Thanks Mark, Figured out that I had both pointing to the same location....removed MPICH2 by hand, as you mentioned.
Installed OMPI and it works finally (via console thou). Altho I gotta use sudo before the mpicc or mpiexec, or I get nothing (plus I gotta be in the dir where I installed OMPI to use the commands...not sure if this is right or if I gotta make changes somewhere...I would like to call these commands like I do for grep and other commands ). Now the next obstacle is to find out how to let Xcode to see the MPI libraries; I can run programs via terminal, but if I try to run them in Xcode I get an error because it cannot find MPI.h; even if i do a #import <mpi.h> I suspect that it should work but I am probably missing something....how are you able to use MPI on Xcode? Gotta change some build settings? Thanks! On Nov 12, 2012, at 7:29 AM, Mark Bolstad wrote: > You may want to see if you have MacPorts installed. Typically (but not > always), /opt/local is from a MacPorts installation. If it is then it's very > easy to remove mpich and install openmpi. > > To check for MacPorts, see if /opt/local/bin/port exists. Then, > > sudo port uninstall --follow-dependencies mpich2 > sudo port install openmpi > > FYI, I'm using OpenMPI 1.6 with XCode 4.5.2 on 10.8.2 and it works fine. > > Mark > > On Fri, Nov 9, 2012 at 6:55 PM, shiny knight <theshinykni...@me.com> wrote: > Thanks Reuti for the sample. > > I have the latest Xcode available on the Apple dev center; Xcode 4 probably? > > I think that the reason why nothing happens is because the code runs via > MPICH2; tried to launch mpicc with the -echo flag and i see in the output > > -I/opt/local/include/mpich2 -L/opt/local/lib -lpmpich -lmpich -lopa -lmpl > -lpthread > > which makes me think that i am using MPICH2; I just need to figure out how to > remove it now...found a dir in opt/local/include that is called mpich2 but I > am not sure if is enough to just delete that dir. > > > When I have installed OpenMPI I followed the instructions on this site: > > https://sites.google.com/site/dwhipp/tutorials/installing-open-mpi-on-mac-os-x > > While for MPICH2 I've followed this one: > > http://www.mpitutorial.com/installing-mpich2/ > > Most likely I've put them on top of each other and messed up both > > > > On Nov 9, 2012, at 2:32 AM, Reuti wrote: > > > Am 09.11.2012 um 08:47 schrieb shiny knight: > > > >> Thanks for your replies. > >> > >> I use Snow Leopard, running ompi_info returns an error (command not found). > > > > I'm on this version too. Which version of Xcode do you use - "Xcode 3.2.6 > > and iOS SDK 4.3"? Attached is a small file which I can compile with the > > mentioned command. > > > > $ mpicc demo.m -o demo -O0 -ObjC -framework Foundation -framework > > CoreLocation > > $ mpiexec -np 2 ./demo > > > > > >> I was looking for installers and I remember that I have installed MPICH2 > >> if I recall correctly (I didn't knew about openMPI until today), so I have > >> mpicc installed. > >> > >> Should I remove MPICH2 and install OpenMPI? > > > > Yes. > > > > Different MPI implementations have to be installed in different locations > > and the paths set accordingly. Also note, that an application compiled with > > Open MPI can't be started with MPICH2 `mpiexec` and vice versa. Well, yes - > > it could be started but it will only run in serial in all instances like > > you can start any application with `mpiexec`. As `mpicc` is only a wrapper > > to provide additonal paths arguments to -I/-L/-l, all usual options apply. > > In principle MPI applications can also be compiled by a plain gcc, but then > > you have to take care of all the necessary libraries on your own. > > > > -- Reuti > > > > <demo.m>_______________________________________________ > > users mailing list > > 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 > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
