Re: [OMPI users] xcode and ompi

[Brian W. Barrett]

On Sun, 21 Oct 2007, Tony Sheh wrote:


I'm working in xcode and i'm trying to build an application that
links against the OMPI libraries. So far i've included the following
files in the build:

libmpi.dylib
libopen-pal.dylib
libopen-rte.dylib

and the errors i get are

Undefined symbols:
 all the MPI functions you can think of..



Can you copy the link line that XCode invoked as well as the actual error 
message?  It's likely that the link line is just incorrect for some 
reason.  Another option is to have XCode just invoke the MPI wrapper 
compilers instead of trying to figure out all the right magic.  There's an 
unsupported FAQ on doing this on our web page:


  http://www.open-mpi.org/faq/?category=osx#xcode

Good luck,

Brian

Re: [OMPI users] xcode and ompi

[Jeff Squyres]

Those are the three libraries that are typically required.  I don't  
know anything about xcode, so I don't know if there's any other  
secret sauce that you need to use.


Warner -- can you shed any light here?

To verify your Open MPI installation, you might want to try compiling  
a trivial MPI application outside of xcode with the simple "mpicc"  
wrapper compiler, such as:


mpicc mpi_hello_world.c -o mpi_hello_world

You can also see what underlying command mpicc is invoking with:

mpicc mpi_hello_world.c -o mpi_hello_world --showme

But I will pretty much guarantee that if you have mixed multiple MPI  
implementations (LAM and Open MPI) in the same directory tree, things  
won't work.  It would be best to fully uninstall one (e.g., LAM) and  
then re-install the other (e.g., Open MPI).  If you've lost the build  
directory for LAM, you can download a new source tarball from www.lam- 
mpi.org.





On Oct 21, 2007, at 11:13 PM, Tony Sheh wrote:


Hi all,

I'm working in xcode and i'm trying to build an application that
links against the OMPI libraries. So far i've included the following
files in the build:

libmpi.dylib
libopen-pal.dylib
libopen-rte.dylib

and the errors i get are

Undefined symbols:
 all the MPI functions you can think of..


as well as a warning: "suggest use of -bind_at_load, as lazy binding
may result in errors or different symbols being used

I've compiled and linked to the static libraries (using ./configure --
enable-static) and i get the same errors. Also, i previously the
latest version of lam/mpi installed. I didn't uninstall it since i
lost the original directory as well as the make and configure
settings. If that is the conflict then any information about how to
resolve it would be good.

Thanks!
Tony
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--
Jeff Squyres
Cisco Systems

[OMPI users] xcode and ompi

[Tony Sheh]

Hi all,

I'm working in xcode and i'm trying to build an application that  
links against the OMPI libraries. So far i've included the following  
files in the build:


libmpi.dylib
libopen-pal.dylib
libopen-rte.dylib

and the errors i get are

Undefined symbols:
 all the MPI functions you can think of..


as well as a warning: "suggest use of -bind_at_load, as lazy binding  
may result in errors or different symbols being used


I've compiled and linked to the static libraries (using ./configure -- 
enable-static) and i get the same errors. Also, i previously the  
latest version of lam/mpi installed. I didn't uninstall it since i  
lost the original directory as well as the make and configure  
settings. If that is the conflict then any information about how to  
resolve it would be good.


Thanks!
Tony