1. "My jobs on Talapas are crashing immediately, what's wrong??"
By default, users are assigned one core at a time, and a chunk of memory (~4GB RAM) associated with that core. For many applications, this may not be enough memory. To get around this, one can reserve more cores:
[user@ln1 ~]$ srun -n28 --pty bash
This will reserve all 28 cores on a basic node, which should suffice for most applications. Alternatively, if you just want to reserve more memory, do:
[user@ln1 ~]$ srun --mem=50G --pty bash
This will reserve 1 core but 32GB RAM on a node. It may be useful to try reserving a full node and determine how much RAM is needed for your application, then future jobs can be adjusted accordingly.
2. "How do I view my disk usage and quota?"
You can now view your disk usage and your current quota using the "quota" command, located in /usr/local/bin. The first lines give your usage and quota, and additional lines give group usages and quotas for all the groups that you are a member of.
3. "Oops! I just accidentally deleted some of my files and directories. Can you please recover them?
You just might be in luck. Talapas does not currently have backups, but it does take regular filesystem snapshots. These are located in /gpfs/.snapshots/ and are taken at the following times:
end of each day (before midnight, Sunday through Friday): daily-{Sun-Fri}
end of each week (before midnight on Saturday): weekly-{week # of month}
beginning of each month: monthly-{Jan-Dec}
NOTE: Snapshots are currently experimental phase while other filesystem changes are in progress! We expect snapshots to be in production shortly after the reorganization of project and home directories has completed.