SCHEDULE: NOV 15-20, 2015

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Parallel Programming in Modern Fortran

SESSION: Parallel Programming in Modern Fortran

EVENT TYPE: Tutorials

EVENT TAG(S): Programming Systems

TIME: 8:30AM - 5:00PM

Presenter(s):Karla Morris, Damian Rouson, Salvatore Filippone, Fernanda S. Foertter

ROOM:12B

ABSTRACT:

Fortran remains widely used in high-performance computing (HPC) [1],
but most users describe their programming skills as self-taught and
most use older language versions. The increasing compiler support for
modern Fortran makes the time ripe to teach new language features
that target HPC. We will teach single-program, multiple-data (SPMD)
programming with Fortran 2008 coarrays. We also introduce Fortran's
loop concurrency and pure procedure features and demonstrate their
use in asynchronous expression evaluation for partial differential equation (PDE) solvers. We incorporate other language features, including
object-oriented (OO) programming, when they support parallel programming pedagogy. In particular, we demonstrate OO design patterns
for hybrid CPU/GPU calculations in the Parallel Sparse Basic Linear Algebra Subroutines (PSBLAS) library. Attendees will use the
GCC 5.1.0 Fortran compiler and the OpenCoarrays library [2] to compile
parallel executables inside virtual machines. Those interested in GPU
computing will have access to Oak Ridge's Cray supercomputer Titan.

[1] Prabhu, P., et al. \A survey of the practice of computational science." State of the Practice Reports. ACM, 2011.

[2] http://www.opencoarrays.org

Chair/Presenter Details:

Karla Morris - Sandia National Laboratories

Damian Rouson - Sourcery, Inc.

Salvatore Filippone - University of Rome Tor Vergata

Fernanda S. Foertter - Oak Ridge National Laboratory

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