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 installing it, 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 13 2010 _________________________________________________________________ The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4