Hi, all:    

I need to install boost library (/home/myname/boost_2010_6_8/boost_1_43_0).
http://www.boost.org/doc/libs/1_43_0/more/getting_started/index.html

It has MPI library :

http://www.boost.org/doc/libs/1_42_0/doc/html/mpi.html

After installingit, I compile some c++ program with calling for boost.MPI  class, the compiler cannot find the header files in the program even though I have included the boost path in the compile command.

example:
------------------------------------------------------------------------
#include </boost/mpi/environment.hpp>
#include <boost/mpi/communicator.hpp>
#include <iostream>
namespace mpi = boost::mpi;

int main(int argc, char* argv[])
{
  mpi::environment env(argc, argv);
  mpi::communicator world;
  std::cout << "I am process " << world.rank() << " of " << world.size()
            << "." << std::endl;
  return 0;
}
--------------------------------------------------------------------------

 mpic++ -o testp2p test_p2p.cpp I/home/myname/boost_2010_6_8/boost_1_43_0
g++: I/home/myname/boost_2010_6_8/boost_1_43_0: No such file or directory
test_p2p.cpp:7:38: error: /boost/mpi/environment.hpp: No such file or directory
test_p2p.cpp:11:38: error: boost/mpi/communicator.hpp: No such file or directory

Actually, I have installed these header files in the directory.


I find a possible reason:
 When I built the package, it tells me that :

-----------------------------------------------------------------
-bash-3.2$ ./bjam

Building the Boost C++ Libraries.


warning: Building Boost.Regex with the optional Unicode/ICU support disabled.
note: Please refer to the Boost.Regex documentation for more information
note: this is a strictly optional feature.
warning: Graph library does not contain MPI-based parallel components.
note: to enable them, add "using mpi ;" to your user-config.jam
warning: skipping optional Message Passing Interface (MPI) library.
note: to enable MPI support, add "using mpi ;" to user-config.jam.
note: to suppress this message, pass "--without-mpi" to bjam.
note: otherwise, you can safely ignore this message.

Component configuration:

    - date_time                : building
    - filesystem               : building
    - graph                    : building
    - graph_parallel           : building
    - iostreams                : building
    - math                     : building
    - mpi                      : building
    - program_options          : building
    - python                   : building
    - random                   : building
    - regex                    : building
    - serialization            : building
    - signals                  : building
    - system                   : building
    - test                     : building
    - thread                   : building
    - wave                     : building

...patience...
...patience...
...patience...
...found 6754 targets...


The Boost C++ Libraries were successfully built!

The following directory should be added to compiler include paths:

    /lustre/jxding/boost_2010_6_8/boost_1_43_0

The following directory should be added to linker library paths:

    /lustre/jxding/boost_2010_6_8/boost_1_43_0/stage/lib
------------------------------------------------------------------------------------------

It seems that I need to specify I need to use mpi for the bjam builder.

But, I have added  "using mpi ;" and  "using mpi : /opt/openmpi-gnu/bin/mpic++ ;" in the file
/home/myname/boost_2010_6_8/boost_1_43_0/user-config.jam.

I have also added it in the file
/home/myname/boost_2010_6_8/boost_1_43_0/tools/build/v2/user-config.jam.

But, I still got the same error. It seems that there is something wrong with the package ?
or the compiler cannot understand the "using mpi ;" in the user-config.jam ?

Any help is appreciated.


Jack

June 11  2010

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