what's dummy Pstream for??
I tried compiling OF 2.1.0 on a cluster with its native MPI. The make system of OpenFoam is really puzzeling. And I was confused by the dummy Pstream.
I think dummy Pstream was designed for serial running. But why libOpenFoam.so is forced to be linked with dummy version libPstream.so ? How this libOpenFoam.so with the dummy Pstream code can do parallel running??
It's simple: the dummy Pstream acts as a place holder, sort-of of a stub. This way it's possible to have a single OpenFOAM installation that can easily work with any number of MPI libraries/toolboxes as you want to, without having to recompile the whole OpenFOAM source code.
For example, if you were conducting experiments to compare several MPI libraries, such as Open-MPI 1.4.3 and 1.5.3 vs MPICH2 1.4.1, you would then have the following folders in "$FOAM_LIBBIN":
For more about how wmake works: OpenFoam Installation in Redhat Enterprise linux 5 - post #22
For more about how the OpenFOAM works on the shell: Advanced tips for working with the OpenFOAM shell environment
Thank you !!
If only I read these a week ago. It took me so much time to make it.
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