Lonestar6 Directories

Diagram of Lonestar6 directories and what connects to what, and how fast

Lonestar6 is a collection of 560 computers connected to three file servers, each with unique characteristics.

You need to understand the file servers to know how to use them.

	$HOME	$WORK	$SCRATCH
Purged?	No	No	Files can be purged if not accessed for 10 days.
Backed Up?	Yes	No	No
Capacity	5GB	1TB	Basically infinite. 8.5 PB
Command to Access	cdh cd $HOME	cdw cd $WORK	cds cd $SCRATCH
Purpose	Store Executables	Store Files	Run Jobs

Executables that aren't available on TACC through the "module" command should be stored in $HOME.

If you plan to be using a set of files frequently or would like to save the results of a job, they should be stored in $WORK.

If you're going to run a job, it's a good idea to keep your input files in a directory in $WORK and copy them to a directory in $SCRATCH where you plan to run your job.

This example command might help a bit:

 cp $WORK/my_fastq_data/*fastq $SCRATCH/my_project/

Now let's go on to look at how jobs are run on Lonestar6.