FMA Challenge 2: Difference between revisions

The FMA Challenge Wiki'smodels provideare example TUFLOW models submitted by BMT WBM for the Floodplain Management Association 2-Dimensional Model Challenges, 2012. <br>

This Wiki page assumes an intermediate to advanced user level. If you haven't already completed FMA Challenge 1, please see thisthe <u>[[FMA Challenge 1 (1D-2D linked)|FMA Challenge 1]]</u> page.

In thisThis challenge, model investigates a tidally influenced floodplain and riverine system will be explored along the Californian Coast. More information is available in the document '''"FMA Challenge 2 Documention.TUFLOW.docx"''' that is provided withing the ZIP file download.

AAll seriesthree ofchallenge fullymodels functionalare examplepresented modelsas havea beenfully developedfunctional examples, allowing you to review the model setup, run the model and review results developing your understanding of:.<br>

Notably, aA key investigation of this FMA Challange is the performance of the differing 2D solution methods (CPU and GPU) in representing measured flood levels during a historical event.

Data for this model is provided viain ZIPa compressedvariety fileof availabledifferent [http://www.tuflow.com/Tuflow%20Tutorial%20Models.aspxGIS compatible onformats. Download the TUFLOWdataset Downloadsthat Page]matches underthe 'CurrentGIS Demosoftware Models'.you are using:

*General 2D modelling - <u>[[Tutorial Module01Tutorial_M01|Tutorial Module 1]] </u>

*2D topography modification - <u>[[Tutorial Module03Tutorial_M02|Tutorial Module 32]]</u><br><br>

It is at your discretion which GIS package, text editor and method of model simulation to use (batch mode or within the text editor). All files required to setup and run the models are available within the download package. You have the choice of running with shape file or mif for usage in ArcGIS/QGIS or Mapinfo respectively.<br> <br>

=== Note on Runtimes ===

TheThere is a series of batch files provided with the demo model havethat give the 10m,choice of running only the 15m and 30m grid resolution simulations turned onresolutions byor defaultall forthree. your testing purposes. Due to the size of the model and large number of cells for the CPU only 10m case, it may take up to 24hrs of 'real time' to run on your computer. If you don't want to run the 10 m gridcase then dojust run either 'run_all_001.bat' or '_run_all_CPU_001.bat'. Further details are provided in the following:Readme.txt within the runs directory.

Current benchmarching of runtimes for the CPU vs GPU respectively has found that the GPU simulations are typically 20-30 times faster than the CPU for this demo model. For models with a much larger number of cells >10 million the benefit of the GPU increases dramatically with CPU/GPU runtime speed increases over 100. Further detail on the hardware benchmarking toconducted on FMA Demo Model 2 is provided [[Hardware_Benchmarking | here]].