Bundling OpenMPI may be problematic and give users more trouble than you
save them as OpenMPI is very configurable and usually works best when
adapted to the available communication hardware. You might consider
asking users to install an MPI library and then install your software.
For desktop/laptop linux users, MPI is usually in a package repository,
so can be installed without too much pain. Some programs, for example
Gromacs use a dummy MPI library,
https://gitlab.com/gromacs/gromacs/-/tree/main/src/external/thread_mpi
On 8/10/22 17:18, Jeff Squyres (jsquyres) via users wrote:
Let's keep the users list in the CC so that the discussion is
google-able for others who may have the same questions.
It looks like the error is described in the first line: it can't find
libnl-3.so.200 (provided by the distro / not part of Open MPI), which is
needed by libopen-rte.so.40 (part of Open MPI).
For example, if you build+install Open MPI on a machine with
libnl-3.so.200 and then transplant that Open MPI install to an
equivalent machine that does not have libnl-3.so.200, you'll see this
kind of error.
You should also be able to see this by running "ldd" on
libopen-rte.so.40 -- it should show "not found" for libnl-3.so.200 if
that library is actually unavailable.
--
Jeff Squyres
jsquy...@cisco.com
------------------------------------------------------------------------
*From:* Sebastian Gutierrez <sebasgu...@gmail.com>
*Sent:* Wednesday, August 10, 2022 3:26 AM
*To:* Jeff Squyres (jsquyres) <jsquy...@cisco.com>
*Subject:* Re: [OMPI users] Problem with OpenMPI as Third pary library
Hello,
I tried what is explained there (changed OPAL_PREFIX to the new location
and changed the rpath of my executable), I even added the flags
--with-hwloc and the other one because when I tried to run my program it
said that it did not find the libraries. Now I got a new error that says
something like this
imagen.png
Do you know why is this happening?
Thanks,
Sebastian
On Tue, Aug 9, 2022, 16:04 Jeff Squyres (jsquyres) <jsquy...@cisco.com
<mailto:jsquy...@cisco.com>> wrote:
I can't see the image that you sent; it seems to be broken.
But I think you're asking about this:
https://www.open-mpi.org/faq/?category=building#installdirs
<https://www.open-mpi.org/faq/?category=building#installdirs>
--
Jeff Squyres
jsquy...@cisco.com <mailto:jsquy...@cisco.com>
------------------------------------------------------------------------
*From:* users <users-boun...@lists.open-mpi.org
<mailto:users-boun...@lists.open-mpi.org>> on behalf of Sebastian
Gutierrez via users <users@lists.open-mpi.org
<mailto:users@lists.open-mpi.org>>
*Sent:* Tuesday, August 9, 2022 9:52 AM
*To:* users@lists.open-mpi.org <mailto:users@lists.open-mpi.org>
<users@lists.open-mpi.org <mailto:users@lists.open-mpi.org>>
*Cc:* Sebastian Gutierrez <sebasgu...@gmail.com
<mailto:sebasgu...@gmail.com>>
*Subject:* [OMPI users] Problem with OpenMPI as Third pary library
Good morning Open-MPI organization,
__ __
I have been trying to distribute your program as third party library
in my CMake Project. Because I do not want to my Linux users to have
to install OpenMPI by their own. I just want them to use my final
product that uses OPenMPI dependencies. When I execute make install
of my Project in my own machine, it works perfectly but the
problem appears when I move the executable to another machine that
does not have installed OpenMPI (see image attached); as you can see
when I run my executable appear this error message trying to find a
file of yours but in an absolute path in which OpenMPI was
installed, in fact this file does exist but not in that path, I
would like to make everything relative to my Project origin folder.
I used the the CMake macro ExternalProject, so that OpenMPI will be
installed inside my project as an external dependency. Here is a
piece of code of the config that I used to install OpenMPI
ExternalProject_Add(____
openmpi_external____
__ __
URL
https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-4.1.2.tar.gz
<https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-4.1.2.tar.gz>____
URL_MD5 2f86dc37b7a00b96ca964637ee68826e____
__ __
BUILD_IN_SOURCE 1____
SOURCE_DIR ${CMAKE_BINARY_DIR}/toyapp/external/openmpi____
__ __
CONFIGURE_COMMAND____
${CMAKE_BINARY_DIR}/toyapp/external/openmpi/configure____
--prefix=${CMAKE_BINARY_DIR}/toyapp/external/openmpi____
__ __
BUILD_COMMAND____
make all____
__ __
INSTALL_COMMAND ____
make install____
)____
I honestly have no idea to solve this. I wrote this email in hopes
that you kindly help me out with this.
I am looking forward to your answer.
Best regards,
Sebastian
