On September 22nd, OSC switched to Slurm for job scheduling and resource management on the Pitzer Cluster, along with the deployment of the new Pitzer hardware. We are in the process of updating the example job scripts for each software. If a Slurm example is not yet available, please consult our general Slurm information page or contact OSC help.


eXpress is a streaming tool for quantifying the abundances of a set of target sequences from sampled subsequences.

Availability and Restrictions


The following versions of eXpress are available on OSC clusters:

Version Owens
1.5.1 X*
* Current default version

You can use  module spider express to view available modules for a given machine. Feel free to contact OSC Help if you need other versions for your work.


eXpress is available to all OSC users. If you have any questions, please contact OSC Help.

Publisher/Vendor/Repository and License Type

Adam Roberts and Lior Pachter, Open source


Usage on Owens


To configure your environment for use of eXpress, run the following command: module load express. The default version will be loaded. To select a particular eXpress version, use module load express/version. For example, use module load express/1.5.1 to load eXpress 1.5.1.

Further Reading

Fields of Science: