Compiling, building, hacking...

This blog post is an effort to document the search for solutions for loading dynamically linked libraries and initializing their objects in the desired order. With me, it all started with this bug report: http://bugs.openfoam.org/view.php?id=236

Basically, OpenFOAM initializes debug values right after loading all of the necessary libraries. These debug values are read from the global controlDict files (see $WM_PROJECT_DIR/etc/controlDict in your own OpenFOAM installation, or at the git repo)...

This post is gathers information about OpenFOAM 2.0.x build times, using the gcc version that comes with Ubuntu 10.10, namely 4.4.5.

_____________ This was initially posted here: http://www.openfoam.com/mantisbt/view.php?id=256 _____________

Since I was curious about using N+1 processes, I've built OpenFOAM 3 times on my machine that has 8GB of DDR2 800MHz and one AMD 1055T X6, using Ubuntu 10.10 with its original gcc version:

• 1st build with 6 processes;
• 2nd

...

If you don't know what I mean by build-gcc, read this first: Automated scripts for building gcc 4.4.x and 4.5.x for using with OpenFOAM 1.7 series


Sometime ago, a problem was detected when using one of my build-gcc scripts (see OpenFoam 1.7.0 on RHEL 4.6 post #3) about no valid libc.so being found during the build procedure. This was later fixed by adding the proper lib folder path to LD_LIBRARY_PATH (read post #9 on that thread).

Nonetheless,...