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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:2.0
BEGIN:VEVENT
DTSTART:20151117T231500Z
DTEND:20151118T010000Z
LOCATION:Level 4 - Lobby
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: An efficient implementation of complex stencil programs requires data-locality transformations such as loop tiling and loop fusion.  When applying these transformations we face two main challenges: 1) the direct application is costly and typically results in code that is optimized for a specific target architecture and 2) the selection of good transformations is not straightforward.  We address these challenges using STELLA a stencil library that abstracts data-locality transformations and MODESTO a model-driven stencil optimization framework.  In particular, MODESTO represents different stencil program implementation variants using a stencil algebra and selects good transformations based on a compile-time performance model.  We evaluate the effectiveness of the approach using example kernels from the COSMO atmospheric model.  Compared to naive and expert-tuned variants we attain a 2.0-3.1x and a 1.0-1.8x speedup respectively.
SUMMARY:Integrating STELLA & MODESTO: Definition and Optimization of Complex Stencil Programs
PRIORITY:3
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