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Prof. Albert S. Kim
University of Hawaii at Manoa, USA
Development and Benchmark of OpenMP-Accelerated SWAT Simulations Using Open-Source Compilers and Utilities
A practical method to accelerate execution of Soil and Water Assessment Tool (SWAT) was developed using open (free) computational resources. The SWAT source code (rev 622) was parallelized using OpenMP and recompiled using a non-commercial Intel FORTRAN compiler in Ubuntu Linux platform. We used GNU utilities of‘make’ to build OpenMP SWAT package, ‘gprof’ to profile memory usage, and ‘diff’ to check identicalness of parallel and serial SWAT simulations. Among 302 SWAT subroutines, The slowest routines in terms of execution were identified using gprof, and later OpenMP-parallelized in an 8-core shared memory system. In addition, we developed a C-wrapping function to rapidly set large arrays zero, which was found to be very efficient. A universal speedup ratio of 2.3 was achieved when input data sets have a large number of hydrological response units.

Albert S. Kim is an associate professor in the Department of Civil and Environmental Engineering at the University of Hawaii at Manoa. He holds a PhD and MS in Civil Engineering from the University of California, Los Angeles, a MS in Physics from Yonsei University, South Korea, and a BS in Physics from Kyung Hee University, South Korea. He has published more than 40 papers in journals indexed in the Web of Science such as Advances in Colloid and Interface Science, AIChE Journal, Chemical Engineering Science, Chemistry Letters, Computer Applications in Engineering Education, Computers and Geosciences, Desalination, Desalination and Water Treatment, Environmental Engineering Science, European Physical Journal, Industrial & Engineering Chemistry Research, Journal of Membrane Science, Journal of Colloid and Interface Science, and Transport in Porous Media. He has also published one book chapter: Chapter 1. “Bias Monte Carlo Methods in Environmental Engineering” in Applications of Monte Carlo Methods in Biology, Medicine and Other Fields of Science edited by Charles J. Mode, ISBN 978-953-307-427-6. He is on the editorial board of several journals including Computer Applications in Engineering Education, Environmental Engineering & Ecological Science, Journal of Computational Material Science, and Recent Patents on Chemical Engineering. 

He has participated in the scientific committees of several conferences and associations of the North American Membrane Society and American Chemical Society and served as a reviewer of papers submitted to a wide range of international journals and proposals submitted to US National Science Foundation (NSF) and government funding agencies of Singapore, Qatar, and South Korea. He is currently interested in membrane distillation, dissipative particle dynamics, ocean thermal energy conversion, and application of parallel computation to large-scale hydrological systems.

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