Wed 15 Jun 2016 15:30 - 16:00 at Grand Ballroom San Rafael - Parsing & Compilation Chair(s): Michelle Strout

Efficient memory allocation is crucial for data-intensive applications as a smaller memory footprint ensures better cache performance and allows one to run a larger problem size given a fixed amount of main memory. In this paper, we describe a new automatic storage optimization technique to minimize the dimensionality and storage requirements of arrays used in sequences of loop nests with a pre-determined schedule. We formulate the problem of intra-array storage optimization as one of finding the right storage partitioning hyperplanes: each storage partition corresponds to a single storage location. Our heuristic is driven by a dual objective function that minimizes both, the dimensionality of the mapping and the extents along those dimensions. The technique is dimension optimal for most codes encountered in practice. The storage requirements of the mappings obtained also are asymptotically better than those obtained by any existing schedule-dependent technique. Storage reduction factors and other results we report from an implementation of our technique demonstrate its effectiveness on several real-world examples drawn from the domains of image processing, stencil computations, high-performance computing, and the class of tiled codes in general.

Wed 15 Jun
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15:30 - 17:00: Research Papers - Parsing & Compilation at Grand Ballroom San Rafael
Chair(s): Michelle StroutThe University of Arizona
pldi-2016-papers15:30 - 16:00
Somashekaracharya G BhaskaracharyaIndian Institute of Science and National Instruments, Uday BondhugulaIndian Institute of Science, Albert CohenINRIA
Media Attached
pldi-2016-papers16:00 - 16:30
Tobias GrosserETH Zurich, Switzerland, Sven Verdoolaege, Albert CohenINRIA
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pldi-2016-papers16:30 - 17:00
Michael D. AdamsUniversity of Utah, Celeste HollenbeckUniversity of Utah, Matthew MightUniversity of Utah, USA
Pre-print Media Attached