plaes.org

For the most of the past week, I have been working on variable separation of PDE's and yesterday I sent my merge request. Currently two mostly-used strategies - additive and multiplicative separation are implemented and tested on simpler equations like Laplace's.

So, what's next? :)

I am currently prototyping a pdesolve() which can handle first-order equations (and also any hyperbolic PDEs) using characteristic methods. Once this is finished, I can start adding the variable separation into pdesolve() and after this has been done, I can move on to implment support for boundary and initial conditions.

While testing mesa 7.4_rc2 I ran into a weird build error where some file was requiring a stubs-32.h file. So today, when I was trying out X11 overlay I had already b0rked my system and I did not feel like going back I decided to look into this issue.

Turns out that the culprit was /usr/bin/makedepend which did not know that it was running a 64-bit machine, setting the default __WORDSIZE to 32-bits and well.. causing the include of stubs-32.h instead of the 64-bit one. With gcc it works fine as it defines both __x86_64 and __x86_64__ and therefore right stubs file is included.

You can fetch the fix from here and I can continue fixing the mess left over from libxcb's library removal.

[EDIT]: It seems that the real cause of these build failures were caused by depend files that came with the tarball.

Yesterday I bit the bullet and managed to add a simple solver for the separable variables PDE case into Sympy.

I have also set up a git repository viewer and my two patches can be viewed on the pde-upstream branch.