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PTP/meetings/February 2006

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February 2006 Meeting

Date: February 16, 2006 Time: 1:00 PM EST

Call in information:

Toll Free: 1 888 637-3783
Local: (505) 665-5452

Agenda

  1. PTP status 1.0 release plans
    • new member of the LANL team
    • release status
    • testing 1.0 RC3
  2. Debugger update
    • new features
    • scalability testing
  3. EclipseCon plans
    • BOF
    • CDT conference
  4. MPI and OpenMP development tools
    • update from IBM
  5. CoG & Eclipse
  6. Other business

Meeting Notes

Date: Febrauary 14, 2006 Time: 1:00 PM EST

Attendees

  • Rod Mach, Absoft
  • Beth Tibbitts, IBM
  • Bill Chung, IBM
  • Don Pazel, IBM
  • Wyatt Spear, University of Oregon
  • Greg Watson, LANL
  • Nathan Debardeleben, LANL
  • Craig Rasmussen, LANL
  • Gregor von Laszewski, Argonne National Lab

FDT Status

Craig reports the FDT release is fairly static since December. Integration with Photran has caused some problems. Currently the FDT is more stable than Photran. Craig has added a refactoring action, of refactoring reals to double precision.

PTP Team Status

Nathan is only 1/2 time on PTP now.

New PTP team member: Randy Roberts from LANL, also 1/2 time. Randy will focus on Job Scheduling systems, and remote systems.

Will need testers soon for binary build. Beth and Wyatt volunteered for Linux testing.

EclipseCon

EclipseCon is March 20-23, 2006 in Santa Clara, CA.

  • Greg's PTP "long talk" entitled Parallel Application Development With Eclipse is Tuesday at 3:15.
  • [Addendum Feb. 27] A Demo entitled Parallel Tools Platform Demo has also been accepted and will presented by Beth Tibbitts - Wednesday at 2:00 pm (with a little help from her friends). Nathan had suggested a portable bproc cluster would be good for this?
  • A BOF (Birds of a Feather) session will be scheduled one evening. Date/Time to be determined.
  • CDT Conference is scheduled for Friday March 24. Univ. Houston - CDT changes - Craig/Greg

MPI and OpenMP Development Tools

Beth Tibbitts from IBM reported that the OpenMP tools are almost done to the level of the MPI tools (finding artifacts, help, content assist, hover help, etc.). Also some beginnings of static analysis in finding regions applicable to #pragma scope.

Commodity Grid (CoG)

Gregor von Laszewski from ANL gave a presentation on the possible integration of the Commodity Grid (CoG) Kit with Eclipse PTP.

Parallel Debugger

Debugger features being worked onover the next year include:

  1. Missing CDT functionality - conditional breakpoints, hit counts, signals, memory view, etc.
  2. Parallel Visualization - e.g. view variables from a range of processes. Viewing specific data structions, such as arrays, better.
  3. MPI-specific debugging: debugger needs knowledge of messages, communicators, etc.

Debugger Scalability:

  1. Baseline study: how scalable is it now? Greg has 256-node cluster, 4 proc per node = 1024 processors. Expects o(n) scaling - confirmed. Startup was 15 sec.; debug operations were 7 sec per operation. This is comparable to TotalView for 1K processes.
  2. Plans: (a) take advantage of MPI collectives e.g. broadcast communication, to control debug processes more effiently. (b) add a process hierarchy so don't need to scan across all processes. Want to scale to 10K+ processes.

Current PTP Release

Builds should be ready this week; Release should be shortly after that.

Target pre-reqs:

  • Java 1.4
  • CDT 3.0.x
  • Eclipse 3.1

TAU plug-in

TAU (Tuning and Analysis Utilities) plug-in should be available soon.

Next meeting

The next meeting will be held on March 14, 2006