TY - JOUR
T1 - Distributed memory parallel groundwater modeling for the Netherlands Hydrological Instrument
AU - Verkaik, J.
AU - Hughes, J.D.
AU - van Walsum, P.E.V.
AU - Oude Essink, G. H. P.
AU - Lin, H.X.
AU - Bierkens, M.F.P.
PY - 2021
Y1 - 2021
N2 - Worldwide, billions of people rely on fresh groundwater reserves for their domestic, agricultural and industrial water use. Extreme droughts and excessive groundwater pumping put pressure on water authorities in maintaining sustainable water usage. High-resolution integrated models are valuable assets in supporting them. The Netherlands Hydrological Instrument (NHI) provides the Dutch water authorities with open source modeling software and data. However, NHI integrated groundwater models often require long run times and large memory usage, therefore strongly limiting their application. As a solution, we present a distributed memory parallelization, focusing on the National Hydrological Model. Depending on the level of integration, we show that significant speedups can be obtained up to two orders of magnitude. As far as we know, this is the first reported integrated groundwater parallelization of an operational hydrological model used for national-scale integrated water management and policy making. The parallel model code and data are freely available.
AB - Worldwide, billions of people rely on fresh groundwater reserves for their domestic, agricultural and industrial water use. Extreme droughts and excessive groundwater pumping put pressure on water authorities in maintaining sustainable water usage. High-resolution integrated models are valuable assets in supporting them. The Netherlands Hydrological Instrument (NHI) provides the Dutch water authorities with open source modeling software and data. However, NHI integrated groundwater models often require long run times and large memory usage, therefore strongly limiting their application. As a solution, we present a distributed memory parallelization, focusing on the National Hydrological Model. Depending on the level of integration, we show that significant speedups can be obtained up to two orders of magnitude. As far as we know, this is the first reported integrated groundwater parallelization of an operational hydrological model used for national-scale integrated water management and policy making. The parallel model code and data are freely available.
KW - Distributed memory
KW - Groundwater
KW - Integrated modeling
KW - Netherlands Hydrological Instrument
KW - Numerical modeling
KW - Parallel computing
UR - http://www.scopus.com/inward/record.url?scp=85107551892&partnerID=8YFLogxK
U2 - 10.1016/j.envsoft.2021.105092
DO - 10.1016/j.envsoft.2021.105092
M3 - Article
AN - SCOPUS:85107551892
SN - 1364-8152
VL - 143
SP - 1
EP - 15
JO - Environmental Modelling and Software
JF - Environmental Modelling and Software
M1 - 105092
ER -