On Thu, Dec 3, 2015 at 10:08 AM, Roy Stogner <royst...@ices.utexas.edu> wrote:
> > On Thu, 3 Dec 2015, li....@siat.ac.cn wrote: > > > I have a question on the default ordering of multi-variables in a > > system, e.g. u_x, u_y and p in Navier-Stokes equaiton. Is the > > default ordering of unknowns (1) node by node with each node has > > all variables; or (2) field by field with each field (like, u_x) > > has all node's values ? > > The outermost ordering is always processor-by-processor: e.g. degree > of freedom indices owned by MPI rank 0 will always have lower numbers > than dof indices owned by rank 1. > > The default ordering within each processor's dofs is field by field. > > If you want node-by-node ordering (still within each processor's dofs) > then you can pass the argument "--node_major_dofs" on the command > line. > If all variables are the same type, then I thought "node major dofs" is the default. I thought this was changed when Ben added the blocked-dofs optimization. I could be mis-remembering though? David ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
