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Given by Geoffrey C. Fox at ARPA Environments PI Meeting Washington on June 9-10 97. Foils prepared 27 June 97
Outside Index
Summary of Material
| This describes overall goals of PCRC and |
| Statement of Problem, approach, Results, Collaboration with China |
| WebFlow PCRC Integration |
| HPF Front End and Tester |
| The Runtime Infrastructure |
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Parallel Compiler Runtime Consortium
Parallel Compiler Runtime Consortium
Common Runtime Support for High Performance Languages
Statement of Problem and Proposed Solution!
Innovations in Project
Technology Impact
Future Activities
International Collaboration
WebFlow Integration
WebFlow and PCRC
General Web Integration Model
Common Runtime Support for High Performance Languages-1
Common Runtime Support for High Performance Languages-2
PCRC HPC Infrastructure
HPFfe: Front-end for HPF
HPFtester-1
HPFtester-2
PCRC Runtime: MPI-Based
WebFlow Software Integration Model
Integrated Compiled and Interpreted Environment
Integration of Classic HPCC with DoD Modeling and Simulation
Outside Index
Summary of Material
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| Presentation on June 10 1997 by Geoffrey Fox at DARPA Systems Environments PI Meeting |
| gcf@npac.syr.edu Phone 3154432163 |
| http://www.npac.syr.edu/users/gcf/pcrcjune97 (this talk) |
| http://www.npac.syr.edu/projects/pcrc |
| http://www.npac.syr.edu/projects/javaforcse (resource for Java in Computational Science and Engineering) |
| http://www.npac.syr.edu/users/gcf/PCRCWebFlow/script.html (demonstration available in videotape) |
| Parallel Compiler Runtime Consortium |
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| University of Texas |
| Austin |
| Cooperating |
| Systems |
| Corporation |
| Indiana University |
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| CRS for Irregular Distributed Arrays (Maryland) |
| Rice |
| Syracuse |
| CSC |
| Indiana |
| HPF Compilers |
| HPC++ Compilers |
| Retargeting Existing Compilers |
| Developing New Compilers |
| Harvard |
| Other Compilers |
| Common computational functions (SU) |
| Common data movement routines (SU) |
| CRS for Regular Distributed Arrays (Syracuse) |
| Common Runtime System Interface (Indiana) |
| Common code and data descriptors for arrays in HPC languages |
| Common compiler data movement interface specifications |
| Other |
| CRS Inter-operability |
| with other RTS |
| (Maryland/ |
| Indiana) |
| Address translation mechanisms (UoM) |
| Common data movement deriving and optimizing routines (IU) |
| Rochester |
| Texas (DAGH) |
| http://www.npac.syr.edu/ |
| Other |
| Rochester |
| Future Compilers |
| HPJava |
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| http://www.npac.syr.edu/projects/pcrc/ |
| Problem: Compilers and other major HPCC software systems involve so much software that it is hard for typical academic groups to contribute deployable systems |
| Solution(Significance of Project): Enable Production of high quality and high functionality HPCC programming environments by developing public domain documented software infrastructure for HPF, and parallel C++ and Java in compiled or SPMD mode |
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Community Driven Investigation of sequential and parallel Java as a scientific and engineering programming language
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| New algorithms and high performance implementations for combine, scatter runtime |
| High level SPMD Programming Model above MPI |
| New approaches to integrating HPF, C++, Java in interpreted and compiled modes using Web technology |
| New ways of detecting optimal collective communication needed by HPF statements |
| Compiler front end test suite |
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Over 100,000 lines of C/C++ public domain software directly produced by project and divided between
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| Test suites for HPF Compiler front-end and for its implementation (set of base HPF codes) |
| Integration with DAGH, HPC++ and metachaos (most of this funded outside PCRC) |
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| Several approaches to "HPJava" on both distributed and shared memory architectures |
| Integration of Interpreters and Compilers using PCRC infrastructure (see example) |
| Other compilers (such as shpf in Europe) use infrastructure |
| WebFlow with graphical interface for integration of multi-language and multi-function modules (see example) |
| Bridge to simulation community (HLA and DIS) using common object(CORBA) web server technology |
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| Significant part of public domain software has been produced by Xiaoming Li's collaborators in computer science departments at Harbin Institute of Technology and Peking University |
In exchange NPAC has taught computational science courses in workshops in China and with Internet course to Harbin
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| http://www.npac.syr.edu/projects/pcrc/cpswt/index.htm |
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| WebFlow gives an AVS like Interface to integrate multilanguage modules |
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| A C++ PCRC SPMD Physics simulation is linked with disparate modules to filter output display |
| This demo is available on a video tape and with RealAudio narration |
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| This model can be combined with emerging Web Collaboration, Object broker and database capabilities to support multidisciplinary applications and computational steering |
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Distributed Array Descriptor Specification
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Common Runtime Interface Specification
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Multi-Runtime Library Interoperability Specification
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Advanced Compiler Development
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| HPFfe: A front-end for HPF 1.0 |
| HPFtester: a comprehensive test-suite for HPF frontend validation |
| HPFrt: an MPI-based runtime system for HPF compilers |
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| Full HPF 1.0 syntax support (including full Fortran 90) |
| Four modules: syntax parsing, semantics checking, IR rendering, and unparsing |
| Extensive semantics checking |
| Validated by HPFtester |
| Releasable to Public Domain |
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Simple test segment:
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Comprehensive test segment:
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Invalidation test segment:
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HPFtester Augmentation segments:
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Regular (based on Syracuse Fortran 90D runtime)
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Irregular (based on Maryland Chaos)
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| Could Evolve to general component based HPCC visual programming environment |
| Natural Technology for Collaborative Computing and Multidisciplinary Applications |
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| Uses a Java Front End and shows how data parallel Java could be implemented as with HPF back-ends |
| One can invoke general client side (visualization) or server side (additional simulations) at HPF Extrinsic Interfaces |
| Uses PCRC HPF Front End |
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| The Emerging object Web offers opportunity to integrate time stepped and event driven methodologies |