Differences

This shows you the differences between two versions of the page.

--- runnersc [2016/04/22 12:53] – [Submitting a Job] wsi
+++ runnersc [2022/07/21 06:59] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== Running Jobs at NERSC ======
+===== Logging on to NERSC =====
+  $ ssh simonw@cori.nersc.gov
+Use the home directory to store data, but don't run codes here as space is limited.
+See [[compilenersc|Compiling Codes at NERSC]]
+Use the scratch directory to compile and run codes, but don't use scratch as longterm storage.
+  $ cd $SCRATCH
+There is a long-term storage solution called HPSS: http://www.nersc.gov/users/storage-and-file-systems/hpss/
+===== Sample Batch Scripts =====
+Save a batch script as a separate file (e.g. mybatch ). Submit with
+  $ sbatch mybatch
+Before launching a multi-hour run, use a debug script to make sure you set everything up right. Only one debug run can be active at once, time-limit is 30 minutes.
+**Debug Script**
+  #!/bin/bash -l
+  #SBATCH -p debug
+  #SBATCH -N 64
+  #SBATCH -t 00:20:00
+  #SBATCH -J my_job
+  srun -n 2048 ./mycode.exe
+**Regular batch script**
+  #!/bin/bash -l
+  #SBATCH -p regular
+  #SBATCH -N 2
+  #SBATCH -t 00:30:00
+  cd $SLURM_SUBMIT_DIR   # optional, since this is the default behavior
+  srun -n 64 ./my_executable
+Use the account number m2560 (default acct) for runs.
+===== Submitting a Job =====
+  sbatch mybatch_script
+===== Checking Job Status =====
+Check your job status
+  $ sqs
+Cancel a job
+  $ scancel jobid
+Alter options for currently queued job (does not work on running jobs)
+  $ scontrol update jobid=jobid partition=new_partition timelimiit=timelimit qos=normal
+===== More Information =====
+http://www.nersc.gov/users/computational-systems/cori/running-jobs/