ADIOS IO introduction Yufei Dec 10. System at Oak Ridge 672 OSTs 10 Petabytes of storage 60 GB/sec = 480 Gbps aggregate performance (theoretical) 225,000.

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Presentation transcript:

ADIOS IO introduction Yufei Dec 10

System at Oak Ridge 672 OSTs 10 Petabytes of storage 60 GB/sec = 480 Gbps aggregate performance (theoretical) 225,000 compute cores

Prior Work Driver-level work for disk access System-level strategies for effective buffering Alternative file organizations (striping as Lustre) Novel method data staging alternative file formats or organizations better ways to organize and update file metadata

Interference

Adaptive I/O Dynamic and proactive methods for managing IO interference shift work from heavily used areas of the storage system to those that are more lightly loaded. IO Middleware

Internal Interference Effect

External Interference Effect

Imbalanced Concurrent Writers

Adaptive IO

Components Writer Sub-Coordinator Coordinator

Experimental Evaluation MPI-IO vs Adaptive IO

FAQ