FAQ

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Contents

General information

How to change my password?

Navigate to https://www.scorec.rpi.edu/password and change your password. If you have forgotten your password, please email help@scorec.rpi.edu

How do I run jobs?

See the List of Computers and make sure to run anything which is compute intensive on a cluster (whether the job is parallel or not). DO NOT remotely run compute or other resource heavy jobs (compiling, etc) on lab workstations.

How do I get access to the software repository?

Most of SCOREC software development has moved to Github.

The redmine accounts are completely separate from the SCOREC accounts (although we strongly prefer it if the user names match). We advise using a different password for the SCOREC account and Redmine account.

To sign up for a Redmine account, go to https://redmine.scorec.rpi.edu/ and click on "Register" in the upper right corner of the page, then fill out the registration form.

Once that's done, admin will approve the new accounts (mostly to prevent spammers from creating junk accounts).

Where do I put my files? How do I put them there?

Every user has a traditional Unix home directory, limited by default to five gigabytes in size. This file system is visible on all non-cluster public SCOREC systems as /users and on the cluster master nodes as /import/users.

Each cluster has its own set of home directories for storing SSH keys and shell settings called /<cluster name>.

Getting files in and out of SCOREC is straightforward; the best and most secure method would be to use SCP.

SCOREC has a large network scratch space called lore available to users who request space in it. This space can be accessed on the Unix systems under /lore/<username>. Space in lore is given on an as needed basis and is NOT for long term storage.

SCOREC has a older network scratch space called fasttmp available to users who request space in it. This space can be accessed on the Unix systems under /fasttmp/<username>. Space in fasttmp is given on an as needed basis and is NOT for long term storage.


SCOREC can provide public web space to its users who need it. Email help [at] scorec.rpi.edu with your specific needs. This space appears as /net/web/public/<username> on most SCOREC systems and has a default quota of 100MB.

How do I get help?

Once you've read all the documentation on this wiki and searched the corresponding Github repo for your issue please either

  1. signup for our Slack channel (https://join.slack.com/t/scorec/signup) using your RPI email address and ask your question, or
  2. email help@scorec.rpi.edu.

Post your question on Slack first if it is about using or installing research software should be sent to Slack first. Research software can generally be defined as anything that is computationally intensive (i.e., a graph partitioner such as ParMETIS/METIS or a linear algebra such as PETSc).

Send questions to help@scorec.rpi.edu that are about desktop software (i.e., office, web browsers, etc.), infrastructure software (i.e., compilers, MPI, etc.), accessing SCOREC systems, and hardware problems.

Remote access problems

How do I remotely work on machine foo?

You need to use an SSH client software to connect first to jumpgate.scorec.rpi.edu and then to foo.

I want to use a graphical application but I get Can't open display

This usually happens if you are working remotely on a machine and you do not have an X11 server on your computer or SSH is not configured to tunnel X11. Refer to the Tunneling X11 article.

Using a VNC is a better approach for remotely running graphical applications.

Application-Specific

How can I get firefox to do something with mailto links ?

Assuming that you are satisfied with using Thunderbird handle mailto links, do the following:

  • In Firefox, load the about:config location.
  • Right-click in the page and select New->String
  • Enter the value network.protocol-handler.app.mailto and click OK
  • Enter the value /usr/local/firefox/scripts/firefox-mailto.sh and click OK
  • You are done.

How can I get Thunderbird to load URLs in a browser ?

Easy. Just do:

  • Quit Thunderbird
  • Edit ~/.thunderbird/profile_dir/prefs.js and add
user_pref("network.protocol-handler.app.http","/usr/local/thunderbird/scripts/thunderbird-url.sh");
user_pref("network.protocol-handler.app.https","/usr/local/thunderbird/scripts/thunderbird-url.sh");
user_pref("network.protocol-handler.app.ftp","/usr/local/thunderbird/scripts/thunderbird-url.sh");
  • Restart Thunderdird.

Note that profile_dir is usually of the form BunchOfLetter.default


Why does Firefox 3 not let me see certain SCOREC SSL pages?

Firefox 3 has changed the way their security mechanisms work. In an effort to improve security they now show warnings whenever you are presented with a non-trusted SSL site. This includes many SCOREC and other related sites who have had their certificates signed by other Certificate Authorities. Currently, many of SCORECs certificates are being signed by Cacert.

The easiest way to fix this and view these sites is to trust Cacert as a new certificate authority by installing their certificate in your web browser. You can simply click here, check the three boxes for 'Trust this CA to...', and click 'Ok'.

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