Two subsequent presentations on the 13th UnTRIM Workshop 2016 with the same title Efficient river modelling applying subgrid technology (UnTRIM2), the first part concerning concept and grids, presented by Regina Patzwahl, and the second part concerning results, presented by Jacek A. Jankowski. Continue reading
Jacek A. Jankowski. Developments concerning parallel computing with the Telemac System, 10th Telemac User Club, Chamrousse, 9-10 October 2003.
BAW is one of the a few Telemac users applying the code on high performance computers (HPC), presently all of them parallel, in their sites in Hamburg (SGI Origin 3000), Karlsruhe (SGI Origin 2000) and also by DWD in Offenbach (IBM RS/6000 SP). The presentation addresses the specific methodology, issues and developments concerning HPC: Continue reading
Jacek A. Jankowski. Coupling Telemac and Sisyphe internally, 9th Telemac User Club, Karlsruhe, 17-18 October 2002.
One of the disadvantages of the Telemac system is the traditional public library software structure based on of freely linkable Fortran functions with open parameter lists, being a legacy from the original Fortran-77 development in 1980-years. Fortran-90 modules are presently applied only for providing global variables of the system components, which is an incomplete solution. This works well with vertical programs-libraries hierarchy, but when a horizontal coupling between libraries or programs is necessary, awkward and unnecessary problems appear, alone due to the overlapping names of variables and the input/output conflicts.
The presentation proposes the encapsulation of the Telemac system principal components in the form of proper Fortran-90 modules providing correct module interfaces. Continue reading