POE Parallel Operating Environment

Cliff Montgomery

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

What does POE do?

It's all about parallel execution

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

How do we use POE? Understand the system’s 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...

Bask in the glory of parallel computing

I Learned… The concept is beautiful, however… The devil’s in the details –Optimization –Communications

I Learned… About MPI

I Learned… Architecture’s used today –Shared vs Distributed memory

And I learned About the Acronym daemon –PET –MHPCC –IBM, POE –AIX –SMP, MPMD –YGBSM!

I also learned… Daemon There are at least 3 ways to pronounce it De-mon Day-mon Dae-mon

Our Groups Interactions?

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

My overall impressions Wonderful! Valuable! Well organized! Nice trip to MHPCC and Haleakala Great pizza!

Questions?