HPC Introduction: Difference between revisions

TUFLOW HPC is an explicit finite volume solution which differs to TUFLOW Classic which is an implicit finite difference equation. Time derivatives of cell averaged water depth, u-velocity and v-velocity are computed on a cell-by-cell basis and the model evolved using an explicit ODE solver. Calculation of the cell based derivatives are highly independent of each other making it possible to run this solution scheme across multiple processors or GPU cards. Parallelisation is done by breaking up the model into vertical ribbons. Each ribbon of the model is run on a different processor (or GPU card) with boundary information shared between processors at each timestep as illustrated in the image below.<br>

 

 

'''Mass Conservation and Timestep''' <br>