QUASIAMORE:Grant

=Grant=

Overview
Grant is part of the Institute for Soldier Nanotechnology (ISNs) computing cluster located in Tech Square. It is a 55 node cluster divided into two distinct queues: the myrinet queue (for all nodes that have myrinet cards) and the nomyrinet queue (for all nodes that do not have myrinet cards). Specifically
 * Node 1: Master Node. Common courtesy is to not run on it.
 * Nodes 2-34: Nodes on the myrinet queue
 * Nodes 2-32 have two processors
 * Nodes 33 and 34 have four processors
 * Nodes 35-53: Nodes on the nomyrinet queue
 * Nodes 54-55: Nonqueued interactive nodes for script testing.

Submitting a job directly (not to the queueing system)
Grant uses the standard LAM environment for parrallel computing so submitting a job is as
 * 1) Determining which nodes you want to use
 * 2) Creating a machine file (usually called machine) like the one below which says to use two processors of node12 and 1 processor of node13.
 * 3) Submitting the job with mpirun like this. In this case the machinefile is called "machine", the number of processors is specified as 3.

Additional Information

 * A custom usage script called gusage exists. It can be run by one of the two following commands


 * Franks and grant share the same home partition.
 * As we only have one user for the entire group (marzari)
 * Each user should make a home directory as a subdirectory of /home/marzari
 * Basic compiled versions of espresso exist /home/marzari/codes for both franks and grant.
 * Altering the environment should be done sparingly. Notification of alterations should be e-mailed to the entire group.
 * Nodes 10 and 20 are unable to run quantum-espresso for unknown reasons.

Group Contacts
The group members in charge of grant are
 * Nicolas Miller
 * Young-Su Lee
 * Michael Tambe