The flood inundation and hazard maps have been derived for 10-, 50- and 200-year return periods of design rainfall, discharge and tide to identify the best possible flood-reducing hydraulic scenario. Following that, a three-way linked flood model has been developed in the MIKE FLOOD platform, considering river, stormwater, overland flow and tidal influence to generate flood inundation and subsequently hazard maps for various inland hydraulic scenarios, by incorporating different feasible cross-sections and lining materials. First, the study addresses the issue of data scarcity by adapting alternate robust techniques to estimate design rainfall, tidal elevation and discharge, the key inputs for a flood model. Results for other GPU cards are available in the benchmark report.This study proposes a novel comprehensive hydrodynamic flood modelling framework over Mithi river watershed in Mumbai, India, a coastal urban area, to reduce the inundation extent by incorporation of different inland hydraulic scenarios. * The speed-up of more than 100 has been achieved using a two core HP workstation with Intel® Core™ i3-2120 Processor (2 core, 3.30 GHZ), 8 GB of RAM and a GeForce GTX TITAN card. Simulation speed (speed-up factor) for a high resolution Mediterranean model with and without 4 GPU cards (MIKE 21 FM running single precision, first order scheme). Available at no extra cost to all owners of corporate licences of MIKE 21 or MIKE FLOOD with valid software maintenance agreement (SMA).Significant increase in speed at a very competitive price.MIKE 21 GPU uses the latest graphical processing units - hardware that is otherwise typically used for speeding up computer games.Additionally, the largest speed-up factors kick in when you really need them – for large model meshes of one million elements or more.įor more detailed information about performance, please view the benchmark reports.

Going from one to four GPU cards yields another factor of up to three – leading to a total speed-up in the range of 300. We also support the use of multiple GPUs on Windows PCs.ĭepending on the model setup and the type of GPU, the speed-up can be a factor 100 or more compared to running the same simulation on a single processor CPU*. The use of graphical processing units (GPUs) is a very efficient and cost-effective way to speed up simulations and as of release 2014 we have made it possible to use GPUs with our MIKE 21 FM HD software and with the Flexible Mesh solver with MIKE FLOOD software.

This is highly relevant both in research environments and in professional engineering departments. Improvements in calculation speed make it possible to execute larger models or to undertake more simulations within a given time frame.

A key issue in numerical modelling is the computational speed.

Mike 21 flood