[OMPI users] mpicc -showme:compile output (possible bug report)
Am using CMake build system along with an OpenMPI based project. CMake is using mpicc's -showme:compile and -showme:link output to build compile and link flags; however, it is expecting -showme:compile to dump at least some "-I" flags, that it is further parsing in order to build the list of include directories. As OpenMPI's mpicc (OpenMPI compiled from source on a Slackware Linux 12.0 installation) is not printing alike flags, CMake is unable to utilize OpenMPI. So, I'm wondering would it be possible to change OpenMPI to dump the path to the directory where mpi.h installed in an "-I" flag, when mpicc -showme:compile command run? Thanks.
Re: [OMPI users] mpicc -showme:compile output (possible bug report)
What exactly does mpicc --showme:compile output? mpicc (and friends) typically do not output -I only for "special" directories, such as /usr/include, because adding -I/usr/include may subvert the compiler's normal include directory search order. On Apr 16, 2008, at 7:57 AM, Crni Gorac wrote: Am using CMake build system along with an OpenMPI based project. CMake is using mpicc's -showme:compile and -showme:link output to build compile and link flags; however, it is expecting -showme:compile to dump at least some "-I" flags, that it is further parsing in order to build the list of include directories. As OpenMPI's mpicc (OpenMPI compiled from source on a Slackware Linux 12.0 installation) is not printing alike flags, CMake is unable to utilize OpenMPI. So, I'm wondering would it be possible to change OpenMPI to dump the path to the directory where mpi.h installed in an "-I" flag, when mpicc -showme:compile command run? Thanks. ___ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres Cisco Systems
Re: [OMPI users] open mpi on smp
I think that in pure OpenMPI environment (without any resorce manager) you should be able to run applications like this: mpirun -np 2 mpi_executable or mpirun -np 4 -machinefile machines.list mpi_executable where machines.list contains a list of your computers identified by their host names. The former command should run the program locally on 2 processors/cores, the latter one on those specified in the list. Regards, Jozef On Tue, Apr 15, 2008 at 6:38 PM, Cally K wrote: > hi, am beginner in openmpi > > > could anyone tell me how do i run programs in open mpi on smp.. as in do I > have to do any changes in hostfile ... like in mpich -- I write > > server:2 > > how do I do it openmpi > > > ___ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
Re: [OMPI users] mpicc -showme:compile output (possible bug report)
On Wed, Apr 16, 2008 at 2:18 PM, Jeff Squyres wrote: > What exactly does mpicc --showme:compile output? > > mpicc (and friends) typically do not output -I only for "special" > directories, such as /usr/include, because adding -I/usr/include may > subvert the compiler's normal include directory search order. On my machine, "mpicc -showme:compile" outputs "-pthread" only. I guess CMake is modeling MPI recognizing after MPICH, and that "-I" flags appears in "mpicc -showme:compile" output there; tried to check that, but latest MPICH (1.0.7) won't even compile on my machine... In any case, I reported the issue to the CMake bug tracker too. Regards.
Re: [OMPI users] open mpi on smp
Cally: In the hostfile you add a "slots" line. For example on my dual opteron (single core) system, I have slots=2. This can be read about in more detail in the FAQ - I provide a link for this section below - you may need to scroll down to see the example hostfile at the end of the section. http://www.open-mpi.org/faq/?category=running#mpirun-scheduling Happy computing, Mark Kosmowski > Message: 1 > Date: Wed, 16 Apr 2008 14:32:58 +0200 > From: " Jozef K??er " > Subject: Re: [OMPI users] open mpi on smp > To: "Open MPI Users" > Message-ID: ><8803b3d0804160532t60d9e82embeb01b8389416...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > I think that in pure OpenMPI environment (without any resorce manager) you > should be able to run applications like this: > > mpirun -np 2 mpi_executable > or > mpirun -np 4 -machinefile machines.list mpi_executable > > where machines.list contains a list of your computers identified by their > host names. > The former command should run the program locally on 2 processors/cores, the > latter > one on those specified in the list. > > Regards, > Jozef > > On Tue, Apr 15, 2008 at 6:38 PM, Cally K wrote: > > > hi, am beginner in openmpi > > > > > > could anyone tell me how do i run programs in open mpi on smp.. as in do I > > have to do any changes in hostfile ... like in mpich -- I write > > > > server:2 > > > > how do I do it openmpi > > > > > > ___ > > users mailing list > > us...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/users > >
Re: [OMPI users] mpicc -showme:compile output (possible bug report)
On Apr 16, 2008, at 9:38 AM, Crni Gorac wrote: mpicc (and friends) typically do not output -I only for "special" directories, such as /usr/include, because adding -I/usr/include may subvert the compiler's normal include directory search order. On my machine, "mpicc -showme:compile" outputs "-pthread" only. This would seem to indicate that OMPI is specifically choosing not to display the -I/whatever flag, most likely because it would have been - I/usr/include (or similar). I guess CMake is modeling MPI recognizing after MPICH, and that "-I" flags appears in "mpicc -showme:compile" output there; tried to check that, but latest MPICH (1.0.7) won't even compile on my machine... In any case, I reported the issue to the CMake bug tracker too. Ok. If OMPI is installed with a prefix of /usr, I don't anticipate us changing this behavior -- this exception is specifically implemented to not subvert the normal compiler include directory search order. Note, too, that the same issue will occur with -L in the --showme:link line -- we don't display -L/usr/lib for the same reasons as described above. -- Jeff Squyres Cisco Systems
