External:Annual Reports

Issues for next (Dec. 4) WebEx meeting:

Agenda:

I. Introduce Dr. A. Kot (NCSA/UIUC)

  -- Multi-layered Runtime System (Brief overview of RTS)
  

II. Input (use .tri format, FUN3D) to expose advantages of proposed approach and calibrate current vision

  -- Address short to medium term needs of NASA/LaRC, identify issues to calibrate current vision presented in the proposal
  -- Expose potential advantages of AFLR3 and MOESS, issues to be addressed in the future

  -- What is that we can do with FUND3D when it comes to managing geometries?

III. Parallel Mesh Generation

  -- PDR: targets cores in a single node (Year 2) nodes within a single rack (Year 3)
   -- Issues: 
        Pros:required minimum (but non trivial) interaction between software pieces & groups
                 multiplier for speculative approach for cores within a single chip (initially node). 
        Cons: Scalability (small) due to local synchronization, startup overhead
           -- Use input geometries to identify I/O overheads due to geometry, use this is the mac budget to jump-start PDR
        Programming Paradigm: OpenMP (need modifications)
        Define an API between PDR and AFLR3

-- Optimistic fine-grain parallelization: targets cores within a single chip, shared memory

         A. direct use of a fully functional AFLR3 (new re-organized code)
         B. indirect use of parallel Delaunay-based PODM approach in the parametric space
         C. investigate building from scratch new parallel implementation from a simpler AFT-code and build functionality as we go
         D. evaluate a bottom up approach starting from parallel triangulation, etc..   (Juliette) 
       Programming Paradigm: C++ with concurrency constructs, potential extensions of paradigm used in JLAB's QCD example-approach (challenging)
                                              See JIT in Resources. 

-- Constrained Parallel Mesh generation: targets racks or super-nodes

        Issues:
        Cons: asynchronous
        Pros: not straight forward generalization of 2D (split of a face is not unique)
    

Remaining Internal (ODU/MIT/MSU) Issues:

    i)  Interaction between MOESS and AFLR3 i.e., API (sequential code can be used as is at this point)
    ii  Interaction between PDR and AFLR3 (API is the goal, a closer look of the AFLR3 code at ODU 
        will help to   build an optimal API) and study separation of concerns between PDR and AFLR3     
    iii) Study overheads for pre-processing (Geometry, AFLR3 might require).
    iv) Set milestones and deliverables for semi-annual report
    v) Software License and potential IP issues.