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Panel Questions

General Purpose and Domain Specific Languages (GPLs and DSLs) Katherine Yelick, LBNL (moderator) Andrew Lumsdaine , Indiana University A rmando Solar- Lezama , MIT E mina Torlak , UCB John Mellor- Crummey , Rice Mike Wilde, ANL. Panel Questions.

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Panel Questions

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  1. General Purpose and Domain Specific Languages (GPLs and DSLs)Katherine Yelick, LBNL (moderator)Andrew Lumsdaine, Indiana UniversityArmando Solar-Lezama, MITEminaTorlak, UCBJohn Mellor-Crummey, RiceMike Wilde, ANL

  2. Panel Questions • Is there support for specific science domains? • Does the language support programming both within and between compute nodes? • What types of parallelism (implicit, SPMD, data, task) are supported? • What types of synchronization exist in the languages? • How is communication between tasks handled? Is it limited by task structure, type constraints, etc.? • What other novel features exist for managing energy, resilience, reproducibility, or other systems features? XStack Review

  3. Panel Questions • GPL or DSL? • Inter or Intra node? • Parallelism? (implicit, SPMD, data, task) • Synchronization? • Communication? • Features for energy, resilience, reproducibility, or other systems features? XStack Review

  4. The X-Stack Programming Model Puzzle Pieces

  5. Add your language / programming model to the gdoc https://docs.google.com/a/lbl.gov/spreadsheet/ccc?key=0AnxagJH-lElndDE5OFF3YkVqUFQtOHY3alZveGlYTFE#gid=0 XStack Review

  6. ExascaleCoordination Summary of X-Stack • Goals: • Enable DOE applications to take maximum use of future architectures ( MPI+X is part of the plan) • Broaden the base of future applications by improving programmability (may not involve MPI) • Strategy: • Narrow the possible values X and help define/refine X and MPI • Identify a small set of challenges of future systems (e.g., explicit memory management, heterogeneity, memory bw, coherence) and evaluated possible solutions XStack Review

  7. GPL / DSL MarketPlace • Building Solver-Aided DSLs with Rosette (EminaTorlak, UCB) • Rosette isa new framework for rapid design and prototyping of solver-aided DSLs. • SPI: the eXascaleParalleX Intermediate form (Andrew Lumsdaine, Indiana University) • The XPRESS team will discuss the eXascaleParalleX Intermediate form (XPI), a low-level API to HPX functionality that can be directly called as a library or used as a compiler target.   • Sketch: a system for program synthesis (Armando Solar-Lezama, MIT) • The Sketch system uses a • Swift: a parallel scripting language (Michael Wilde, Argonne) • The Swift scripting language, a portable parallel language for composing parallel applications. XStack Review

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