive the confirmation email from mailing list
server. Be sure to follow the instruction of the confirmation email to
activate your subscription.
Where to get support on technical issues
Be sure to read this FAQ first, if you still have problems, please send
your issues to cms-support@lists.purdue.edu mailing list.
How can users
write to Hadoop user space
The correct path to the Purdue Hadoop is /store/user. Users shall use
srmmkdir to create a directory at /store/user/mydirectory, then use
srmcp to copy data. The examples of srmmkdir and srmcp are at here.
The grp area usage policy
Files at /grp/cms/users will be backed up. Note that this storage space
should be used for sharing files and codes, but should *not* be used
for large data files that will be accessed from jobs running at a
worker node.
The scratch area usage policy
If you want fast data access and transfer, please use $RCAC_SCRATCH .
The scratch area is not backed up and files older than 60
days will be cleaned up automatically.
SITECONF issue
When users run CMSSW_2_0_0 version or latest and got an error
"NO SITECONF", please inform Admin to install a link
pointing to SITECONF.
When and where to install a new CMSSW version
Admin will install a new CMSSW version only when several people are
interested in the same new CMSSW version, when a formal release will
not come out soon, and the free space is still available at
/grp/cms/purdueCMS area.
Apply for membership of the CMS Hypernews
If you do not intend to get a CERN unix account. Please send an
email to Peter Elmer at Peter.Elmer@cern.ch. They can create a
HN membership for you by hand. They take the username you prefer
and append ".nocern" to it. Then you can log in lepton.
rcac.purdue.edu, run the command:
htpasswd -n username.nocern
It will ask you (twice) for a password and then print a line with some
encrypted stuff. If you send Peter that line, he can create the HN
membership for you.
How to see the space usage of /tmp directory and others
df -h # this command can show the space usage of
all mounted directories
du -sh # this command can show the total usage of the files and
directories at your current directory
du -sh * # this command can show the usage of each
sub-directory at your current directory
Migration of user's certificate from DOEGrid to CERN CA
User needs to inform us by sending an email to
cms-support@lists.purdue.edu concerning change of their certificate
from DOEGrid to CERN CA. User would also have to provide
the output of the command 'voms-proxy-info --all' . We will map
user's new DN with old local pool account.





