On Thu, 20 Sep 2012, David Knezevic wrote: > In terms of renaming, some people using the RB code have been confused > by the "jacobian" and "residual" nomenclature, which isn't relevant when > you're assembling linear systems. How about "matrix" and "rhs" or > something instead?
Sure it's relevant: if you're solving "Ax - b = 0" then your Jacobian is A and at x=0 your residual is -b. If the RB code doesn't use those sign conventions (and assuming I can't talk you into changing its conventions) though, then we're worse than "isn't relevant", we're all the way to "is dangerously misleading". So I suppose we could use "matrix" and "rhs". I wish conventions for linear and nonlinear systems matched, though, even if it sometimes meant redundant multiply-by-negative-1 operations in one case or the other. I've often found it helpful in the long run to think of a linear system as a potentially-nonlinear system that just needs to try a little harder. --- Roy ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://ad.doubleclick.net/clk;258768047;13503038;j? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ Libmesh-devel mailing list Libmesh-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-devel
