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faq [2021/04/02 19:24]
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faq [2021/04/02 23:40] (current)
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| ====FAQ==== | ====FAQ==== |
| ==1. How do I view/copy my /scratch/ files during/after the job?== | ==1. How do I find my /scratch/ files during/after the job?== |
| /scratch/${SLURM_JOB_ID}/ is not really a directory but is a softlink to either /scr1/${SLURM_JOB_ID}/ for $SLURM_JOB_ID odd, or /scr2/${SLURM_JOB_ID}/ for ${SLURM_JOB_ID} even. In the future there may be more scratch drives. This makes a failure of a scratch disk affect fewer jobs. We try to make the link from scr[1-2] to scratch on compute nodes in the job and on head nodes but it may not be present. | /scratch/${SLURM_JOB_ID}/ is not really a directory but is a softlink to either /scr1/${SLURM_JOB_ID}/ for $SLURM_JOB_ID odd, or /scr2/${SLURM_JOB_ID}/ for ${SLURM_JOB_ID} even. In the future there may be more scratch drives. The separation and link of scratch partitions makes a failure of a scratch disk affect fewer jobs. We try to make the link from scr[1-2] to scratch on compute nodes in the job and on head nodes but it may not be present. |
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| /local_scratch/${SLURM_JOB_ID}/ only exists on the first compute node of the job, not on the frontend. If you need to recover or view files from it, look in the job log for the first compute node and ssh to it from the login node. | /local_scratch/${SLURM_JOB_ID}/ only exists on the first compute node of the job, not on the frontend. If you need to recover or view files from it, look in the job log for the name of the first compute node (such as c1502) and ssh to it from the login node. |
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| The lifetime of /scratch and /local_scratch jobs after the job ends is intended to be a week, but can be less if the areas begin to fill and need to be erased. About 8 hours has been the worst case so far. | The lifetime of /scratch and /local_scratch jobs after the job ends is intended to be a week, but can be less if the areas begin to fill and are erased. About 8 hours has been the worst case so far. |
