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A Case Study - Scaling Legacy Code on Next Generation Platforms

Quadros, William Roshan

24th International Meshing Roundtable, Elsevier Ltd., pp.Research Note, October 12-14 2015

IMR
PROCEEDINGS

24th International Meshing Roundtable
Austin, TX
October 12-14,2014

Sandia National Laboratories, Albuquerque, NM USA
Email: wrquadr@sandia.gov

Abstract
This research note discusses a case study that summarizes the procedure followed in porting a legacy code to scale on next generation platforms. Here, the legacy Laplace mesh smoothing algorithm is used on a hex mesh as a hotspot for the performance study. The case study was conducted on a testbed that has a similar hardware architecture with many integrated cores (MIC) as that of the next generation supercomputer called Trinity. The case study has shown good scaling using the hybrid MPI+X programming model.

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