HLRN NHR is operating at each site 3 central storage systems with their global file systems:
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The Lustre based work filesystem /scratch is the main work filesystem for the HLRN clusterssystems. Each user can distribute data to different directories.
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A general recommendation for network filesystems is to keep the number of metadata operations for open and closing files, as well as checks for file existence or changes as low as possible. These operations often become a bottleneck for the IO of your job and on large clusters , as the ones operated by HLRN, can can easily overload the file servers.
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