RT Conference Proceedings T1 DNA Sequences Alignment in Multi-GPUs: Energy Payoff on Speculative Executions A1 Pérez-Serrano, Jesús A1 Sandes, Edans A1 Melo, Alba A1 Ujaldon-Martínez, Manuel K1 Ácido desoxirribonucleico AB We present a performance per watt analysis of CUDAlign 4.0, a parallel strategy to obtain the optimal alignment of huge DNA se- quences in multi-GPU platforms using the exact Smith-Waterman method. Speed-up factors and energy consumption are monitored on different stages of the algorithm with the goal of identifying advantageous sce- narios to maximize acceleration and minimize power consumption. Ex- perimental results using CUDA on a set of GeForce GTX 980 GPUs illustrate their capabilities as high-performance and low-power devices, with a energy cost to be more attractive when increasing the number of GPUs. Overall, our results demonstrate a good correlation between the performance attained and the extra energy required, even in scenarios where multi-GPUs do not show great scalability. YR 2017 FD 2017-05-30 LK http://hdl.handle.net/10630/13777 UL http://hdl.handle.net/10630/13777 LA eng NO Universidad de Málaga, Campus de Excelencia Internacional Andalucía Tech DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026