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2018 GTC San Jose

S8848 - Adapting Minisweep, a Proxy Application, on Heterogeneous Systems Using OpenACC Directives

Session Speakers
Session Description

Learn about how the high-level directive-based, widely popular, programming model, OpenACC can help port radiation transport scientific codes to large scale heterogeneous systems consisting of state-of-the-art accelerators such as GPUs. Architectures are rapidly evolving and the exascale machines are expected to offer billion-way concurrency. We need to rethink algorithms, languages, programming models among other components in order to increase parallelism from a programming standpoint to be able to migrate large scale applications to these massively powerful platforms. This talk will discuss programming challenges and its corresponding solutions for porting a wavefront based miniapplication for Denovo, which is a production code for nuclear reactor modeling, using OpenACC. Our OpenACC implementation running on NVIDIA's next-generation Volta GPU boasts a 85.06x speedup over serial code, which is larger than CUDA's 83.72x speedup over the same serial implementation.


Additional Information
Performance Optimization, Programming Languages, Supercomputing
Software
Intermediate technical
Talk
25 minutes
Session Schedule