Re: [ESPResSo] MPI issue

[Ulf Schiller]

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Hi Tristan,

Tristan Bereau wrote:
> Thanks for your answer.
> I looked at the config.log (attached). First, it looks like mpirun,
> mpicc, and mpich are recognized pretty much everywhere in the file.
> But looking carefully towards the end of the file (~line 1200), there is:
> MPI_FAKE_FALSE=''
> MPI_FAKE_TRUE='#'
> which doesn't look right to me at all (unless a '#' sign means a
'no'...?)!
> It's strange, because it did find all the relevant mpi files on my
computer.
> I tried reinstalling OpenMPI (1.2.3), but it still does the same problem.

Thanks for providing the config.log. It seems indeed that ESPResSo's
build system does not recognize the MPI environment correctly. As far as
 I know, not many of us have used ESPResSo with OpenMPI so far. On the
one hand, this means that it may take some time until your problem can
be fixed, on the other hand your reports are of great help to improve
ESPResSo.

> Is there some trick to solve that?

I'm not an expert in the build system so I can only make a guess: My
suspicion is that the dependency mode set by configure is not correct:
CC='mpicc'
CCDEPMODE='depmode=gcc3'
Can you try to configure ESPResSo again with
./configure CC=mpicc
and check whether the values of these variables change?
I had a similar problem recently which could be solved this way. I'm not
sure whether it'll solve your problem as well, but it's worth a try...

Many regards,
Ulf

- --
Ulf D. Schiller   *   Room 1.404   *   Phone +49 6131 379-481
Max Planck Institute for Polymer Research
Theory Group
D-55128 Mainz, Germany                   50° 0' N, 008° 16' E
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