<span class="var-sub_title">Doing Moore with Less – Leapfrogging Moore’s Law with Inexactness for Supercomputing</span> SC18 Proceedings

The International Conference for High Performance Computing, Networking, Storage, and Analysis

The 3rd International Workshop on Post-Moore Era Supercomputing (PMES)


Doing Moore with Less – Leapfrogging Moore’s Law with Inexactness for Supercomputing

Abstract: We investigate the use of inexactness, to trade solution quality with energy savings to reduce power consumption in HPC systems, using commercial off-the-shelf processors for lower-precision arithmetic. We implement an inexact Newton algorithm for solving nonlinear equations to show how to reinvest energy savings to improve solution quality. We provide an analytical model to explain our findings, and provide a justification for using nonstandard half-precision arithmetic for ill-conditioned problems.

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