June 22–26, 2014
Leipzig, Germany

Presentation Details

Name: A Type Oriented Graph500 Benchmark
Time: Wednesday, June 25, 2014
09:30 am - 09:45 am
Room:   Hall 3
CCL - Congress Center Leipzig
Breaks:07:30 am - 10:00 am Welcome Coffee
Speaker:   Nick Brown, EPCC
Abstract:   Data intensive workloads have become a popular use of HPC in recent years and the question of how data scientists, who might not be HPC experts, can e ectively program these machines is important to address. Whilst using models such as Partitioned Global Address Space (PGAS) is attractive from a simplicity point of view, the abstractions that these impose upon the programmer can impact performance. We propose an approach, type oriented programming, where all aspects of parallelism are encoded via types and the type system which allows for the programmer to write simple PGAS data intensive HPC codes and then, if they so wish, tune the fundamental aspects by modifying type information. This paper considers the suitability of using type oriented programming, with the PGAS memory model, in data intensive workloads. We compare a type oriented implementation of the Graph500 benchmark against MPI reference implementations both in terms of programmability and performance, and evaluate how orienting their parallel codes around types can assist in the data intensive HPC field.

Nick Brown, EPCC, Edinburgh University