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Tuning Lustre/en: Difference between revisions
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[http://lustre.org/ Lustre] is a high performance distributed filesystem which allows users of Compute Canada to reach high bandwidth for input/output operations. There are however some caveats to consider if one wants to achieve the best performance. | [http://lustre.org/ Lustre] is a high performance distributed filesystem which allows users of Compute Canada to reach high bandwidth for input/output operations. There are however some caveats to consider if one wants to achieve the best performance. | ||
Note that the advice offered here is advanced users and should be used with caution. Be sure to carry out tests both to verify the scientific validity of your output and to ensure the changes led to real performance improvements. | |||
== Stripe Count and Stripe Size == | |||
== Stripe Count and Stripe Size == | |||
For each file or directory, it is possible change the stripe size and stripe count parameters. Stripe size is the size of the smallest block of data that is allocated on the filesystem. Stripe count is the number of disks on which the data are spread. | For each file or directory, it is possible change the stripe size and stripe count parameters. Stripe size is the size of the smallest block of data that is allocated on the filesystem. Stripe count is the number of disks on which the data are spread. | ||