Okay. How can I set `rewrite_function_mesh` and `flush_output` from Python?
--Nico On Mon, Jun 3, 2013 at 3:32 PM, Garth N. Wells <[email protected]> wrote: > On 3 June 2013 14:17, Nico Schlömer <[email protected]> wrote: > > Hi all, > > > > since recently, I'm doing time-dependent computations where > Navier--Stokes, > > the heat equation, and Maxwell's equations are coupled such that the > > solution is composed of (u, p, theta, E, B), all of which are living on > the > > same mesh. When storing the files, I use a separate file for each > quantity > > and I eventually get a directory full of > > > > velocity*.vtu > > pressure*.vtu > > temperature*.vtu > > magnetic*.vtu > > electric*.vtu > > > > The total amount of data is easily in the range of several GB. > > This becomes a bottle neck for storage and post-processing, so I was > > thinking about ways to reduce this. > > > > One thing that's immediately obvious is the fact that the mesh is stored > > anew for each variable in each time step. When looking at the files, mesh > > data accounts for about 70% of the data per file. > > I now ask myself the question what a sensible backwards-compatible API > would > > look like to storing several arrays in one file. On the Python side, I > could > > imagine admitting a list of functions to the writer, > > > > File('myfile.pvd') << ([u, p, theta, E, B], t) > > > > (with an assertion that the functions indeed to live on the same mesh). > I'm > > not sure how (if?) this would translate to C++ though. > > > > Has anyone else ever run into similar issues or thought about this? > > > > Use XDMF. It addresses a number of these issues, and can eventually be > made (with feedback) to address all of them. > > Garth > > > Cheers, > > Nico > > > > _______________________________________________ > > fenics mailing list > > [email protected] > > http://fenicsproject.org/mailman/listinfo/fenics > > >
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