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Evaluation of Agent Teamwork A High Performance Distributed Computing Middleware

Evaluation of Agent Teamwork A High Performance Distributed Computing Middleware. Solomon Lane Agent Teamwork Research Assistant October 2006 – March 2007. What is Agent Teamwork?. HPDC Middleware Job Dispatch & Termination Programming Framework Under Ongoing Development.

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Evaluation of Agent Teamwork A High Performance Distributed Computing Middleware

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  1. Evaluation of Agent TeamworkA High Performance Distributed Computing Middleware Solomon Lane Agent Teamwork Research Assistant October 2006 – March 2007

  2. What is Agent Teamwork? • HPDC Middleware • Job Dispatch & Termination • Programming Framework • Under Ongoing Development

  3. Project Objectives • Evaluate Agent Teamwork’s performance against a contemporary alternative • Job Dispatch & Termination Performance • Framework Performance • Build a Reference Platform • Write 3 benchmark programs that exercise the framework

  4. Job Dispatch & Termination Performance Evaluation • Globus Based Reference Platform • Globus Toolkit • OpenPBS scheduler • MPICH-G2

  5. Reference Platform Hardware

  6. Reference Platform Overview

  7. Reference Platform Challenges • Administrator Access to Machines • Host Config & Cryptic Error Messages • DNS vs hosts files • Inconsistent hosts files • Inconsistent ptr records • Inconsistent port acls • : globus_init: failed • GTK Authentication

  8. Debugging • Strace • TcpDump • GDB

  9. Job Dispatching and Termination Function Evaluation • Not evaluating the job execution performance • Methodology • Ported available test program to the MPICH-G2 framework • measure how long it takes a job submission to be deployed, executed and cleaned up • Run with 2-64 nodes across the two clusters in a depth-first node distribution series and a breadth-first node distribution series

  10. Results

  11. Results

  12. Results

  13. Framework Function Evaluation • Framework Issues • Agent Teamwork MPI implementation • MPICH-G2 C++ • MPIJava • MPI Framework • Communication functions • Initialization, Barrier, Broadcast, Gather, Scatter, etc. • Goal to write 3 benchmark programs that have communication intensive algorithms.

  14. Benchmark Programs • MD - a molecular dynamics simulation • Wave2D - a wave dissemination simulation • Mandelbrot - a Mandelbrot generator • Code each program twice

  15. Agent Teamwork Programming • Snapshots • Programming model • func_n int func_0 (String[] Args){ … return 1; } int func_1 () { … } • Code Maturity

  16. Partial Results

  17. Partial Results

  18. Future Work • Framework debugging • Develop a pre-processor to convert conventionally programmed code into the snapshot-able func_n model

  19. Skills Developed During Project • Significant experience with globus, openPBS and the mpi • Extensive debugging with tcpdump, strace, and gdb • experience with performance analysis and writing MPI programs • new insights and understanding of HPDC

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