Elastic HPC Jobs - OFS
Example HPC jobs with CCQ and OrangeFS
Before you launch your first job, you will want to check the instance limits in the region you are running. You can check this with Resource Quotas You can increase the limits by requesting quota adjustments for the number of resources you require.
Setup to Launch a Sample Job
To setup the sample job, first ssh into the login instance and copy the sample jobs directroy to the shared file system:
$ copy -r /software/samplejobs/ /mnt/orangefs/
Edit the sample job you would like to run. Remove the extra comment (#) from the scheduler you are running. In this example the Slurm scheduler is used. Uncomment the sharedFS option you selected. Here we are using OrangeFS as an example.
Launch the job by running the ccqsub command. Check the status with ccqstat:
You can edit the file, save some other node configurations and launch them as well.
You can also run preemptible instance jobs by adding directives to the job script.
#CC -up yes (use preemptible) #CC -gcpit n1-highcpu-32 (the instance type)
When the job is in the:
- Pending state the job is waiting to be processed by CCQ
- CreatingCG state it is Creating the instances
- ExpandingCG state the job is waiting for the current Compute Group to expand and create new Compute Instances
- Provisioning state it is doing final node setup
- CCQueued state the job is in the process of being submitted to the scheduler
- Running state when it is handed off to the scheduler, which is slurm in this job.
- Completed state it has finished running successfully
- Error state the job encountered an error during execution. The error will be logged in the Administration -> Errors tab within the CloudyCluster UI.
The completed status is displayed when the job is done.
The Job Status Output is sent to the home directory or the directory the job was launched from.
When there are no more jobs for that instance type, the instances are then terminated.
Now you can pause your HPC Environment if you do not have any more jobs to run. Once everything is paused, you can also stop the control node from the GCP Console and restart it when you are ready to run jobs again.
To assist researchers, a wide variety of common open HPC tools and libraries are pre-installed and configured, ready to run and ready to scale.