[CIG-CS] MPI references in Pythia, trying to install pylith-0.8

[Leif Strand]

Rowena,

Pythia's 'configure' script expects compiler flags for the MPI* 
variables; e.g.,

    MPIINCLUDES="-I/opt/mpich/include"
    MPILIBS="-L/opt/mpich/lib -lmpich"

However, I recommend that you avoid this problem altogether by 
configuring Pythia without MPI. PyLith does not need Pythia's MPI 
modules. So configure Pythia like this:

    ./configure --without-mpi

In fact, I highly recommend this, as this isn't the only Pythia-MPI road 
block you are likely to encounter. (The Pythia 'configure' script has 
some issues with MPICH2... or, more accurately, MPICH2 has some 
C++/preprocessor-related issues which 'configure' does not automatically 
work-around.)

--Leif


Rowena Lohman wrote:

> Hi all,
>
> It did turn out that my petsc problems had to do with a dead 
> libgfortran link that is now fixed, thanks for helping me find that.
>
> Next problem:  It isn't clear to me exactly how MPILIBS and 
> MPIINCLUDES should be set for petsc.  I started by setting them to the 
> /lib and /bin directories that petsc created during mpich installation:
>
> MPILIBS=/u/vento0/rlohman/pylith-0.8/petsc-dev/externalpackages/mpich2-1.0.4p1/lib
> MPIINCLUDES=/u/vento0/rlohman/pylith-0.8/petsc-dev/externalpackages/mpich2-1.0.4p1/bin
>
> However, when I do this, pythia dies during ./configure with the 
> following problem:
>
> configure:19916: g++ -o conftest -g -O2   conftest.cc 
> /u/vento0/rlohman/pylith-0.8/petsc-dev/externalpackages/mpich2-1.0.4p1/lib  
> >&5
> /u/vento0/rlohman/pylith-0.8/petsc-dev/externalpackages/mpich2-1.0.4p1 
> /lib: file not recognized: Is a directory
>
> To me this looks like it expects MPILIBS to be a file, not a 
> directory.  However, I've tried replacing it with the name of the 
> files in lib/ and it still dies at that point, looking for MPI_Init.  
> I can send my whole config.log file if someone tells me what I should 
> set for MPILIBS.
>
> Thanks again,
> Rowena
>
>
> -- 
> -----------------------------------
> Rowena Lohman
> MS 300-233
> Jet Propulsion Lab
> Pasadena, CA 91109
> 818-354-4253
> -----------------------------------
>
>------------------------------------------------------------------------
>
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