Parallel processing in rosa ii
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Parallel Processing in ROSA II. Glenn Schrader / Sara Siegal MIT Lincoln Laboratory 09/22/2009.

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Parallel processing in rosa ii

Parallel Processing in ROSA II

Glenn Schrader / Sara Siegal

MIT Lincoln Laboratory

09/22/2009

This work is sponsored by the Department of the Air Force under Air Force contract FA8721-05-C-0002. Opinions, interpretations, conclusions and recommendations are those of the author and not necessarily endorsed by the United States Government.


Typical parallel system
Typical Parallel System

Parallel Processing

Parallel Processing

Parallel Processing

Inputs

Corner Turn

Output

Corner Turn

Collect

e.g. MPI

Parallel Processing “View of the World”


Hpec within a larger system
HPEC Within A Larger System

Operator

Interfaces

System

Controller

e.g. DDS**

Sensor &

Controller

Subsystem

Interfaces

HPEC

System

External

System

Interfaces

Other

Controllers

“Traditional”

ROSA* II Distributed

System

HPEC Systems are usually a component within a larger system. The larger system tends to look more like a “distributed” system rather than a “parallel” system.

*Radar Open System Architecture

**Distributed Data Standard


Approach
Approach

  • This presentation shows results from a case where a LL developed system level middleware and another LL developed HPEC middleware were required to inter-operate

  • Distributed / parallel component interaction can be implemented via a communication bridge

  • Testing approach

    • Interaction between distributed and parallel components is a communication problem

    • Comm is typically described in terms of latency & bandwidth

    • Tests measure round-trip latency and max bandwidth

ROSA

Distributed

Component

Distributed/Parallel

Communication Bridge

PVL* Parallel

Components

*Parallel Vector Library


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