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cluster:100 [2011/03/28 10:16]
hmeij
cluster:100 [2011/03/28 10:21]
hmeij
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   * Reason for quotas: to avoid /home from filling up by a runaway process, and constrain large users from growing beyond arbitrary thresholds.   * Reason for quotas: to avoid /home from filling up by a runaway process, and constrain large users from growing beyond arbitrary thresholds.
  
-The quotas fall into two tiers: the sliding tier and the custom tier.  ​+The quotas fall into two tiers: the "sliding" ​tier and the "custom" ​tier.  ​
  
-  * In the sliding tier, when you reach your soft limit, notify HPC admins and your quota will slide to the next strata (< 90/100G, < 225/250G, < 450/500G, < 700/750G). Once you reach the last strata, and you still need more disk space, you enter the custom tier.   +  * In the sliding tier, when you reach your soft limit, notify HPC admins and your quota will slide to the next strata (< 90/100G, < 225/250G, < 450/500G). Once you exceed ​the last strata, and you still need more disk space, you enter the custom tier.   
-  * In the custom tier, we set a quota after agreeing on size and availability of disk space, plus 100G.  Then you are on your own. +  * In the custom tier, we discuss setting ​a quota after agreeing on size and availability of disk space, plus 100G.  Then you are on your own. (Users that currently fall into this group have been grandfathered in and notified).
  
 We urge all users to consider archiving data and files off the cluster disk array. We urge all users to consider archiving data and files off the cluster disk array.
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   * The hard block limit is the absolute maximum amount of disk space that a user can use. Once this limit is reached, no additional disk space can be used. Writes to disks will fail.   * The hard block limit is the absolute maximum amount of disk space that a user can use. Once this limit is reached, no additional disk space can be used. Writes to disks will fail.
-  * The soft block limit defines the maximum amount of disk space that can be used. Unlike the hard limit, the soft limit can be exceeded for a certain amount of time. That time is known as the grace period. ​+  * The soft block limit defines the maximum amount of disk space that can be used. Unlike the hard limit, the soft limit can be exceeded for a certain amount of time. That time is known as the grace period. Warnings will appear in your terminal/​shell
   * The grace period is globally set for 7 days.    * The grace period is globally set for 7 days. 
 +  * We do not enforce inode limits.
  
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cluster/100.txt · Last modified: 2011/03/28 10:23 by hmeij