Frequency scaling and energy efficiency regarding the Gauss‐Jordan elimination scheme with application to the matrix‐sign‐function on OpenPOWER 8
Martin Köhler, Jens Saak · Concurrency and Computation Practice and Experience · 2018
Summary The Gauss‐Jordan Elimination scheme is an alternative to the LU decomposition for solving linear systems or computing the inverse of a matrix. We develop a multi‐GPU aware implementation of this algorithm on an OpenPOWER 8 system with application to the Matrix Sign Function. Thereby, we analyze the influence of the CPU clock frequency scaling on the overall energy consumption. The results show possible energy saving of 14.2% without a noteworthy increase of the runtime.