Child pages
  • Hyak mox Overview
Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 21 Next »

High Level Differences from ikt

  1. You only get what you ask for, regardless of the resources available on the node. If you ask for 1 CPU, you'll only get one. If you ask for 1GB of RAM, you'll only get 1GB.
  2. An allocation won't get the same set of nodes all the time, just access to the particular number of nodes to which they're entitled.
  3. No occasional preemption in ckpt (formerly bf queue) for the moment.
  4. Preempted jobs get 30s to do something smart before being killed and requeued.
  5. Mox isn't monitored yet. Please report any problems to with Hyak as the first word in the subject.




File Transfers

Internal to Hyak systems

You can copy files at high speed without a password between the Hyak systems using commands like the ones below.

From ikt to mox

ikt1$ hyakbbcp myfile
ikt1$ hyakbbcp -r mydirectory

From mox to ikt

mox1$ hyakbbcp myfile
mox1$ hyakbbcp -r mydirectory

Slurm Primer

Show Queue

All Jobs
Jobs in Allocation
squeue -p <my short group>
All Jobs in ckpt (was bf)
squeue -p ckpt
Jobs in ckpt from Allocation
squeue -A <my short group>-ckpt


Own Allocation

sbatch -p <my short group> -A <my short group>

Checkpoint Allocation (formerly bf queue)

sbatch -p ckpt -A <my short group>-ckpt

Interactive Session

Build Allocation

srun -p build --pty /bin/bash

Own Allocation

srun -p <my short group name> --pty /bin/bash

See Node Counts per Allocation

sacctmgr show qos format=name,grptres

Show Job Info

scontrol show job <jobid>

Show Node Info

scontrol show node <node>

Sample Job Script

Change items that are bold and red.

## Job Name
#SBATCH --job-name=test-job
## Resources
## Nodes
#SBATCH --nodes=2   
## Walltime (ten minutes)
#SBATCH --time=10:00
## Memory per node

#SBATCH --mem=2G
## Specify the working directory for this job
#SBATCH --workdir=/gscratch/MYGROUP/MYUSER/MYRUN

module load icc_<version>-impi_<VERSION>

  • No labels