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High Performance Fortran And Possible Extensions To Support Conjugate Gradient Algorithms, K. Dincer, Ken Hawick, Alok Choudhary, Geoffrey C. Fox
High Performance Fortran And Possible Extensions To Support Conjugate Gradient Algorithms, K. Dincer, Ken Hawick, Alok Choudhary, Geoffrey C. Fox
Northeast Parallel Architecture Center
We evaluate the High-Performance Fortran (HPF) language for the compact expression and efficient implementation of conjugate gradient iterative matrix-solvers on High Performance Computing and Communications(HPCC) platforms. We discuss the use of intrinsic functions, data distribution directives and explicitly parallel constructs to optimize performance by minimizing communications requirements in a portable manner. We focus on implementations using the existing HPF definitions but also discuss issues arising that may influence a revised definition for HPF-2. Some of the codes discussed are available on the World Wide Web at http://www.npac.syr.edu/hpfa/ alongwith other educational and discussion material related to applications in HPF.