From: Jeff Squyres <jsquyres@cisco.com>
Subject: Re: [OMPI users] errors returned from openmpi-1.2.7 source code
To: "Open MPI Users" <users@open-mpi.org>
Date: Wednesday, September 17, 2008, 11:21 AM

You shouldn't need to add any -I's or -L's or -l's for Open MPI.
 Just  
use mpic++ and mpicc (per my first note, notice that "mpicc" (lower  
case) is the C compiler -- mpiCC is a synonym for the C++ compiler --  
this could be your problem).  Those wrappers add all the compiler /  
linker flags that you need.


On Sep 17, 2008, at 2:16 PM, Shafagh Jafer wrote:

> The openmpi is installed in the following path: /opt/openmpi/1.2.7  
> so should i replce what you told me about /usr/lib with /opt/openmpi/ 
> 1.2.7 ??
>
> --- On Wed, 9/17/08, Jeff Squyres <jsquyres@cisco.com>
 wrote:
> From: Jeff Squyres <jsquyres@cisco.com>
> Subject: Re: [OMPI users] errors returned from openmpi-1.2.7 source  
> code
> To: "Open MPI Users" <users@open-mpi.org>
> Date: Wednesday, September 17, 2008, 9:22 AM
>
> I don't quite understand the format of this file, but at first glance,
> you shouldn't need the following lines:
>
> export LIBMPI = -lmpi
>
> export MPIDIR=/nfs/sjafer/phd/openMPI/installed
> export LDFLAGS +=-L$(MPIDIR)/lib
> export INCLUDES_CPP += -I$(MPIDIR)/include
>
> It also doesn't seem like the last 2 arguments of this line are a good
> idea (the linker should automatically put /usr/lib and /lib in your
> search path, if appropriate):
>
> export LDFLAGS+=-L. -L$/usr/lib -L$/lib
>
> I also notice:
>
> export CPP=mpic++
> export CC=mpiCC
>
> I think you
 want "mpicc" for CC (note the lower case) -- mpiCC
is the
> C
> ++ compiler (mpic++ and mpiCC are synonyms).
>
> This might solve your problem.
>
>
>
> On Sep 15, 2008, at 4:56 PM, Shafagh Jafer wrote:
>
> > i am sending you my simulator's Makefile.common which points to
> > openmpi, please take a look at it. Thanks a lot.
> >
> > --- On Mon, 9/15/08, Jeff Squyres <jsquyres@cisco.com> wrote:
> > From: Jeff Squyres <jsquyres@cisco.com>
> > Subject: Re: [OMPI users] errors returned from openmpi-1.2.7 source
> > code
> > To: "Open MPI Users" <users@open-mpi.org>
> > Date: Monday, September 15, 2008, 11:21 AM
> >
> > On Sep 14, 2008, at 1:24 PM, Shafagh Jafer wrote:
> >
> > > I installed openmpi-1.2.7 and tested the hello_c and ring_c  
> examples
> >
 > on single and multiple node and worked fine. However, when I use
> > > openmpi with my simulator (by replacing the old mpich path with 

> the
> > > new openmpi ) I get many errors reported from "/openMPI/
> > > openmpi-1.2.7/include/openmpi/ompi/mpi/cxx/*.h" . Please
see the
> > > following snap shots:
> > >
> >
> > It's not clear exactly what you did here.  Did you just replace
> > MPICH's "mpiCC" with OMPI's "mpiCC"? 
FWIW,
> this is
> > almost always the
> > easiest way to compile MPI applications: use that
implementation's
> > "wrapper" compiler (I'm assuming you have a C++ code in
this
> > case).
> >
> > These errors should not normally happen; they look kinda like
you're
> > somehow inadvertently mixing Open MPI and MPICH.
> >
> > --
> >
 Jeff Squyres
> > Cisco Systems
> >
> > _______________________________________________
> > users mailing list
> > users@open-mpi.org
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
> >
<Makefile.common>_______________________________________________
> > users mailing list
> > users@open-mpi.org
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
> -- 
> Jeff Squyres
> Cisco Systems
>
> _______________________________________________
> users mailing list
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>
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-- 
Jeff Squyres
Cisco
 Systems

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