Presented by

Logistical networking for energy sciences

Micah BeckComputer Science and Mathematics

Computing and Computational Sciences Directorate

Logistical Computing and Internetworking (LoCI) Lab Computer Science Department

University of Tennessee

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The Internet backplane protocol (IBP) IBP is a common service for state

management in a shared network

It is a basis for asynchronous communication

Scalability comes from weak assumptions: Maximum size and duration of allocation A highly generic, “best effort” service “A weak network version of malloc”

Robust services are built on top in an end-to-end manner !

The goal is scalability analogous to the Internet

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Internet backplane protocol

NaNa

Allocate!

Capability

Depot

NwNw

Store!

DepotData

NrNr

Load!

Depot

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Internet backplane protocol

NaNa

Copy!Capability

Depot

Depot

NrNr

Compute!

Depot

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Apphost

LoDN/L-Store

Three kinds of files Files stored locally (1)

Attached disk (direct, LAN or storage network)

Files represented as exNodes exNodes stored locally (2) exNodes stored in LoDN directory (3)

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One infrastructure serves all

LN provides a “bits are bits” infrastructure

Standardize on what we have an adequate common model for: Storage/buffer management Coarse-grained data transfer

Leave everything else to higher layers End-to-end services: checksums,

encryption, error encoding, etc.

Enable autonomy in wide area service creation: security, resource allocation, QoS guarantees…

Gain the benefits of interoperability today

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EwokclusterEwok

cluster

Fusion: Content distribution

Depots

JaguarCray XT3Jaguar

Cray XT3

NYU

PPPL

UCI

MIT

Portals

Directoryserver

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NYU

PPPL

UCI

MIT

end user

Fusion: Location Independent I/0

Retrievemetadata

Retrieve data from best-performing depots

Directoryserver

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2.

1.

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SRM-Interoperability

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Contact

Micah BeckLogistical Computing and Internetworking (LoCI) Lab Computer Science Department University of Tennessee(865) 241-2650mbeck@ornl.gov

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