You might first just try running a simple MPI "hello" to verify the installation. I don't know if OF is threaded or not.
Sent from my iPad On Jan 17, 2012, at 5:22 AM, John Hearns <hear...@googlemail.com> wrote: > Andre, > you should not need the OpenMPI sources. > > Install the openmpi-devel package from the same source > (zypper install openmpi-devel if you have that science repository enabled) > This will give you the mpi.h file and other include files, libraries > and manual pages. > > That is a convention in Suse-style distros - the devel package > contains the stuf you need to 'develop' > > On 17/01/2012, Theiner, Andre <andre.thei...@hp.com> wrote: >> Hi Devendra, >> thanks for your interesting answer, up to now I expected to get a fully >> operational openmpi installation package >> by installing openmpi from the “science” repository ( >> http://download.opensuse.org/repositories/science/openSUSE_11.3” ). >> To compile your script I need to have the openmpi sources which I do not >> have at present, I will try to get them. >> How do I compile and build using multiple processors? >> Is there a special flag which tells the compiler to care for multiple CPUs? >> >> Andre >> >> >> From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On >> Behalf Of devendra rai >> Sent: Montag, 16. Januar 2012 13:25 >> To: Open MPI Users >> Subject: Re: [OMPI users] mpirun hangs when used on more than 2 CPUs >> >> Hello Andre, >> >> It may be possible that your openmpi does not support threaded MPI-calls (if >> these are happening). I had a similar problem, and it was traced to this >> cause. If you installed your openmpi from available repositories, chances >> are that you do not have thread-support. >> >> Here's a small script that you can use to determine whether or not you have >> thread support: >> >> #include <mpi.h> >> #include <iostream> >> int main(int argc, char **argv) >> { >> int myrank; >> int desired_thread_support = MPI_THREAD_MULTIPLE; >> int provided_thread_support; >> >> MPI_Init_thread(&argc, &argv, desired_thread_support, >> &provided_thread_support); >> >> /* check if the thread support has been provided */ >> if (provided_thread_support!=desired_thread_support) >> { >> std::cout << "MPI thread support not available! Aborted. " << >> std::endl; >> exit(-1); >> } >> MPI_Finalize(); >> return 0; >> } >> >> Compile and build as usual, using multiple processors. >> >> Maybe this helps. If you do discover that you do not have support available, >> you will need to rebuild MPI with --enable-mpi-threads=yes flag. >> >> HTH. >> >> >> Devendra >> >> ________________________________ >> From: "Theiner, Andre" <andre.thei...@hp.com> >> To: "us...@open-mpi.org" <us...@open-mpi.org> >> Sent: Monday, 16 January 2012, 11:55 >> Subject: [OMPI users] mpirun hangs when used on more than 2 CPUs >> >> >> Hi everyone, >> may I have your help on a strange problem? >> High performance computing is new to me and I have not much idea about >> OpenMPI and OpenFoam (OF) which uses the “mpirun” command. >> I have to support the OF application in my company and have been trying to >> find the problem since about 1 week. >> The versions are openmpi-1.3.2 and OF 2.0.1 which are running on openSUSE >> 11.3 x86_64. >> The computer is brand new, has 96 GB RAM, 12 CPUs and was installed with >> Linux some weeks ago. >> I installed OF 2.0.1 according to the vendors instructions at >> http://www.openfoam.org/archive/2.0.1/download/suse.php. >> >> Here the problem: >> The experienced user tested the OF with a test case out of one of the >> vendors tutorials. >> He only used the computing power of his local machine “caelde04” , no other >> computers were accessed by mpirun. >> >> He found no problem when testing in single “processor mode” but in >> “multiprocessor mode” his calculations hangs when he distributes >> the calculations to more than 2 CPUs. The OF vendor thinks this is an >> OpenMPI problem somehow and that is why I am trying to get >> help from this forum here. >> I attached 2 files, one is the “decomposeParDict” which resides in the >> “system” subdirectory of his test case and the other is the log file >> from the “decomposePar” command and the mpirun command “mpirun -np 9 >> interFoam –parallel”. >> Do you have an idea where the problem is or how I can narrow it down? >> Thanks much for any help. >> >> Andre >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org<mailto:us...@open-mpi.org> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
