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Hello Discovery users,



This is a reminder that the Discovery cluster will be undergoing regularly scheduled monthly maintenance on Monday, June 1 from 8a.m. to 5p.m. The cluster will be unavailable for jobs during this time. Also, access to /scratch on the General Parallel File System (GPFS) will be impacted for up to two days while it is being upgraded. This will not affect your /home directory or any other storage system, such as /work, if you have a directory on that system.



Use the ( t2sd ) script with the --time option with your jobs to ensure that they account for the shutdown period. The --time option will override any time parameters you have in your sbatch script with the time remaining before the cluster is unavailable.



For example:

 srun --time=$( t2sd ) <your usual srun options>

 sbatch --time=$( t2sd ) script.sbatch



NOTE: If you usually run your jobs on a partition with short time limits, such as debug or express, you don’t need to add the ( t2sd ) option until it is closer to the start of the maintenance window. You only need to use ( t2sd ) if the time left before the start of the maintenance period is less than the default time of the partition. For example, the default time of the express partition is 60 minutes. If you wanted to run a job on the express partition at 5 a.m. on June 1, you would not need to add the ( t2sd ) option. However, if you wanted to run a job at 7:30 a.m. on June 1 on the express partition, you would need to use the ( t2sd ) option.



If you have any questions or issues, please contact us at [log in to unmask], visit our website rc.northeastern.edu, or view our documentation at rc-docs.northeastern.edu.



The Research Computing Team


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