The ABINIT Users Mailing List ( CLOSED )

[Yann Pouillon <yann.pouillon@ehu.es>]

Hi,

Le Wed, 26 Sep 2007 11:04:03 +0900, Paul Fons <paul-fons@aist.go.jp> a écrit :

> I suspect that you need to provide a path to the mpi environment and  
> that is all, e.g.
> 
> ./configure --with-mpi-prefix=/opt/openmpi --enable-64bit-flags
> 
> works just fine in my case.  Try adding the correct prefix (note that  
> there are lib, bin directories under /opt/mpi)

Paul is perfectly right.

MPI installation is not standardised at all, thus there is no way for the
build system to guess which version of MPI you want to use. On many machines,
in particular clusters, there are indeed different versions of MPI built with
different optimisations that can be found in directories with long and
unusual names. That is precisely why you need to use the "--with-mpi-prefix"
option: telling the build system where to find what it needs.

Please note that the build system expects to find all the required files in
subdirectories of <prefix>:

 * libraries in <prefix>/lib
 * compilers and runners in <prefix>/bin
 * include files in <prefix>/include

I do my best to provide you with the simplest possible procedure. Yet the MPI
detection module of the configure script has still a few bugs. I'm working on
a substantial improvement by restructuring completely this part for ABINIT
5.5. A better output is part of it. The changes to the user interface should
remain minimalistic, though.

Thank you in advance for your understanding, and stay tuned!

Best regards,

Yann.

-- 
Yann Pouillon               European Theoretical Spectroscopy Facility (ETSF)
Tel: (+34) 943 01 83 94     Centro Joxe Mari Korta, Avenida de Tolosa, 72
Fax: (+34) 943 01 83 90     20018 Donostia-San Sebastián (Gipuzkoa)
Web: http://www.etsf.es/    España