Changes between Version 50 and Version 51 of cypress/using


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Timestamp:
Aug 25, 2016 2:52:12 PM (5 years ago)
Author:
fuji
Comment:

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  • cypress/using

    v50 v51  
    128128
    129129Congratulations, you are ready to begin running jobs on Cypress!
     130
     131==== Requesting memory for your job ====
     132
     133Our standard nodes on Cypress will allow you to use up to 64 GB of memory per node (3.2 GB per core requested).  This should be sufficient for many types of jobs, and you do not need to do anything if your job uses less than this amount of memory.  If your jobs require more memory to run, use the `--mem` option of sbatch to request a larger amount of memory.  For example, to request 16 GB of memory per node, put the following in your sbatch script:
     134
     135{{{
     136#SBATCH --mem=16000
     137}}}
     138
     139
     140If you need more than 64 GB of memory per node, we have a few larger memory nodes available.  To request 128 GB nodes for your job, put the following in your sbatch script:
     141
     142{{{
     143#SBATCH --mem=128000
     144}}}
     145
     146or, to request 256 GB memory nodes, use the following:
     147
     148{{{
     149#SBATCH --mem=256000
     150}}}
     151
     152We have a limited number of the larger memory nodes, so please only request a larger amount of memory if your job requires it.  You can ask SLURM for an estimate of the amount of memory used by jobs you have previously run using `sacct -j <jobid> -o maxvmsize` .  For example:
     153
     154{{{
     155$ sacct -j 2660 -o maxvmsize
     156 MaxVMSize
     157----------
     158           
     159 39172520K
     160}}}
     161
     162This shows that job 2660 allocated close to 40 GB of memory.
    130163
    131164=== MPI Jobs ===