Hi Ghobad, The error message means the OpenMPI wants to use cl.exe - the compiler from Microsoft Visual Studio.
Here http://www.open-mpi.org/software/ompi/v1.5/ms-windows.php is it stated: This is the first binary release for Windows, with basic MPI libraries and executables. The supported platforms are Windows XP, Windows Vista, Windows Server 2003/2008, and Windows 7 (including both 32 and 64 bit versions). The installers were configured with CMake 2.8.1 and compiled under Visual Studio 2010, and they support for C/C++ compilers of Visual Studio 2005, 2008 and 2010. So, to compile MPI programs you probably need one of this compilers to be installed. Best regards. - Dima. 2012/5/10 Ghobad Zarrinchian <gzarrin....@gmail.com>: > Hi all. I'm a new open-mpi user. I've downloaded the > OpenMPI_v1.5.5-1_win32.exe file to install open-mpi on my dual-core windows > 7 machine. I installed the file but now i can't compile my mpi programs. I > use command below (in command prompt window) to compile my 'test.cpp' > program: > >>> mpic++ -o test test.cpp > > but i get error as follows: > >>> The open mpi wrapper compiler was unable to find the specified compiler >>> cl.exe in your path. > Note that this compiler was either specified at configure time or in > one several possible environment variables. > > What is the problem? Is my compilation command right? Is there any remained > necessary steps to complete my open-mpi installation? > Is it necessary to specify some environment variables? > > Thanks in advanced. > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users