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mfem / mfem

Lightweight, general, scalable C++ library for finite element methods
http://mfem.org
BSD 3-Clause "New" or "Revised" License
1.67k stars 486 forks source link

Debug the source code #262

Closed BEMfreshman closed 7 years ago

BEMfreshman commented 7 years ago

Hi, I am a new comer and student who want to learn FEA programming. I consider that MFEM is lightweight FEM library and want to debug the example code to find out how it works.Of course, it will extremely help me understand the FE formulation,boundary condition and so on. Can anybody give me some advice to achieve this goal? PS: My OS is arch linux 64 bit. Thanks.

BEMfreshman commented 7 years ago

Now, I have compiled library and get libmfem.a. But I want to debug the MFEM source code directly without any library archive.

jakubcerveny commented 7 years ago

Hi,

First you need to have some idea about the basic theory, there's many great books on that (e.g., Claes Johnson: Numerical Solution of Partial Differential Equations by the Finite Element Method; or, Pavel Solin: Partial Differential Equations and the Finite Element Method).

Then you can compile the serial debug version of MFEM (make debug) and run Example 1 (examples/ex1.cpp) in a debugger like gdb (I personally prefer cgdb or even the gdb front-end inside QtCreator).

Good luck!

Jakub

On Sun, Aug 27, 2017 at 12:51 PM, BEMfreshman notifications@github.com wrote:

Now, I have compiled library and get libmfem.a. But I want to debug the MFEM source code directly without any library archive.

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BEMfreshman commented 7 years ago

Thanks for your reply. I have tried and it works well. I think your advice and solution will help me a lot. Thanks again.