LOSF · Lots Of Small Files
A workload pattern of huge numbers of tiny files that stresses storage metadata far more than raw bandwidth.
Current numbers
~2.75M vs ~520kmetadata IOPS: Weka vs a comparable DDN/Lustre config in IO500 measurement — the LOSF gap behind the same bandwidth
<50% → >90%GPU utilization: naive small-file path vs packed sequential shards + fed loader (the LOSF penalty)