Central

Getting access

Email [email protected] or open a ticket with IMSS and request access.

Setting up

SSH config

Add to your local ~/.ssh/config file

Host hpc
  HostName login.hpc.caltech.edu
  User [username]

Now, running ssh hpc will connect you to a login node on Central. You can use a login node to access files, set up software, or do other lightweight tasks, but they should not be used for any computation. For that, you need to request a compute node, which you can do by running the following (or something similar):

srun --pty -t 01:00:00 -p expansion bash

About the machine

Software

We have set up a common environment. You can load this by

module load climacommon

See the ClimaModules documentation for more information.

clima reservation

We currently have a reservation of one GPU node on the central cluster, which is set to expire in October 2027. Here are more specifics about the reservation:

ReservationName=clima StartTime=2020-10-22T15:48:15 EndTime=2027-10-22T00:00:00 Duration=2555-08:11:45
Nodes=hpc-25-24 NodeCnt=1 CoreCnt=28 Features=(null) PartitionName=(null) Flags=FLEX,IGNORE_JOBS,SPEC_NODES
TRES=cpu=28
Users=(null) Groups=(null) Accounts=esm Licenses=(null) State=ACTIVE BurstBuffer=(null) Watts=n/a
MaxStartDelay=(null)

Resources

• Guide on using slurm with Central