POE

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POE

• Parallel Operating Environment

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Cliff Montgomery
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What is POE?

• POE is a collection of software tools
• Facilities to manage parallel execution
• Message Passing Interface
• Parallel Compiler Scripts
• X-Windows parallel run time analysis tools
• Parallel file copy utilities
• Parallel debuggers
• A Visualization tool, and more

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What does POE do?
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It's all about parallel execution
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What does POE do?

• Links libraries during compilation
• Finds and acquires nodes for your job
• Loads your executable onto each node
• Handles intertask communications
• Manages the use of resources
• Retrieves status info when requested
• Detects and reports errors

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How do we use POE?

• Understand the systems configuration
• Get authorized (AIX or DFS/DCE)
• Compile and link using scripts
• Set up your execution environment
• Start any run time analysis tools
• Invoke the executable,
• Then...

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Bask in the glory of parallel computing
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I Learned

• The concept is beautiful, however
• The devils in the details
• Optimization
• Communications

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I Learned

• About MPI

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I Learned

• Architectures used today
• Shared vs Distributed memory

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And I learned

• About the Acronym daemon
• PET
• MHPCC
• IBM, POE
• AIX
• SMP, MPMD
• YGBSM!

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I also learned

• Daemon
• There are at least 3 ways to pronounce it
• De-mon
• Day-mon
• Dae-mon

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Our Groups Interactions?
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Value of this segment

• Overview of a working environment
• Intro to MPI
• A first look at code for parallel processing
• Our first MP program!

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My overall impressions

• Wonderful!
• Valuable!
• Well organized!
• Nice trip to MHPCC and Haleakala
• Great pizza!

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Questions?